Santa Fe Pacific Gold Company and Subsidiaries, By and Through Its Successor in Interest, Newmont USA Limited v. Commissioner , 130 T.C. No. 17 ( 2008 )


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    130 T.C. No. 17
    UNITED STATES TAX COURT
    SANTA FE PACIFIC GOLD COMPANY AND SUBSIDIARIES, BY AND THROUGH
    ITS SUCCESSOR IN INTEREST, NEWMONT USA LIMITED, Petitioner v.
    COMMISSIONER OF INTERNAL REVENUE, Respondent
    Docket No. 22956-06.               Filed June 25, 2008.
    P used the percentage depletion method to
    calculate depletion deductions for its mine, M, which
    was placed in service on or before Dec. 31, 1989. P
    was subject to the alternative minimum tax but did not
    make adjusted current earnings (ACE) adjustments under
    sec. 56(g)(4)(C)(i) or (F)(ii), I.R.C, for depletion
    for M even though M’s adjusted basis had been fully
    depleted for cost depletion purposes. When calculating
    the sec. 57(a)(1), I.R.C., preference for M, P included
    development costs capitalized under sec. 56(a)(2),
    I.R.C., in M’s adjusted basis.
    Held: Sec. 56(g)(4)(F)(i), I.R.C., does not
    preclude the sec. 56(g)(4)(C)(i), I.R.C., ACE
    adjustment from applying to depletion.
    Held, further, unamortized sec. 56(a)(2), I.R.C.,
    costs are not included in M’s adjusted basis for
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    purposes of calculating sec. 56(g)(4)(C)(i), I.R.C.,
    ACE adjustments for depletion.
    Held, further, because of R’s   concession,
    unamortized sec. 56(a)(2), I.R.C.,   costs may be
    included in M’s adjusted basis for   purposes of
    calculating sec. 57(a)(1), I.R.C.,   preferences for the
    years at issue.
    Held, further, to the extent that the same amounts
    are not also treated as sec. 57(a)(1), I.R.C.,
    preferences, P is required to make a sec.
    56(g)(4)(C)(i), I.R.C., ACE adjustment for depletion
    for M.
    David D. Aughtry, Arnold B. Sidman, and William O.
    Grimsinger, for petitioner.
    Curt M. Rubin and Jennifer S. McGinty, for respondent.
    OPINION
    GOEKE, Judge:    This case is before the Court on the parties’
    cross-motions for partial summary judgment.    After concessions,1
    the primary issue for decision, for purposes of adjusting
    petitioner’s alternative minimum taxable income (AMTI) under the
    alternative minimum tax (AMT), is whether section 56(g)(4)(C)(i)2
    1
    Respondent concedes the portions of the adjusted current
    earnings (ACE) adjustments set forth in the notice of deficiency
    attributable to petitioner’s Twin Creeks Mines made pursuant to
    sec. 56(g)(4) in the amounts of $3,659,182, $12,676,115,
    $22,655,817, and $6,574,253 for the years ending Dec. 31, 1994,
    Dec. 31, 1995, Dec. 31, 1996, and May 5, 1997, respectively.
    2
    Unless otherwise indicated, all section references are to
    (continued...)
    - 3 -
    limits the depletion deduction for a mine placed in service on or
    before December 31, 1989, specifically petitioner’s Mesquite
    Mine, to depletion deductions allowed in computing earnings and
    profits, or whether section 56(g)(4)(F) alone governs all
    adjusted current earnings (ACE) adjustments relating to depletion
    regardless of when the property is placed in service.   We must
    also decide whether unamortized mine development costs that must
    be capitalized and amortized under section 56(a)(2) (unamortized
    section 56(a)(2) costs) are included in the adjusted basis of
    depletable property, specifically the Mesquite Mine, for purposes
    of determining (1) the amount of section 57(a)(1) preferences,
    and/or (2) the amount of section 56(g)(4)(C)(i) ACE adjustments
    for depletion.
    We hold that unamortized section 56(a)(2) costs are not
    included in the adjusted basis of depletable property for
    purposes of determining the amount of section 56(g)(4)(C)(i) ACE
    adjustments for depletion.   In addition, because respondent
    conceded that unamortized section 56(a)(2) costs may be included
    in the adjusted basis of depletable property for purposes of
    determining section 57(a)(1) preferences, petitioner is not
    liable for any increases in its AMT liability that might
    2
    (...continued)
    the Internal Revenue Code (Code) in effect for the years at
    issue, and all Rule references are to the Tax Court Rules of
    Practice and Procedure.
    - 4 -
    otherwise arise from our holding on this issue.    We hold further
    that section 56(g)(4)(C)(i) applies to depletion of the Mesquite
    Mine to the extent that the amount by which the depletion
    deductions attributable to the Mesquite Mine exceeded the mine’s
    adjusted basis during the years at issue is not also treated as a
    section 57(a)(1) preference.
    Background
    The record establishes or the parties do not dispute the
    following facts.
    Petitioner is the successor in interest to the Santa Fe
    Pacific Gold Corp. and an alternate agent for the Santa Fe
    Pacific Gold Corp. & Subs. Consolidated Group.    At the time it
    filed its petition, petitioner’s principal place of business was
    Denver, Colorado.
    Petitioner owned several gold mines during the taxable years
    ending December 31, 1994, 1995, and 1996, and May 5, 1997 (the
    years at issue), that were placed in service on or before
    December 31, 1989.   Petitioner’s Mesquite Mine was placed in
    service in September 1981, and petitioner’s two Twin Creeks Mines
    were placed in service in December 1987 and March 1989.
    Petitioner calculated its depletion deductions using the
    percentage depletion method under section 613, as opposed to the
    cost depletion method under section 612, for regular tax purposes
    for all of its mines during the years at issue.    Petitioner was
    - 5 -
    subject to the AMT during the years at issue, and it included
    section 57(a)(1) preferences for depletion when calculating its
    AMTI.    When calculating its ACE adjustment, petitioner did not
    make any adjustments under section 56(g)(4)(C)(i) for mines that
    were placed in service on or before December 31, 1989.
    Petitioner incurred development costs under section 616(a) for
    its mines, which it capitalized and amortized over a 10-year
    period as required by section 56(a)(2).
    On November 13, 2006, respondent issued a notice of
    deficiency to petitioner for the years at issue.       Respondent made
    the following changes to petitioner’s ACE adjustments for
    depletion:3
    Year   Reported ACE       Adjusted ACE
    1994    $6,119,535         $12,676,873
    1995    18,517,208          42,115,880
    1996     3,004,144          44,790,687
    1997     2,378,500          13,738,815
    Petitioner timely petitioned the Court to review
    respondent’s determinations.   The parties filed cross-motions for
    partial summary judgment on the issue of whether section
    56(g)(4)(C)(i) requires ACE adjustments for depletion for mines
    placed in service on or before December 31, 1989.      Because one of
    petitioner’s arguments is that section 57(a)(1) precludes the
    3
    Respondent also made other adjustments in the notices of
    deficiency that the Court will address in a separate opinion.
    - 6 -
    application of section 56(g)(4)(C)(i) to depletion, we must also
    determine whether sections 57(a)(1) and 56(g)(4)(C)(i) perfectly
    overlap when applied to depletion.        This in turn depends on
    whether unamortized section 56(a)(2) costs are included in the
    adjusted basis of depletable property for purposes of determining
    section 57(a)(1) preferences and/or section 56(g)(4)(C)(i) ACE
    adjustments.   Respondent concedes that petitioner correctly
    reported the portions of the ACE adjustments attributable to the
    Twin Creeks Mines.      The Twin Creeks Mines were not subject to the
    section 56(g)(4)(C)(i) ACE adjustment because their adjusted
    bases were greater than the depletion deductions attributable to
    them.   See infra pp. 8-9.     The parties filed memoranda in support
    of their respective motions and in opposition to the opposing
    party’s motion, and the Court held a hearing on these issues in
    Washington, D.C.
    Discussion
    I.   Summary Judgment
    Summary judgment is intended to expedite litigation and
    avoid unnecessary and expensive trials.        Fla. Peach Corp. v.
    Commissioner, 
    90 T.C. 678
    , 681 (1988).        The Court may grant
    summary judgment when there is no genuine issue of any material
    fact and a decision may be rendered as a matter of law.        Rule
    121(b); Sundstrand v. Commissioner, 
    98 T.C. 518
    , 520 (1992),
    affd. 
    17 F.3d 965
     (7th Cir. 1994).        The parties agree that there
    - 7 -
    are no questions regarding any material facts related to the
    issue before the Court and that the issue is a pure question of
    law that should be resolved by summary judgment.
    II.   Statutory Background
    Congress enacted the AMT as a part of the Tax Reform Act of
    1986 (TRA), Pub. L. 99-514, 
    100 Stat. 2085
    , in order to prevent
    taxpayers with substantial economic income from avoiding
    significant tax liability by using exclusions, deductions, and
    credits.   See Snap-Drape, Inc. v Commissioner, 
    105 T.C. 16
    , 21
    (1995), affd. 
    98 F.3d 194
     (5th Cir. 1996).   The AMT equals the
    excess of the tentative minimum tax over the regular tax for the
    year.   Sec. 55(a).   For corporations, the tentative minimum tax
    is 20 percent of so much of AMTI as exceeds the exemption amount,
    reduced by the AMT foreign tax credit for the year.   Sec.
    55(b)(1)(B).    AMTI is the taxable income of the taxpayer for the
    year determined with the adjustments provided in sections 56 and
    58 and increased by the amount of items of tax preference in
    section 57.    Sec. 55(b)(2).
    Section 56(g)(1) provides that the AMTI of any corporation
    for the taxable year shall be increased by 75 percent of the
    excess of the corporation’s ACE over the corporation’s
    preadjustment AMTI, which is the taxpayer’s AMTI determined
    without regard to section 56(g) or the alternative tax net
    operating loss deduction.
    - 8 -
    A.    Section 56(g)(4)(C)(i)
    Section 56(g)(4)(C)(i) provides that in determining ACE, no
    deduction is allowed for any item that would not be deductible
    for any taxable year for purposes of computing earnings and
    profits.    Section 56(g)(5)(A) provides that the term “earnings
    and profits” means earnings and profits computed for purposes of
    subchapter C.    Section 1.312-6(c)(1), Income Tax Regs., provides:
    In computing the earnings and profits for any period
    beginning after February 28, 1913, the only depletion
    or depreciation deductions to be considered are those
    based on (i) cost or other basis, if the depletable or
    depreciable asset was acquired subsequent to February
    28, 1913 * * *. Thus, discovery or percentage
    depletion under all revenue acts for mines and oil and
    gas wells is not to be taken into consideration in
    computing the earnings and profits of a corporation.
    [Emphasis added.]
    Sections 611 through 614 govern deductions allowable for
    depletion of natural resources.     Section 613 allows taxpayers
    deductions for depletion that are based on a percentage of gross
    income, regardless of the adjusted basis of the property, if the
    deductions are larger than they would be under the cost depletion
    method.    Section 612 governs cost depletion, an alternate method
    of calculating depletion deductions using the adjusted basis of
    the property provided in section 1011.     See also sec. 1.611-
    2(b)(2), Income Tax Regs.
    When the AMT applies, section 56(g)(4)(C)(i) offsets the
    permanent benefit of the percentage depletion method by requiring
    an ACE adjustment if a taxpayer’s depletion deduction exceeds the
    - 9 -
    adjusted basis of the property.   The section 56(g)(4)(C)(i) ACE
    adjustment equals the excess, if any, of the taxpayer’s current
    depletion deduction for the property for regular tax purposes
    over the aggregate of the deductions allowable for the current
    year and for future years when calculating earnings and profits.
    Section 1.56(g)-1(d)(1), Income Tax Regs., provides:
    no deduction is allowed in computing adjusted current
    earnings for any items that are not taken into account
    in determining earnings and profits for any taxable
    year * * *. Thus, to the extent an item is, has been,
    or will be deducted for purposes of determining
    earnings and profits, it does not increase adjusted
    current earnings in the taxable year in which it is
    deducted for purposes of determining pre-adjustment
    alternative minimum taxable income. * * * [Emphasis
    added.]
    Because a taxpayer is never allowed depletion deductions in
    excess of the adjusted basis of the property under the cost
    depletion method, section 56(g)(4)(C)(i) requires an ACE
    adjustment of the amount by which the depletion deduction for the
    property exceeds the adjusted basis of the property.   However, to
    the extent that the taxpayer has an adjusted basis in its
    property, section 56(g)(4)(C)(i) does not require an ACE
    adjustment even if the taxpayer deducts an amount for depletion
    that exceeds what it would be allowed under the cost depletion
    method because the excess deduction will be allowed as a
    deduction under the cost depletion method in a future year.
    - 10 -
    B.   Section 56(g)(4)(F)(i)
    For a taxpayer subject to the AMT owning mines placed in
    service after December 31, 1989, section 56(g)(4)(F)(i) offsets
    both the temporary and the permanent benefits of the percentage
    depletion method:
    (F) Depletion.--
    (i) In general.--The allowance for depletion with
    respect to any property placed in service in a taxable year
    beginning after December 31, 1989, shall be cost depletion
    under section 611.
    This requires an ACE adjustment for the difference between a
    taxpayer’s depletion deduction and the amount that would be
    allowed if the taxpayer calculated its depletion deduction using
    the cost depletion method.
    To the extent that both section 56(g)(4)(C)(i) and (F)(i)
    would otherwise require ACE adjustments (as would be the case if
    a mine was placed in service after December 31, 1989, and its
    adjusted basis is less than the depletion deduction), the
    taxpayer must make an upward ACE adjustment only under section
    56(g)(4)(F)(i).   See infra pp. 18-19.   When a mine’s adjusted
    basis is fully depleted, the ACE adjustments under section
    56(g)(4)(C)(i) and (F)(i) will both equal the deduction allowed
    under the percentage depletion method.   Because the adjustment
    under section 56(g)(4)(F)(i) will offset the benefit of deducting
    - 11 -
    an amount that would not be deductible for purposes of computing
    earnings and profits, section 56(g)(4)(C)(i) does not apply.4
    C.   Section 57(a)(1)
    Section 57(a)(1) is also designed to offset the permanent
    benefit of the percentage depletion method.   It includes as a tax
    preference item that must be added to AMTI under section
    55(b)(2)(B):
    (1) Depletion.--With respect to each property (as
    defined in section 614), the excess of the deduction
    for depletion allowable under section 611 for the
    taxable year over the adjusted basis of the property at
    the end of the taxable year (determined without regard
    to the depletion deduction for the taxable year). * * *
    Section 614(a) defines “property” as “each separate interest
    owned by the taxpayer in each mineral deposit in each separate
    tract or parcel of land.”
    Section 1.57-1(h)(3), Income Tax Regs., which further
    explains section 57(a)(1), provides:
    (3) Adjusted basis. For the determination of the
    adjusted basis of the property at the end of the
    taxable year see section 1016 and the regulations
    thereunder.
    Therefore, to the extent that a taxpayer’s depletion
    deduction exceeds the adjusted basis of the property determined
    under section 1016, the taxpayer has a preference item under
    4
    Examples 1-4 in the appendix to this Opinion illustrate
    the operation of sec. 56(g)(4)(C)(i) and (F)(i) and the views of
    the parties and the Court on whether sec. 56(g)(4)(C)(i) applies
    to depletion.
    - 12 -
    section 57(a)(1) that will be added to its AMTI under section
    55(b)(2).
    D.   Unamortized Section 56(a)(2) Costs
    Section 616(a) allows a taxpayer to currently deduct mine
    development costs.   A taxpayer’s election under section 616(b) to
    deduct those costs ratably according to units of ore sold may
    defer a portion of the deduction.   However, section 291(b)
    provides that, for corporations, the amount that would otherwise
    be deductible under section 616(a) must be reduced by 30 percent,
    but that the amount not allowable as a current deduction may be
    amortized and deducted ratably over a 60-month period.   As an
    alternative, section 59(e) provides that a taxpayer may elect for
    regular tax purposes to amortize the expenditures that would
    otherwise be allowed as a deduction under section 616(a) over 10
    years without regard to section 291.
    Section 56(a)(2) provides that if a taxpayer is subject to
    the AMT, when calculating AMTI the taxpayer must amortize over 10
    years any mine development costs that it would otherwise have
    deducted currently under section 616(a), without regard to
    section 291.   However, if a taxpayer makes an election under
    section 59(e), section 56(a)(2) does not apply.
    A key issue in this case is whether unamortized section
    56(a)(2) costs are included in the adjusted basis of depletable
    - 13 -
    property when calculating section 56(g)(4)(C)(i) ACE adjustments
    and section 57(a)(1) preferences.
    III.   The Positions of the Parties
    Petitioner argues that section 56(g)(4)(C)(i) does not apply
    to depletion because ACE adjustments for depletion may be made
    only under section 56(g)(4)(F)(i).      Because section
    56(g)(4)(F)(i) does not apply to mines placed in service on or
    before December 31, 1989, petitioner argues that no ACE
    adjustment should be made for depletion for mines placed in
    service on or before December 31, 1989.      In support of this
    argument, petitioner asserts that:      (1) Congress created a “grace
    period” to protect mines placed in service on or before December
    31, 1989, from all ACE adjustments for depletion; (2) the rules
    of statutory construction show that section 56(g)(4)(C)(i) does
    not apply to depletion; (3) the legislative history of section
    56(g)(4) confirms that section 56(g)(4)(C)(i) does not apply to
    depletion; (4) the statutory scheme of section 56 makes sense
    only if section 56(g)(4)(C)(i) does not apply to depletion; and
    (5) applying section 56(g)(4)(C)(i) to depletion would duplicate
    the adjustment for tax preferences under sections 55(b)(2) and
    57(a)(1).
    Respondent argues that on its face section 56(g)(4)(C)(i)
    applies to both depletable and other property regardless of when
    it is placed in service, while section 56(g)(4)(F)(i) applies
    - 14 -
    only to depletable property placed in service after December 31,
    1989.   While subparagraphs (C)(i) and (F)(i) overlap in some
    cases, they are not in conflict or ambiguous.   Therefore,
    respondent argues that there is no need to resort to rules of
    statutory construction or legislative history; but even if we
    were to use these tools, they would not alter the plain meaning
    of the statute.
    Respondent further argues that section 56(g)(4)(C)(i) does
    not merely duplicate the adjustment for tax preferences in
    sections 55(b)(2) and 57(a)(1) because sections 56(g)(4)(C)(i)
    and 57(a)(1) treat unamortized section 56(a)(2) costs
    differently.
    IV.   The “Grace Period” Argument
    Petitioner first argues that when Congress enacted the AMT,
    it included a grace period that protects mines placed in service
    on or before December 31, 1989, from any ACE adjustments
    resulting from depletion deductions.   Petitioner claims that this
    intention is found in section 56(g)(4)(F)(i), quoted above.
    Petitioner argues that because the limitation “after December 31,
    1989,” also applies to six other specifically identified items in
    section 56(g)(4), Congress must have intended for this “grace
    period” to be an integral part of the AMT scheme as a whole.
    Therefore, petitioner believes that section 56(g)(4)(C)(i) does
    not apply to depletable property placed in service on or before
    - 15 -
    December 31, 1989, either.   Petitioner argues that if we do not
    extend the “grace period” to section 56(g)(4)(C)(i), we will
    negate the protection for depletable property placed in service
    on or before December 31, 1989, that Congress intended when it
    limited the application of section 56(g)(4)(F)(i) to property
    placed in service after that date.
    We agree that by limiting the reach of section
    56(g)(4)(F)(i) Congress provided some protection for taxpayers
    owning depletable property placed in service on or before
    December 31, 1989.   Section 613(a) allows a taxpayer to calculate
    depletion deductions using the percentage depletion method for
    regular tax purposes if that method results in a greater
    deduction than a deduction calculated under the cost depletion
    method.   However, for property placed in service after December
    31, 1989, section 56(g)(4)(F)(i) offsets the benefit of the
    percentage depletion method when the AMT applies.     Unlike section
    56(g)(4)(C)(i), section 56(g)(4)(F)(i) requires an ACE adjustment
    in any year for which the taxpayer’s percentage depletion
    deduction exceeds the depletion deduction calculated under the
    cost depletion method, even if the percentage depletion deduction
    is less than the adjusted basis of the property.    Therefore,
    section 56(g)(4)(F)(i) may require an ACE adjustment in
    situations where section 56(g)(4)(C)(i) would not apply.    Because
    the limitation in section 56(g)(4)(F)(i) protects property placed
    - 16 -
    in service on or before December 31, 1989, from the ACE
    adjustment under section 56(g)(4)(F)(i), taxpayers owning such
    property do not need to make ACE adjustments for depletion unless
    they have already fully depleted the adjusted basis of the
    property.
    While section 56(g)(4)(F)(i) allows a taxpayer to enjoy the
    temporary benefits of the percentage depletion method if it owns
    property placed in service on or before December 31, 1989, we do
    not see any indication that Congress intended this protection to
    extend to the permanent benefits of the percentage depletion
    method once the taxpayer has fully depleted the adjusted basis of
    the property.    Congress included in section 56(g)(4) both
    subparagraph (C)(i) and subparagraph (G), which was redesignated
    in 1990 but is materially the same as current subparagraph (F),
    in TRA.5    If Congress had wished to limit the application of
    5
    Tax Reform Act of 1986, Pub. L. 99-514, sec. 701(a), 
    100 Stat. 2320
    ; Omnibus Budget Reconciliation Act of 1990, Pub. L.
    101-508, sec. 11301(b), 
    104 Stat. 1388
    -449. The original sec.
    56(g)(4)(G) provided:
    (G) Depletion.–-The allowances for depletion with
    respect to any property placed in service in a taxable
    year beginning after 1989, shall be determined under
    whichever of the following methods yields deductions
    with a smaller present value:
    (i) cost depletion determined under section 611,
    or
    (ii) the method used for book purposes.
    - 17 -
    section 56(g)(4)(C)(i) to property placed in service after
    December 31, 1989, it could have included a limitation similar to
    the one found in section 56(g)(4)(F)(i).    In the absence of clear
    evidence that Congress intended to protect depletable property
    placed in service on or before December 31, 1989, from all ACE
    adjustments related to depletion, we will not restrict the
    application of section 56(g)(4)(C)(i) to property placed in
    service after December 31, 1989.
    V.   Statutory Construction
    Petitioner also argues that the rules of statutory
    construction show that section 56(g)(4)(C)(i) does not apply to
    depletion.    Petitioner supports its argument with three theories,
    which we address in turn.
    A.   No Provision Should Be Superfluous
    First, petitioner argues that courts must attempt to
    interpret statutory provisions so as not to render any other
    provisions in the same enactment superfluous.    See Freytag v.
    Commissioner, 
    501 U.S. 868
    , 877 (1991).    Petitioner argues that
    applying section 56(g)(4)(C)(i) to depletion renders the
    limitation of section 56(g)(4)(F)(i) to mines placed in service
    after December 31, 1989, superfluous.
    As discussed above, subparagraphs (C)(i) and (F)(i) do serve
    different functions.    While applying section 56(g)(4)(C)(i) to
    depletion renders the protection in section 56(g)(4)(F)(i)
    - 18 -
    superfluous for the owner of property that has fully depleted the
    adjusted basis of the property for cost depletion purposes, the
    limitation on the application of section 56(g)(4)(F)(i) is of
    significant benefit for taxpayers with property placed in service
    on or before December 31, 1989, that have not fully depleted the
    property’s adjusted basis.   Petitioner enjoyed this benefit with
    respect to its Twin Creeks Mines.   See supra note 1.     Therefore,
    applying section 56(g)(4)(C)(i) to depletable property placed in
    service on or before December 31, 1989, does not render the
    limitation in section 56(g)(4)(F)(i) superfluous.
    B.   The Particular Is Not Included in the General
    Petitioner next argues that section 56(g)(4)(C)(i) does not
    apply to depletion because it is a general provision that
    includes what is already included in a more particular provision,
    section 56(g)(4)(F)(i).    In United States v. Chase, 
    135 U.S. 255
    ,
    260 (1890), the Supreme Court stated:
    where there is, in the same statute, a particular
    enactment, and also a general one, which, in its most
    comprehensive sense, would include what is embraced in
    the former, the particular enactment must be operative,
    and the general enactment must be taken to affect only
    such cases within its general language as are not
    within the provisions of the particular enactment. * * *
    While respondent agrees with this theory, he disagrees that
    it applies in this case.   Section 56(g)(4)(F)(i) is the
    “particular enactment” that deals specifically with depletion,
    but it applies only to property placed in service after December
    - 19 -
    31, 1989.    In the case of a taxpayer with property placed in
    service after December 31, 1989, whose depletion deduction
    exceeds the adjusted basis of the property for cost depletion
    purposes, petitioner is correct that subparagraphs (C)(i) and
    (F)(i) would both require the taxpayer to make the same ACE
    adjustment to the extent that the depletion deduction exceeds the
    adjusted basis of the property.    Respondent concedes that in such
    situations only the particular provision, section 56(g)(4)(F)(i),
    applies.    However, section 56(g)(4)(F)(i) does not apply to
    property placed in service on or before December 31, 1989.
    Therefore, only the general provision, section 56(g)(4)(C)(i),
    applies to such property, and there is no overlap between the
    particular and the general.    Because the Mesquite Mine was placed
    in service on or before December 31, 1989, it is subject only to
    the adjustment in section 56(g)(4)(C)(i).
    C.    Ambiguities Must Be Resolved Against the Drafter
    Petitioner next argues that ambiguous statutes must be
    resolved against the drafter, in this case the Government.
    However, this canon of statutory construction applies only where
    statutes are ambiguous.    Chickasaw Nation v. United States, 
    208 F.3d 871
    , 880 (10th Cir. 2000), affd. 
    534 U.S. 84
     (2001); see
    also White v. United States, 
    305 U.S. 281
    , 292 (1938).    As
    discussed above, section 56(g)(4)(C)(i) applies to all property
    regardless of when it was placed in service, and it offsets the
    - 20 -
    permanent benefit of the percentage depletion method and other
    deductions that are not allowed when calculating earnings and
    profits.   Section 56(g)(4)(F)(i) applies only to depletable
    property that is placed in service after December 31, 1989, and
    it offsets the temporary and permanent benefits of the percentage
    depletion method.   We decline to read ambiguity into a statute
    that has only one meaning on its face.
    VI.   Legislative History
    Petitioner also argues that the legislative history of
    section 56(g)(4) clarifies any remaining ambiguities and confirms
    that section 56(g)(4)(C)(i) does not apply to depletion.
    Generally, the Court looks to legislative history only if the
    statute is unclear.   Blum v. Stenson, 
    465 U.S. 886
    , 896 (1984);
    Woodral v. Commissioner, 
    112 T.C. 19
    , 22 (1999).   However, we do
    not find section 56(g)(4) unclear.
    Furthermore, the legislative history of section 56(g)(4)
    does not alter our understanding of the statute.   The House
    conference report for TRA explains that some adjustments will be
    made to ACE according to how those items are treated when
    calculating earnings and profits, and then goes on to say:
    “Additionally, adjusted current earnings requires different
    treatment of certain specifically listed items.”   H. Conf. Rept.
    99-841 (Vol. II), at II-275 (1986), 1986-3 C.B. (Vol. 4), 1, 275.
    - 21 -
    We agree that depletion is specifically listed in section
    56(g)(4)(F)(i) and is therefore entitled to “different
    treatment”.    However, it does not necessarily follow that the
    general provisions in section 56(g)(4)(C)(i) do not apply to
    depletable property that is outside the scope of section
    56(g)(4)(F)(i).
    VII.    The Statutory Scheme of Section 56
    Petitioner next argues that applying section 56(g)(4)(C)(i)
    to depletion conflicts with the statutory scheme of section 56
    because it:    (1) Requires section 56(g)(4)(C)(i) to be read in
    isolation; (2) conflicts with the regulations; (3) is
    inconsistent with section 56(g)(4)(F)(i); and (4) is inconsistent
    with respondent’s ACE worksheets.
    Petitioner argues that respondent’s position, that section
    56(g)(4)(C)(i) applies to depletion, is plausible only if section
    56(g)(4)(C)(i) is read in isolation; and if we are to read
    individual paragraphs in isolation, then section 56(g)(5)(B)
    eliminates all section 56(g)(4) adjustments.
    We agree that phrases must be construed in the light of the
    overall purpose and structure of the whole statutory scheme.
    Dole v. United Steelworkers of Am., 
    494 U.S. 26
    , 35 (1990);
    Woodral v. Commissioner, supra at 22.    However, we disagree that
    respondent’s position is plausible only if section 56(g)(4)(C)(i)
    is read in isolation.    Read by itself, section 56(g)(4)(C)(i)
    - 22 -
    applies to all property regardless of when it is placed in
    service and offsets the permanent benefit of the percentage
    depletion method and other deductions that are not allowed in any
    year when computing earnings and profits.     Read in the context of
    section 56 as a whole, it applies only to depletion if a taxpayer
    owns depletable property with an adjusted basis smaller than the
    amount of the taxpayer’s depletion deduction and the property is
    not subject to section 56(g)(4)(F)(i); i.e., was placed in
    service on or before December 31, 1989.   While section
    56(g)(4)(F)(i) may limit its application, section 56(g)(4)(C)(i)
    does not conflict with the rest of section 56 unless we adopt
    petitioner’s position that section 56(g)(4)(F)(i) is the only
    section that governs ACE adjustments for depletion.    We decline
    to create a conflict where there is none on the face of the
    statute.
    Furthermore, contrary to petitioner’s argument, section
    56(g)(5)(B) does not eliminate all section 56(g)(4) adjustments.
    Section 56(g)(5)(B) provides:
    (5) Other definitions.–-For purposes of paragraph (4)--
    *    *       *         *       *        *       *
    (B) Treatment of alternative minimum taxable
    income.–-The treatment of any item for purposes of
    computing alternative minimum taxable income shall be
    determined without regard to this subsection.
    - 23 -
    While we agree that section 56(g)(5)(B) cannot be read in
    isolation without causing some confusion, it is clear from the
    statute as a whole that paragraph (5)(B) simply means that items
    used in making ACE adjustments should not be included in
    preadjustment AMTI as well.   Otherwise, ACE would always equal
    preadjustment AMTI, and section 56(g)(1) would be meaningless.
    Petitioner also argues that the structure of the regulations
    indicates that depletion is treated separately from other
    adjustments that are based on earnings and profits.   Section
    1.56(g)-1(d)(3), Income Tax Regs., contains a partial list of
    items not deductible in computing earnings and profits that does
    not mention depletion, and section 1.56(g)-1(j), Income Tax
    Regs., separately addresses depletion.   Petitioner argues that
    this means that depletion is never subject to the general
    earnings and profits rule.    However, the list in section 1.56(g)-
    1(d)(3), Income Tax Regs., is clearly a “partial list”.    Section
    1.56(g)-1(d)(3), Income Tax Regs., provides:
    Items described in paragraph (d)(1) of this section
    [referring to items not deductible in computing
    earnings and profits] are not taken into account in
    computing earnings and profits (and thus are not
    deductible in computing adjusted current earnings) even
    if they are not identified in this paragraph (d)(3).
    * * *
    Therefore, it does not prove that there cannot be an ACE
    adjustment related to depletion under the general earnings and
    profits rule, particularly because the regulations under section
    - 24 -
    312 specifically include deductions under the percentage
    depletion method as an item that is not allowable as a deduction
    when calculating earnings and profits.   Sec. 1.312-6(c)(1),
    Income Tax Regs.   Furthermore, the specific regulation that
    governs depletion, section 1.56(g)-1(j), Income Tax Regs.,
    applies only to property placed in service after December 31,
    1989.
    While noting that implications drawn from subsequent
    legislation provide a hazardous basis for divining the intent of
    an earlier Congress, petitioner next argues that the
    parenthetical in section 56(g)(4)(F)(ii), which was added in 1992
    by the Energy Policy Act of 1992, Pub. L. 102-486, sec.
    1915(a)(2), 
    106 Stat. 3022
    , confirms that section 56(g)(4)(C)(i)
    does not apply to depletion.   Section 56(g)(4)(F)(ii) provides:
    (ii) Exception for independent oil and gas
    producers and royalty owners.--In the case of any
    taxable year beginning after December 31, 1992, clause
    (i) (and subparagraph (C)(i)) shall not apply to any
    deduction for depletion computed in accordance with
    section 613A(c). [Emphasis added.]
    Petitioner argues that the use of the parenthetical “(and
    subparagraph (C)(i))” indicates that the information inside the
    parentheses is redundant.   Therefore, the fact that Congress
    chose to state in parentheses that section 56(g)(4)(C)(i) does
    not apply to independent oil and gas producers means that section
    56(g)(4)(C)(i) would not have applied to those taxpayers in any
    event because section 56(g)(4)(C)(i) does not apply to depletion.
    - 25 -
    Respondent, by contrast, argues that if Congress had believed
    that the clause regarding section 56(g)(4)(C)(i) was redundant,
    it would not have included the clause.
    Respondent’s argument is more persuasive.   It is a cardinal
    rule of statutory construction to give effect to every clause in
    a statute if possible, and this does not change simply because
    the clause is in parentheses.    Market Co. v. Hoffman, 
    101 U.S. 112
    , 115-116 (1879).   While it is inappropriate to give a
    parenthetical such weight that it contradicts the plain meaning
    of the rest of the statute, see, e.g., Chickasaw Nation v. United
    States, 
    534 U.S. at 89
    , respondent’s argument is consistent with
    our interpretation of section 56(g)(4)(C)(i).    Therefore, given
    the limited utility of using the views of a subsequent Congress
    to make inferences as to the intent of an earlier Congress, we
    will not interpret section 56(g)(4)(F)(ii) as meaning that
    section 56(g)(4)(C)(i) does not apply to depletion.
    Petitioner also argues that the Commissioner’s corporate AMT
    instructions for the last 20 years confirm that section
    56(g)(4)(C)(i) does not apply to depletion.   Petitioner points
    out that the Commissioner’s “Adjusted Current Earnings Worksheet”
    does not list depletion among the ACE adjustments for items not
    deductible from earnings and profits.
    Even if we were to find the Commissioner’s worksheets to be
    misleading, these informal publications are not law.    Zimmerman
    - 26 -
    v. Commissioner, 
    71 T.C. 367
    , 371 (1978), affd. without published
    opinion 
    614 F.2d 1294
     (2d Cir. 1979); Green v. Commissioner, 
    59 T.C. 456
    , 458 (1972).    However, we do not find the worksheets to
    be misleading because they have a place for “Other items” and
    point to the partial list in section 1.56(g)-1(d)(3), Income Tax
    Regs., indicating that the worksheets are not comprehensive.
    In addition, the Commissioner published a technical advice
    memorandum in 1999 addressing another taxpayer’s argument similar
    to petitioner’s current argument that section 56(g)(4)(C)(i) does
    not apply to depletion for property placed in service on or
    before December 31, 1989.    Tech. Adv. Mem. 199910045 (Mar. 12,
    1999).    The taxpayer’s arguments were rejected for the same
    reasons respondent gives in this case.     
    Id.
       Therefore,
    petitioner’s argument that respondent is now changing his
    position after 20 years is without merit.
    VIII.    Development Costs
    Petitioner’s final argument is that if section
    56(g)(4)(C)(i) applies to depletion, then section 57(a)(1) is
    superfluous or at least duplicative.     Both section 56(g)(4)(C)(i)
    ACE adjustments and section 57(a)(1) preferences appear to
    require adjustments for the same amount:    the excess of the
    depletion deduction allowed under the percentage depletion method
    over the adjusted basis of the property.
    - 27 -
    Respondent concedes that there may be some overlap between
    the two sections and agrees with petitioner that under section
    1.56(g)-1(a)(6)(ii), Income Tax Regs., the amount of the ACE
    adjustment is reduced by the amount taken into account under
    section 57(a)(1) to prevent duplication.   However, respondent
    argues that sections 56(g)(4)(C)(i) and 57(a)(1) do not perfectly
    overlap.   Respondent concedes that unamortized section 56(a)(2)
    costs are added to the adjusted basis of property when
    calculating section 57(a)(1) preferences but argues that they are
    not added to the adjusted basis of property when calculating
    section 56(g)(4)(C)(i) ACE adjustments.    Therefore, the section
    57(a)(1) preference will generally be less than the excess of the
    depletion deduction over the property’s adjusted basis as
    calculated for purposes of section 56(g)(4)(C)(i), and the ACE
    adjustment will be the difference between this excess and the
    amount of the section 57(a)(1) preference.
    Petitioner argues that if section 56(g)(4)(C)(i) applies to
    depletion, sections 56(g)(4)(C)(i) and 57(a)(1) perfectly overlap
    because unamortized section 56(a)(2) costs are included in the
    adjusted basis of depletable property for purposes of calculating
    both section 57(a)(1) preferences and section 56(g)(4)(C)(i) ACE
    adjustments.6
    6
    Example 5 in the appendix to this Opinion illustrates the
    operation of secs. 56(a)(2), 57(a)(1), and 56(g)(4)(C)(i), and
    (continued...)
    - 28 -
    To decide this issue, we must consider whether sections
    56(g)(4)(C)(i) and 57(a)(1) share the same definitions of
    “property” and “adjusted basis”.   Our analysis shows that they do
    and that section 56(a)(2) costs should not be included in the
    adjusted basis of property for purposes of calculating the
    adjustments under either section 56(g)(4)(C)(i) or 57(a)(1).
    However, because respondent conceded in this case that section
    56(a)(2) costs may be included in the adjusted basis of property
    for purposes of calculating the section 57(a)(1) preference, we
    will allow petitioner to include section 56(a)(2) costs in the
    adjusted basis of the Mesquite Mine for the years at issue.
    A.   Section 56(g)(4)(C)(i)
    The ACE adjustment in section 56(g)(4)(C)(i) is the excess
    of the amount of the depletion deduction allowable under the
    percentage depletion method over the adjusted basis of the
    property.   See secs. 1.312-6(c)(1), 1.611-2(b)(2), Income Tax
    Regs.
    Section 614(a) provides the definition of “property” for
    purposes of determining depletion deductions:
    SEC. 614 (a). General Rule.--For the purpose of
    computing the depletion allowance in the case of mines,
    wells, and other natural deposits, the term “property”
    means each separate interest owned by the taxpayer in
    6
    (...continued)
    the positions of the parties and the Court.
    - 29 -
    each mineral deposit in each separate tract or parcel
    of land. [Emphasis added.]
    Section 1.611-1(d), Income Tax Regs., further explains the
    difference between “property” and the entire “mineral
    enterprise”:
    (1) “Property” means--(i) in the case of
    minerals, each separate economic interest owned in each
    mineral deposit in each separate tract or parcel of
    land or an aggregation or combination of such mineral
    interests permitted under section 614(b), (c), (d), or
    (e); * * *
    *         *       *       *      *      *       *
    (3) “Mineral enterprise” is the mineral deposit
    or deposits and improvements, if any, used in mining or
    in the production of oil and gas and only so much of
    the surface of the land as is necessary for purposes of
    mineral extraction. The value of the mineral
    enterprise is the combined value of its component parts.
    (4) “Mineral deposit” refers to minerals in
    place. When a mineral enterprise is acquired as a
    unit, the cost of any interest in the mineral deposit
    or deposits is that proportion of the total cost of the
    mineral enterprise which the value of the interest in
    the deposit or deposits bears to the value of the
    entire enterprise at the time of its acquisition.
    (5) “Minerals” includes ores of the metals, coal, oil,
    gas, and all other natural metallic and nonmetallic
    deposits, except minerals derived from sea water, the air,
    or from similar inexhaustible sources. It includes but is
    not limited to all of the minerals and other natural
    deposits subject to depletion based upon a percentage of
    gross income from the property under section 613 and the
    regulations thereunder.
    [Emphasis added.]
    These definitions make it clear that for purposes of determining
    depletion deductions, “property” includes only the actual
    - 30 -
    minerals, not improvements or the surface land that are part of
    the entire “mineral enterprise”.   While the definition of
    “minerals” is not limited to property eligible for the depletion
    deduction under section 613 but also includes oil and gas, it is
    limited to natural deposits that are exhaustible; i.e., subject
    to depletion.   Sec. 1.611-1(d)(5), Income Tax Regs.    Therefore,
    “property” for purposes of determining the allowable deduction
    for cost depletion purposes does not include unamortized section
    56(a)(2) costs because those are not costs paid for exhaustible
    minerals.
    Neither the Code nor the regulations specifically state
    whether unamortized section 56(a)(2) costs are included in the
    adjusted basis used for cost depletion purposes.    However,
    consistent with the definition of “property”, the definition of
    “adjusted basis” for cost depletion purposes does not include
    unamortized section 56(a)(2) costs.    Under section 612 the
    adjusted basis for purposes of determining depletion deductions
    is the adjusted basis provided in section 1011.    Section 1.612-1,
    Income Tax Regs., provides:
    (b) Special rules. (1) The basis for cost
    depletion of mineral or timber property does not
    include:
    (i) Amounts recoverable through depreciation
    deductions, through deferred expenses, and through
    deductions other than depletion, * * *
    - 31 -
    Because unamortized section 56(a)(2) costs are not recovered
    through depletion deductions but are amortized under section
    56(a)(2), they are not part of the adjusted basis for cost
    depletion purposes.
    This is consistent with the treatment of development costs
    that are deferred under section 616(b) (section 616(b) costs) or
    disallowed and amortized under section 291(b) (section 291(b)
    costs).   Like section 56(a)(2) costs, section 616(b) costs and
    section 291(b) costs are associated with depletable property but
    are deducted or amortized separately from the depletion
    deductions.    Under section 616(c), section 616(b) costs are
    included in the adjusted basis of the mine under section
    1016(a)(9) for most purposes but are disregarded for purposes of
    computing depletion deductions under section 611.    Similarly,
    under section 291(b)(5) the portion of the adjusted basis of
    property attributable to section 291(b) costs is not taken into
    account for purposes of determining depletion deductions under
    section 611.
    Petitioner argues that unamortized section 56(a)(2) costs
    should be included in the adjusted basis of depletable property
    for purposes of both sections 57(a)(1) and 56(g)(4)(C)(i) because
    section 56(a)(7)7 specifically provides that unamortized section
    7
    Sec. 56(a)(7) was redesignated sec. 56(a)(6) in 1997.
    Taxpayer Relief Act of 1997, Pub. L. 105-34, sec. 403(a), 111
    (continued...)
    - 32 -
    56(a)(2) costs are included in the adjusted basis of the
    property.   As in effect for the years at issue, section 56(a)(7)
    provides:
    (7) Adjusted basis.--The adjusted basis of any property
    to which paragraph (1) or (5) applies (or with respect to
    which there are any expenditures to which paragraph (2) or
    subsection (b)(2) applies) shall be determined on the basis
    of the treatment prescribed in paragraph (1), (2), or (5),
    or subsection (b)(2), whichever applies. [Emphasis added.]
    Because section 56(a)(2) provides that the section 56(a)(2) costs
    shall be capitalized and amortized ratably over a 10-year period,
    petitioner argues that section 56(a)(7) requires section 56(a)(2)
    costs to be included in the adjusted basis of depletable property
    for all AMT purposes.
    Section 56(a)(7) does provide that development costs should
    be included in the basis of the property to which section
    56(a)(2) applies.    However, development costs are incurred to
    improve the entire mineral enterprise, not to acquire the actual
    minerals in place.     See sec. 616(a).   Therefore, unamortized
    section 56(a)(2) costs are added to the adjusted basis of the
    mineral enterprise, but they are excluded from the adjusted basis
    of the mineral deposits for the purpose of determining depletion
    deductions.   See sec. 1.611-1(d)(3) through (5), Income Tax Regs.
    7
    (...continued)
    Stat. 844.
    - 33 -
    On the basis of the foregoing discussion, we conclude that
    unamortized section 56(a)(2) costs are not included in the
    adjusted basis of property for purposes of calculating ACE
    adjustments under section 56(g)(4)(C)(i) for depletion.
    B.    Section 57(a)(1)
    Section 57(a)(1) includes as a tax preference item:
    (1) Depletion.--With respect to each property (as
    defined in section 614), the excess of the deduction
    for depletion allowable under section 611 for the
    taxable year over the adjusted basis of the property at
    the end of the taxable year (determined without regard
    to the depletion deduction for the taxable year). * * *
    [Emphasis added.]
    Section 614(a) defines “property” as “each separate interest
    owned by the taxpayer in each mineral deposit in each separate
    tract or parcel of land.”     (Emphasis added.)   This is the
    definition of “property” that is used for purposes of cost
    depletion, which does not include unamortized section 56(a)(2)
    costs.    Therefore, unamortized section 56(a)(2) costs are not
    part of the property used in determining the amount of the
    section 57(a)(1) preference.     However, both petitioner and
    respondent take the position that, notwithstanding the narrow
    definition of “property” in section 614(a), unamortized section
    56(a)(2) costs are included in the definition of “adjusted basis”
    for purposes of section 57(a)(1).
    The regulations under section 57(a)(1) reference section
    1016 for determination of the adjusted basis.      Sec. 1.57-1(h)(3),
    - 34 -
    Income Tax Regs.   Section 1016(a)(9) requires adjustments to
    basis for deferred section 616(b) costs, and section 1016(a)(20)
    requires adjustments to basis for unamortized development costs
    deferred under section 59(e).    While section 1016 does not
    specifically refer to unamortized section 56(a)(2) costs, it does
    require adjustments for items properly chargeable to capital
    account and for depletion.   Sec. 1016(a)(1) and (2).
    The Commissioner has historically argued that deferred
    section 616 development costs are part of the adjusted basis used
    in calculating the section 57(a)(1) preference on the basis of
    the reference to section 1016 in section 1.57-1(h)(3), Income Tax
    Regs., and the references to deferred section 616 development
    costs in section 1016(a)(9) and (20).    See Tech. Adv. Mem. 83-14-
    011 (Dec. 22, 1982); Tech. Adv. Mem. 97-47-002 (Nov. 21, 1997);
    Field Serv. Adv. Mem. 200021006 (May 25, 2000); cf. Field Serv.
    Adv. Mem. 0614 (June 30, 1993).    While the pattern in section
    1016 is to adjust basis for deferred section 616 development
    costs, respondent’s argument ignores the fact that the definition
    of “property” in section 614(a), which is the definition of
    property used by section 57(a)(1), does not include the entire
    mineral enterprise but includes only minerals in place.
    Therefore, section 1016 may require unamortized section 56(a)(2)
    costs to be added to the basis of the mineral enterprise, but it
    - 35 -
    is only the adjusted basis of the minerals in place that is used
    to calculate the section 57(a)(1) preference.
    While not directly on point, the Supreme Court’s reasoning
    in United States v. Hill, 
    506 U.S. 546
     (1993), persuades us that
    unamortized section 56(a)(2) costs are not included in the
    adjusted basis of depletable property for purposes of calculating
    section 57(a)(1) preferences.    The issue in Hill was whether
    unrecovered costs of depreciable tangible items used to exploit
    the taxpayers’ mines (unrecovered depreciation costs) should be
    added to the adjusted basis for purposes of section 57(a)(8),
    which was redesignated section 57(a)(1) in 1986 by TRA sec.
    701(a), 
    100 Stat. 2320
    .    Id. at 548.   The Supreme Court reasoned
    that because taxpayers do not deduct unrecovered depreciation
    costs through depletion but instead deduct them through
    depreciation, the unrecovered depreciation costs are separate
    assets from the mineral deposits.    Id. at 558-559.   This is
    similar to the way that land is treated as a separate asset from
    a building that sits on it for purposes of calculating
    depreciation, but the land and the building have a combined
    adjusted basis for purposes of determining gain or loss when they
    are sold together.   Id.   The Supreme Court relied on the
    definitions of “property”, “mineral deposit”, “minerals in
    place”, and “mineral enterprise” found in section 614(a) and
    section 1.611-1(d), Income Tax Regs., to decide that the term
    - 36 -
    “property” used in section 57(a)(8) includes only minerals in
    place and excludes improvements.      Id. at 553-560.   While noting
    the taxpayers’ argument that section 1016 governs adjustments to
    basis, the Supreme Court concluded that “the computation of
    adjusted basis under § 1016 is wholly predicated on, rather than
    independent of, an understanding of ‘mineral deposit’ as distinct
    from ‘improvements’ within the meaning of the regulations under §
    611.”    Id. at 554.
    The Supreme Court declined to extend its reasoning to costs
    deferred under section 616, particularly section 616(b) costs,
    because section 616(c) sets up a different system for section
    616(b) costs.     Id. at 564 n.12.   However, the Supreme Court’s
    findings, that (1) the term “property” as used in section 614(a)
    includes only minerals in place and (2) the definition of
    “property” is critical to defining the adjusted basis of the
    property, apply in the case before us.      Id. at 553-554.   Because
    unamortized section 56(a)(2) costs are not directly incurred to
    acquire minerals in place, they are not included in the
    definition of depletable property in section 614(a).      Under the
    reasoning in Hill, this means that they cannot be included in the
    adjusted basis of depletable property for purposes of calculating
    section 57(a)(1) preferences.
    This interpretation is also supported by the legislative
    history of the revisions to the AMT in 1986.     The House
    - 37 -
    conference report states:   “The excess over the adjusted basis of
    the depletable property is a preference.”   H. Conf. Rept. 99-841
    (Vol. II), supra at II-268, 1986-3 C.B. (Vol. 4) at 268 (emphasis
    added).   Because unamortized section 56(a)(2) costs are not
    depletable but are amortized over a 10-year period, this
    statement indicates that they should not be added to the adjusted
    basis of the property for purposes of section 57(a)(1).
    Petitioner again argues that section 56(a)(7) defines
    “adjusted basis” for all AMT purposes and that that section
    provides that unamortized section 56(a)(2) costs are included in
    the basis of property.   However, section 1.57-1(h)(3), Income Tax
    Regs., references section 1016, not section 56(a)(7), for the
    definition of “adjusted basis” for purposes of calculating
    section 57(a)(1) preferences.    In any event, our analysis shows
    that the property referred to in section 56(a)(7) is the mineral
    enterprise, and only the adjusted basis of the mineral deposit is
    relevant for determining section 57(a)(1) preferences.
    Our analysis is inconsistent with the Commissioner’s
    historical and current position that unamortized section 56(a)(2)
    costs may be included in the adjusted basis of depletable
    property for purposes of calculating section 57(a)(1)
    preferences.   However, because respondent has conceded this issue
    as it relates to the Mesquite Mine, the parties should
    nevertheless apply respondent’s concession in the Rule 155
    - 38 -
    computation that the parties agree will be necessary after the
    remaining issue has been resolved.
    IX.   Conclusion
    On the basis of our analysis, unamortized section 56(a)(2)
    costs are not included in the adjusted basis of depletable
    property when calculating the amount of section 56(g)(4)(C)(i)
    ACE adjustments or section 57(a)(1) preferences.    However,
    because respondent conceded that unamortized section 56(a)(2)
    costs may be included in the adjusted basis of the Mesquite Mine
    for purposes of calculating section 57(a)(1) preferences,
    petitioner may include such costs.     Therefore, petitioner is not
    required to make adjustments to its calculation of section
    57(a)(1) preferences for the Mesquite Mine for the years at issue
    and should compute its AMT consistent with our holding that
    section 56(g)(4)(C)(i) applies to depletion to the extent that
    amounts treated as section 56(g)(4)(C)(i) ACE adjustments are not
    also treated as section 57(a)(1) preferences.
    To reflect the foregoing,
    An appropriate order will
    be issued.
    - 39 -
    APPENDIX
    Example 1:   The Operation of Section 56(g)(4)(C)(i) and (F)(i)
    Taxpayer owns a mine that was placed in service after
    December 31, 1989. The mine has an adjusted basis of $100. The
    deduction allowed under the percentage depletion method is $25,
    and the deduction allowed under the cost depletion method is $20.
    Taxpayer did not incur any development costs under section 616(a)
    that it is required to capitalize and amortize under section
    56(a)(2). In order to demonstrate the difference between section
    56(g)(4)(C)(i) and (F)(i), in Examples 1-4 we assume that section
    57(a)(1) does not apply.
    Under section 56(g)(4)(F)(i), Taxpayer must make an ACE
    adjustment of $5, which is the difference between the deduction
    allowed under the percentage depletion method ($25) and the
    deduction allowed under the cost depletion method ($20).
    Taxpayer does not make an ACE adjustment under section
    56(g)(4)(C)(i) because Taxpayer’s deduction for depletion ($25)
    is less than the mine’s adjusted basis ($100), so it does not
    exceed the amount allowable as a deduction in any tax year.
    Taxpayer will eventually be allowed to deduct $25 under the cost
    depletion method.
    Example 2:
    Same as Example 1, except that Taxpayer’s mine was placed in
    service on or before December 31, 1989.
    Taxpayer is not required to make any ACE adjustments for
    depletion. Section 56(g)(4)(F)(i) does not apply to property
    placed in service on or before December 31, 1989, and as
    discussed in Example 1, Taxpayer is not required to make an
    adjustment under section 56(g)(4)(C)(i).
    Example 3:
    Same as Example 1, except that Taxpayer’s mine has an
    adjusted basis of zero. Therefore, no deduction is allowed under
    the cost depletion method.
    Taxpayer must make an ACE adjustment under section
    56(g)(4)(F)(i) of $25, which is the difference between the
    deduction allowed under the percentage depletion method ($25) and
    the deduction allowed under the cost depletion method (zero).
    Taxpayer is not required to make an ACE adjustment under
    section 56(g)(4)(C)(i). Because Taxpayer is required to take
    into account the excess of the deduction allowed under the
    percentage depletion method over the amount allowed in any year
    ($25) in calculating its ACE, Taxpayer is no longer claiming a
    - 40 -
    deduction for an item that would not be deductible for purposes
    of computing earnings and profits.
    Example 4:
    Same as Example 3, except that Taxpayer’s mine was placed in
    service on or before December 31, 1989.
    Taxpayer is not required to make an ACE adjustment under
    section 56(g)(4)(F)(i) because that section does not apply to
    property placed in service on or before December 31, 1989.
    Petitioner argues that section 56(g)(4)(C)(i) does not
    require Taxpayer to make an ACE adjustment for depletion because
    only section 56(g)(4)(F)(i) applies to depletion.
    Respondent argues that Taxpayer is required to make an
    adjustment under section 56(g)(4)(C)(i) of $25, which is the
    difference between the deduction taken under the percentage
    depletion method ($25) and the amount that would be allowable in
    any year under the cost depletion method (zero). Because
    Taxpayer did not make an ACE adjustment for this amount under
    section 56(g)(4)(F)(i), nothing prevents section 56(g)(4)(C)(i)
    from applying.
    We agree with respondent that section 56(g)(4)(F)(i) does
    not prevent section 56(g)(4)(C)(i) from applying to depletion.
    However, as discussed in the Opinion, the $25 difference
    between the amount allowable under the percentage depletion
    method and the adjusted basis of the mine will be taken into
    account under section 57(a)(1). Therefore, section
    56(g)(4)(C)(i) will be preempted by section 57(a)(1) just as it
    was preempted by section 56(g)(4)(C)(i) in Example 3.
    Example 5:    The Treatment of Section 56(a)(2) Costs Under
    Sections 57(a)(1) and 56(g)(4)(C)(i)
    Taxpayer owns property that was placed in service on or
    before December 31, 1989. The property has an adjusted basis for
    cost depletion purposes(cost basis) of zero, excluding
    unamortized section 56(a)(2) costs. Taxpayer has unamortized
    section 56(a)(2) costs of $20. Taxpayer is allowed a deduction
    of $25 under the percentage depletion method.
    Respondent and petitioner both argue that Taxpayer’s section
    57(a)(1) preference equals $5:
    $25   (depletion deduction)
    - 0    (cost basis)
    - 20   (unamortized section 56(a)(2) costs)
    5   (section 57(a)(1) preference)
    - 41 -
    Respondent argues that Taxpayer’s section 56(g)(4)(C)(i) ACE
    adjustment equals $20:
    $25   (depletion deduction)
    - 0   (cost basis)
    - 5   (amount taken into account under section 57(a)(1))
    20   (section 56(g)(4)(C)(i) ACE adjustment)
    Respondent argues that the unamortized section 56(a)(2) costs are
    not included in basis for purposes of section 56(g)(4)(C)(i).
    Petitioner argues that Taxpayer’s section 56(g)(4)(C)(i) ACE
    adjustment, if it applies to depletion, would equal zero because
    unamortized section 56(a)(2) costs are taken into account:
    $25 (depletion deduction)
    - 0 (cost basis)
    - 20 (unamortized section 56(a)(2) costs)
    - 5 (amount taken into account under section 57(a)(1))
    0 (section 56(g)(4)(C)(i) ACE adjustment)
    Under the Court’s analysis, Taxpayer’s section 57(a)(1)
    preference should equal $25 because unamortized section 56(a)(2)
    costs are not taken into account in either calculation:
    $25 (depletion deduction)
    - 0 (cost basis)
    25 (section 57(a)(1) preference)
    Therefore, Taxpayer’s section 56(g)(4)(C)(i) ACE adjustment
    would equal zero:
    $25   (depletion deduction)
    - 0    (cost basis)
    - 25   (amount taken into account under section 57(a)(1))
    0   (section 56(g)(4)(C)(i) ACE adjustment)
    However, because respondent conceded that petitioner may
    include section 56(a)(2) costs in the Mesquite Mine’s adjusted
    basis for purposes of determining the section 57(a)(1)
    preferences attributable to that mine, in their Rule 155
    computations the parties should follow respondent’s position (the
    section 57(a)(1) preference would be $5 and the section
    56(g)(4)(C)(i) ACE adjustment would be $20 in this example).