Cumberland Coal Resources, LP v. Federal Mine Safety & Health Review Commission , 717 F.3d 1020 ( 2013 )


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  •  United States Court of Appeals
    FOR THE DISTRICT OF COLUMBIA CIRCUIT
    Argued February 14, 2013                Decided June 7, 2013
    No. 11-1464
    CUMBERLAND COAL RESOURCES, LP,
    PETITIONER
    v.
    FEDERAL MINE SAFETY AND HEALTH REVIEW COMMISSION
    AND SECRETARY OF LABOR,
    RESPONDENTS
    UNITED MINE WORKERS OF AMERICA,
    INTERVENOR
    On Petition for Review of a Decision of the
    Federal Mine Safety and Health Review Commission
    Ralph Henry Moore II argued the cause for petitioner. With
    him on the briefs was Patrick W. Dennison.
    Robin A. Rosenbluth, Senior Attorney, U.S. Department of
    Labor, argued the cause for respondent. With him on the brief
    were W. Christian Schumann, Counsel. John T. Sullivan,
    Attorney, Mine Safety and Health Review Commission, entered
    an appearance.
    Judith Rivlin and Arthur Traynor were on the brief for
    intervenor United Mine Workers of America in support of
    2
    respondent.
    Before: ROGERS and TATEL, Circuit Judges, and SENTELLE,
    Senior Circuit Judge.
    Opinion for the Court filed by Senior Circuit Judge
    SENTELLE.
    SENTELLE, Senior Circuit Judge: This case comes before
    us on a petition for review of the Federal Mine Safety and
    Health Review Commission’s determination that Cumberland
    Coal Resources, LP’s failure to maintain adequate emergency
    lifelines in its mine’s escapeways was a significant and
    substantial violation of the Federal Mine Safety and Health Act
    of 1977 (“Mine Act”), 
    30 U.S.C. § 814
    (d)(1). Cumberland
    argues that the Commission applied the wrong standard when it
    reversed an administrative law judge’s (“ALJ’s”) determination
    that the violations were not significant and substantial, and that
    even if it applied the correct standard, its findings are not
    supported by substantial evidence. Because we conclude that
    the Commission applied the correct standard and that substantial
    evidence supported its findings, we deny Cumberland’s petition
    for review.
    I. BACKGROUND
    A. Statutory and Regulatory Background
    In 1977, Congress enacted the Federal Mine Safety and
    Health Act for the purpose of improving the working conditions
    of miners. 
    30 U.S.C. § 801
    . Under the Act, inspectors from the
    Mine Safety and Health Administration (“MSHA”), acting on
    behalf of the Secretary of Labor, conduct regular compliance
    inspections of mines. 
    30 U.S.C. § 813
    (a). When an inspector
    believes that the operator of a mine has violated the Act or
    3
    enforceable regulations promulgated pursuant to the Act, the
    inspector is authorized to issue citations for such violations and,
    in appropriate cases, to issue orders to withdraw personnel from
    the mine until “such violation has been abated.” 
    30 U.S.C. § 814
    (b). Section 814(d)(1) provides that if the authorized
    representative of the Secretary finds that there has been a
    violation of a mandatory health or safety standard and also finds
    that the violation “is of such nature as could significantly and
    substantially contribute to the cause and effect of a coal or other
    mine safety or health hazard,” then the inspector is to include
    that finding in the citation issued for the violation. Such a
    finding of a significant and substantial violation (often referred
    to as an “S&S violation”) is a precondition for enhanced
    enforcement actions under the Mine Safety Act. See 
    30 U.S.C. § 814
    (d) (discussed and applied in RAG Cumberland Resources
    LP v. FMSHRC, 
    272 F.3d 590
    , 592–93 (D.C. Cir. 2001)).
    The violations at issue in this case arose under amendments
    to the Mine Safety and Health Act enacted in response to three
    multiple-fatality mine disasters, in which miners who were
    unable to evacuate mines died. Specifically, the Mine
    Improvement and New Emergency Response Act of 2006
    (“MINER Act”), amended 
    30 U.S.C. § 876
     to require operators
    to provide flame resistant and directional lifelines in escapeways
    “to enable evacuation.” MINER Act Section 2(3)(b)(E)(iv),
    Pub. L. No. 109-236 (S. 2803) (June 15, 2006), codified at 
    30 U.S.C. § 876
    (b)(2)(E)(iv). Also in the wake of the disasters,
    MSHA issued an Emergency Temporary Standard on emergency
    mine evacuations in March 2006. 
    71 Fed. Reg. 12252
     (Mar. 9,
    2006). This standard became a final rule on December 8, 2006.
    
    71 Fed. Reg. 71430
     (Dec. 8, 2006). That rule requires operators
    to provide each mine escapeway with a lifeline that is “[l]ocated
    in such a manner for miners to use effectively to escape.” 
    30 C.F.R. § 75.380
    (d)(7)(iv). Each lifeline must be equipped with
    directional indicators showing the route of escape, indicators
    4
    marking a branch line that is attached to the lifeline and leads to
    a cache of stored self-contained self-rescuers providing
    breathable air for emergencies, and indicators marking a branch
    line attached to the lifeline and leading to a refuge alternative for
    miners unable to escape. 
    30 C.F.R. § 75.30
    (d)(7)(v), (vii).
    In December 2007, obedient to the statutory requirement
    that the Secretary or his representative conduct frequent
    inspections of mines to ensure compliance with mandatory
    safety standards, Thomas J. Whitehair II, Special Investigator
    for the Department of Labor’s Mine Safety and Health
    Administration, conducted an inspection of the Cumberland
    Mine near Waynesburg, Pennsylvania. Whitehair inspected four
    of the mine’s escapeways over a four-day period and issued a
    citation for each, alleging violation of the lifeline requirement of
    § 75.380(d)(7)(iv). He further designated each violation as
    significant and substantial, finding that the lack of adequate
    lifelines would have delayed miners escaping from an
    emergency, which would have been reasonably likely to result
    in serious injury or death.
    B. The Administrative Proceedings
    On April 11, 2008, the Secretary filed a petition for
    assessment of civil penalty for the violations. Cumberland
    contested the citations before an administrative law judge, who
    deleted the significant and substantial designations on January
    21, 2011. See 
    33 FMSHRC 1482
    . Thereafter, the Commission
    heard the petition for review and granted the petition. The
    Commission reversed and remanded to the ALJ for the
    imposition of penalties. On October 25, 2011, the ALJ issued
    a decision on remand imposing penalties. After the Commission
    denied Cumberland’s petition for discretionary review,
    Cumberland filed the present petition for review with this court
    on November 29, 2011.
    5
    Because our review is dependent in part on the sufficiency
    of the evidence in the administrative proceedings, we will set
    forth the relevant evidence in some detail, as well as make
    further references to the record in our analysis. The evidence
    was presented in the testimony of Inspector Whitehair relating
    his findings and conclusions in the four-day visit to the mine in
    December 2007. Whitehair first testified as to his experience in
    mining and mine safety. According to that testimony, he had
    twenty-two years experience inspecting mines for MSHA and an
    additional fourteen years experience working in mines,
    including in mine safety positions. He then testified as to his
    findings of violations at the Cumberland Mine.
    1. The Violations
    a. The December 6, 2007, Violation
    Whitehair testified that he inspected the No. 1 belt entry
    of the Five Butt East Longwall section on December 6, 2007.
    He found three violations in the provision of that lifeline which
    would have delayed miners in escaping in the event of an
    emergency. First, it was hung so high from the mine floor that
    it would have been difficult or impossible for many miners to
    reach. Second, it was suspended from J-hooks that pointed in
    different directions. And third, cables and waterlines ran
    underneath and perpendicular to it.
    Whitehair further testified that these conditions would
    have delayed miners in escaping from an emergency. First,
    because many would have found the lifeline out of reach, they
    would have needed to use a tool to access it. Second, miners
    would have been forced to use that tool to flip the lifeline off the
    J-hooks, which were pointed in all directions—a task Whitehair
    testified “would take considerable doing and a considerable
    amount of time.” Third, once off the hooks, the lifeline would
    6
    fall on top of the water lines and cables that ran underneath and
    perpendicular to it, requiring miners to release the lifeline and
    search for it on the other side of the cables and waterlines.
    Whitehair further testified that this delay would have been
    reasonably likely to result in injury. He believed that in the
    event of an emergency during which miners would need a
    lifeline, they would not be able to escape and would eventually
    succumb to carbon monoxide poisoning. The ALJ credited that
    testimony.
    b. The December 7, 2007, December 10, 2007,
    and December 11, 2007, Violations
    The evidence is similar with respect to the other three
    violations. Whitehair testified that on December 7, 2007, the
    lifeline in the No. 2 track entry for the Five Butt East Longwall
    hung out of reach for many miners throughout most of the track
    entry. He also observed track equipment, cables, and waterlines
    under the lifeline.
    Whitehair testified that on December 10, 2007, he
    observed that the lifeline in the No. 2 track entry of the Eight
    Butt East section was hung high and out of reach for many
    miners throughout most of the track entry. He also observed
    track equipment, cables, and waterlines under the lifeline.
    On December 11, 2007, Whitehair found nearly the
    entire lifeline in the No. 2 track entry of the Fifteen Butt East
    section hung high and out of reach for many miners. He also
    testified that it was suspended over track equipment.
    Whitehair testified that the track equipment under the
    lifeline would delay miners attempting to escape an emergency.
    In thick smoke, the lead miner would be blinded and would run
    7
    into the track equipment. That could injure him or rupture his
    self-contained self-rescuer—the portable oxygen source
    providing breathable air that each miner should have during an
    emergency—exposing him to deadly smoke. Even if the lead
    miner was unscathed, running into track equipment would delay
    all the miners attempting to escape. Furthermore, Whitehair
    testified that the lifeline could snag on the track equipment,
    causing further delays as panicked, blinded miners attempted to
    free it. Even if miners knew the track equipment was in their
    path, they would have to proceed more slowly than they
    otherwise would to avoid it in the smoky darkness, which would
    delay their escape. Whitehair also testified that the lifelines
    falling on cables and waterlines would delay miners escaping.
    As he had with the first violation, Whitehair testified that he
    designated these three violations significant and substantial
    because the delays he described would be reasonably likely to
    make it impossible for a miner to escape an emergency, meaning
    the miner would eventually succumb to carbon monoxide
    poisoning.
    In short, based on his other findings, Whitehair found that
    each of the four violations was significant and substantial.
    C. The Administrative Decisions
    As noted above, the administrative law judge, while
    crediting and adopting the inspector’s underlying findings,
    rejected the findings of significant and substantial violations. 31
    FMSHRC at 1163–64. The Commission then reversed the ALJ
    on the significant-and-substantial issue in the decision that we
    review today.
    The ALJ and the Commission differ over an issue of basic
    understanding of the statutory and regulatory requirements for
    determining the significant and substantial status of a violation.
    8
    As the Commission states in its brief to us, “the issue [is]
    whether, in evaluating whether a violation of Section
    75.380(d)(7)(iv)’s requirement regarding the location of lifelines
    ‘is of such nature as could significantly and substantially
    contribute to the cause and effect of a coal or other mine safety
    or health hazard’ within the meaning of Section 104(d)(1) of the
    Mine Act, 
    30 U.S.C. § 814
    (d)(1), one should assume the
    occurrence of an emergency necessitating an evacuation in
    which the lifeline would need to be used.” Respondent’s Br.
    22–23. The answer to this question is essential to the decision
    of the case and any other case involving violations of statutory
    and safety regulations created to protect miners and reduce
    danger during evacuations.
    The ALJ adopted a view that Whitehair and the
    Commission acted inconsistently with Commission precedent in
    determining that the violations were significant and substantial.
    The ALJ relied in making that determination, and Cumberland
    relies before us, on language from Secretary of Labor v. Mathies
    Coal Co., 
    6 FMSHRC 1
    , 3–4 (1984), to the effect that in order
    to prove a significant and substantial violation the Secretary
    must prove:
    (1) [T]he underlying violation of a mandatory safety
    standard; (2) a discrete safety hazard—that is, a measure of
    danger to safety—contributed to by the violation; (3) a
    reasonable likelihood that the hazard contributed to will
    result in an injury; and (4) a reasonable likelihood that the
    injury in question will be of a reasonably serious nature.
    The ALJ ruled that the Secretary had failed to establish the
    third element of the Mathies test—a reasonable likelihood that
    the hazard contributed to by the violations would result in an
    injury. 31 FMSHRC at 1163. According to the ALJ, the
    Secretary had failed to prove that there was a reasonable
    9
    likelihood that an emergency situation would arise, and
    therefore it was not reasonably likely that the hazard contributed
    to—miners being delayed in escaping from an
    emergency—would result in an injury.
    The Commission unanimously reversed the ALJ and held
    that all four lifeline standard violations were significant and
    substantial. The Commission interpreted the statute and
    regulation to require assessment of the reasonable likelihood of
    injury in the circumstance in which the safety equipment
    becomes relevant. That is, evacuation standards, such as those
    before the Commission and now before us, “apply meaningfully
    only when an emergency actually occurs.” 33 FMSHRC at
    2367. After the ALJ on remand increased the penalties for each
    violation to account for the significant and substantial findings,
    Cumberland filed this petition.
    II. ANALYSIS
    While Cumberland in its brief before us alleges five issues,
    our review neatly falls into two parts: (1) did the Commission
    properly interpret the statutory and regulatory requirement of
    significant and substantial violation for enhanced penalties?; and
    (2) if the Commission applied the correct standard, was there
    sufficient evidence to support the Commission’s decision? We
    discuss those two issues in turn.
    A. The Significant and Substantial Standard
    The Mine Act requires the Commission to adjudicate
    challenges by mine operators to citations and orders issued by
    the Secretary. See 
    30 U.S.C. § 813
    . The Commission must
    defer to “the Secretary’s interpretations of the law and
    regulations.” Sec’y of Labor v. Cannelton Indus., Inc., 
    867 F.2d 1432
    , 1435 (D.C. Cir. 1989) (internal quotation marks omitted).
    10
    On review, this court must defer to the Secretary’s reasonable
    interpretations of the language of the Mine Act. 
    Id.
     (citing
    Chevron U.S.A., Inc. v. Natural Res. Def. Council, Inc., 
    467 U.S. 837
     (1984)). “[I]n the statutory scheme of the Mine Act, the
    Secretary’s litigating position before the Commission is as much
    an exercise of delegated lawmaking powers as is the Secretary’s
    promulgation of a . . . health and safety standard, and is
    therefore deserving of deference.” Sec’y of Labor v. Excel
    Mining, LLC, 
    334 F.3d 1
    , 6 (D.C. Cir. 2003) (internal quotation
    marks omitted). Where, as here, the Secretary and the
    Commission agree, there is no question but that we must accord
    deference to their joint view. RAG Cumberland Res. LP v.
    FMSHRC, 
    272 F.3d 590
    , 596 (D.C. Cir. 2001).
    We analyze the Secretary’s and the Commission’s
    interpretations of the Mine Act under the Chevron framework.
    
    Id.
     Under that familiar standard, “this court, of course, must
    give effect to the unambiguously expressed intent of Congress.”
    Cannelton Indus., Inc., 
    867 F.2d at 1435
     (internal quotation
    marks omitted). If “the statute is silent or ambiguous with
    respect to the specific issue,” the court defers to the Secretary’s
    interpretation provided the interpretation is “‘a permissible
    construction of the statute.’” 
    Id.
     (quoting Chevron, 
    467 U.S. at 843
    ).
    
    30 U.S.C. § 814
    (d)(1) provides that a significant and
    substantial violation is one that is “of such nature as could
    significantly and substantially contribute to the cause and effect
    of a coal or other mine safety or health hazard.” We first
    consider the Secretary’s argument that this language
    unambiguously expresses Congress’s intent to require
    decisionmakers evaluating the significant and substantial nature
    of violations of emergency safety standards such as
    § 75.380(d)(7)(iv) to assume the existence of the contemplated
    emergency.
    11
    The Secretary argues that Congress’s use of the words
    “could” and “contribute” and the phrase “cause and effect” to
    describe significant and substantial violations unambiguously
    compels his interpretation. Specifically, the Secretary argues
    that “it is impossible to determine whether the violations of
    Section 75.380(d)(7)(iv) significantly and substantially
    contributed to the cause and effect of the hazard in
    question—miners being unable to escape quickly from a mine
    during an emergency in which miners would need to use the
    lifeline—without assuming the occurrence of such an
    emergency.” Respondent’s Br. 27. The Secretary also argues
    that the word “could” refers to the violation’s intrinsic capacity
    to contribute to the hazard, not to any specific probability that it
    will. Id. at 28 (quoting United States v. Peterson, 
    538 F.3d 1064
    , 1072 (9th Cir. 2008)). Although the Secretary does not
    flesh this argument out, he appears to mean that because
    intrinsic capacity is enough, a violation of an emergency safety
    standard can be significant and substantial even if an emergency
    is not likely.
    We do not think the Mine Act’s language unambiguously
    compels the Secretary’s interpretation. The Secretary’s
    argument that “could” refers to intrinsic capacity rather than
    probability overlooks the fact that the statute refers to a violation
    that could “significantly and substantially contribute to the cause
    and effect of a . . . hazard.” 
    30 U.S.C. § 814
    (d)(1) (emphasis
    added). Because the two adverbs inherently suppose a degree of
    contributing, we cannot hold that the language unambiguously
    excludes a probabilistic approach to the factfinder’s
    determination that a particular violation falls within the ambit of
    the statutory language. We therefore reject the Secretary’s
    proposition that his interpretation can be upheld under the first
    prong of Chevron.
    12
    Perhaps in the evaluation of the possible significant and
    substantial nature of a violation of general safety standards not
    contemplating an emergency, the Secretary and the Commission
    might focus exclusively on the propensity of the violation to
    “contribute to the cause and effect” of a safety or health hazard.
    But violations of emergency safety standards raise a different set
    of problems. Those standards—and specifically, the standards
    effectuating the MINER Act’s protection of escape—protect
    specifically against hazards that may arise after an emergency
    has already occurred. Despite that fact, inspections determining
    the compliance of mine operators with the standard must be
    made in the absence of the contemplated emergency. Therefore,
    in the view of Cumberland and the ALJ, the Secretary should
    weigh the probability variable independent of the violation, that
    is, of the probability of a hazard arising in the first place. On
    that issue, § 814(d)(1) is silent. We cannot, therefore, say that
    the intent of Congress is clear and unambiguous so as to allow
    the invocation of Chevron step one.
    It may be, as the Secretary argues, that the term “hazard” in
    § 814(d)(1) accounts for the probability of an emergency
    occurring because the hazard in this case can only be stated in
    terms that assume the existence of an emergency. But it may
    also be, as Cumberland argues, that the phrase “could
    significantly and substantially contribute,” which calls to mind
    an evaluation of chance, properly accounts for all probability
    variables in any given significant and substantial evaluation,
    including the probability of an emergency occurring. We
    therefore proceed to the second step of the Chevron analysis and
    evaluate the reasonableness of the Secretary’s interpretation.
    Although the statute does not unambiguously compel the
    Secretary’s interpretation, that interpretation is nonetheless
    reasonable. As the Commission explained, emergency safety
    standards are fundamentally different from non-emergency
    13
    standards because they are designed to apply meaningfully only
    in times of emergency. If the Secretary interpreted, or if we
    compelled the Secretary to interpret, § 814(d)(1) to command
    decisionmakers not to assume the existence of the contemplated
    emergency when evaluating the significant and substantial
    nature of a violation of emergency safety standards, it would
    appear unlikely that any violation of those standards would ever
    be “significant and substantial.” That is, the violation of those
    standards apparently would never, or at least rarely, contribute
    to the existence of the emergency so that the scale would be
    loaded against the finding. Given that the violation of those
    standards could be expected to have serious, indeed tragic,
    consequences, it is reasonable for the Secretary to interpret the
    statute and his own regulations to avoid that odd result.
    To expand on that thought, the interpretation advanced
    by Cumberland would be inconsistent with our prior holding
    that the significant and substantial inquiry should focus, as the
    statutory text directs, on the nature of the violation. Sec’y of
    Labor v. FMSHRC, 
    111 F.3d 913
    , 917 (D.C. Cir. 1997). Again,
    a violation of the lifeline standard could only contribute to the
    delayed evacuation from emergency hazard if there is an
    emergency, but the likelihood of an emergency will usually have
    nothing to do with the violation of the emergency safety
    standard. Thus, if the decisionmaker does not assume the
    existence of the emergency, then his focus must necessarily shift
    away from the nature of the violation to the likelihood of the
    emergency.
    None of Cumberland’s arguments for rejecting the
    Secretary’s interpretation is persuasive. First, Cumberland
    argues that the Secretary’s interpretation is inconsistent with the
    Commission’s Mathies test. As noted above, the Commission
    held in Mathies that to demonstrate a significant and substantial
    violation, the Secretary must prove four elements: (1) the
    14
    underlying violation of a mandatory safety standard; (2) a
    discrete safety hazard—that is, a measure of danger to
    safety—contributed to by the violation; (3) a reasonable
    likelihood that the hazard in question will result in an injury; and
    (4) a reasonable likelihood that the injury in question will be of
    a reasonably serious nature. 6 FMSHRC at 3–4. Cumberland
    argues that by assuming the existence of an emergency, the
    Commission excused the Secretary from his burden of proving
    the second and third elements of the Mathies test. The hazard
    here is delayed escape from an emergency, but there can be no
    delayed escape, unless there is an emergency in the first place.
    Similarly, if there is no emergency, then there can be no
    resulting injury.
    The problem with these arguments is that they assume
    that the Mathies test forbids the decisionmaker from assuming
    the existence of an emergency. It does not. Indeed, in the only
    Commission precedent to have considered whether assuming the
    existence of an emergency is consistent with the Mathies test,
    the Commission split on the question, resulting in a non-
    precedential opinion. See Sec’y of Labor v. Manalapan Mining,
    
    18 FMSHRC 1375
     (1996). Further, ALJs have routinely
    assumed the occurrence of the contemplated emergency in
    evaluating the significant and substantial nature of violations
    that only come into play in the event of an emergency. See, e.g.,
    Twentymile Coal Co., 
    29 FMSHRC 806
    , 810–11 (2007) (ALJ);
    American Coal Co., 
    29 FMSHRC 252
    , 263 (2007) (ALJ), aff’d
    on other grounds, 
    29 FMSHRC 941
     (2007); Anderson Sand &
    Gravel, 
    21 FMSHRC 186
    , 191 (1999) (ALJ). Therefore,
    contrary to Cumberland’s argument, the Secretary’s argument
    is not inconsistent with Mathies. In addressing this argument,
    we do not intend to imply that we are adopting the Mathies test,
    the validity of which is not challenged here. Instead, we simply
    reject Cumberland’s argument that the Secretary’s interpretation
    arbitrarily or capriciously departs from Commission precedent.
    15
    Cumberland also argues that the Secretary’s
    interpretation ignores Commission precedent by excusing the
    Secretary from his duty to consider all of the facts surrounding
    a violation. Petitioner’s Br. 33–34 (citing National Gypsum, 
    3 FMSHRC 822
    , 825 (1981)).            But we have held that
    decisionmakers should not consider facts unrelated to the
    violation when undertaking a significant and substantial
    evaluation. Sec’y of Labor v. FMSHRC, 
    111 F.3d at 917
    . In this
    case, the Secretary met the standard in our cases and the
    National Gypsum standard by considering all of the facts
    surrounding the violation.
    Finally, Cumberland argues that the Secretary’s
    interpretation ignores Commission precedent rejecting an
    interpretation of the statute by which all mine safety and health
    standards would be significant and substantial except those that
    had no potential to cause injury. National Gypsum, 3 FMSHRC
    at 825. That general rule, which would apply to all violations,
    differs from the narrower rule at issue here, which applies only
    to violations of emergency safety measures. Because the stakes
    are much higher in emergency situations, a rule that would make
    many or most violations of emergency safety measures
    significant and substantial is distinguishable from a rule that
    would make all violations of all safety measures significant and
    substantial. Moreover, the Secretary proposes a rule that would
    require a reasonable likelihood of injury, whereas National
    Gypsum rejected a broader rule that would have allowed a
    significant and substantial finding anytime there was any
    potential of injury, not just where injury was reasonably likely.
    For these reasons, Cumberland’s argument fails.
    16
    B. Substantial Evidence
    Cumberland next argues that even if the Commission
    applied the correct significant and substantial standard, its
    determination that the violations at issue here were significant
    and substantial is not supported by substantial evidence. Under
    the substantial evidence standard of review, we may not reject
    reasonable findings and conclusions, even if we would have
    weighed the evidence differently. Sec’y of Labor v. Keystone
    Coal Mining Corp., 
    151 F.3d 1096
    , 1104 (D.C. Cir. 1998). We
    must therefore examine Cumberland’s specific allegations and
    “determine whether a theoretical ‘reasonable factfinder’ could
    have reached the conclusions actually reached by the
    Commission and the ALJ.” 
    Id.
     (quoting United Steelworkers of
    America v. NLRB, 
    983 F.2d 240
    , 244 (D.C. Cir. 1993)).
    Applying this “highly deferential standard,” we conclude that
    the Commission’s decision rests on substantial evidence. Sec’y
    of Labor v. FMSHRC, 
    111 F.3d at 918
    .
    Cumberland argues that in finding that these violations
    were significant and substantial, the Commission refused to
    consider evidence of preventative measures that would have
    rendered both injuries from an emergency and the occurrence of
    an emergency in the first place less likely. Cumberland
    contends that in doing so, the Commission failed to consider all
    evidence including that which detracts from its position, and
    thus, its conclusion fails the substantial evidence test. See
    Universal Camera Corp. v. NLRB, 
    340 U.S. 474
    , 488 (1951);
    American Wrecking Corp. v. Sec’y of Labor, 
    351 F.3d 1254
    ,
    1261 (D.C. Cir. 2003) (“The substantial evidence rule requires
    that the Commission reasonably consider material evidence on
    both sides, as evidence that is substantial when viewed in
    isolation may become insubstantial when contradictory evidence
    is taken into account.”).
    17
    The first problem with Cumberland’s argument is that
    assuming the existence of an emergency in which a lifeline
    would be necessary also assumes an emergency in which all of
    the redundant safety measures Cumberland seeks to rely on have
    failed. The second problem is that consideration of redundant
    safety measures is inconsistent with the language of § 814(d)(1).
    As we have explained, the focus of the significant and
    substantial inquiry is the nature of the violation. “By focusing
    the decisionmaker’s attention on ‘such violation’ and its
    ‘nature,’ Congress has plainly excluded consideration of
    surrounding conditions that do not violate health and safety
    standards.” Sec’y of Labor v. FMSHRC, 
    111 F.3d at 917
    .
    Because redundant safety measures have nothing to do with the
    violation, they are irrelevant to the significant and substantial
    inquiry. Id.; see also Buck Creek Coal, Inc. v. FMSHA, 
    52 F.3d 133
    , 136 (7th Cir. 1995) (rejecting an argument that redundant
    safety measures detracted from a significant and substantial
    finding).
    Finally, Cumberland argues that the Commission’s
    significant and substantial findings are not supported by
    substantial evidence because “even assuming a hypothetical fire
    . . . , the evidence shows that it is not reasonably likely that such
    an event would result in a serious injury.” Petitioner’s Br. 46.
    As the Secretary points out, this objection misapprehends how
    the Mathies test applies. Under Mathies, the question is whether
    the hazard contributed to is reasonably likely to result in serious
    injury. 33 FMSHRC at 2366. Cumberland argues that
    substantial evidence does not support the conclusion that a
    hypothetical mine fire would be reasonably likely to result in
    serious injury, but the hazard here is not a hypothetical mine
    fire—it is delayed escape from one. Putting that aside, a review
    of the record demonstrates that substantial evidence does in fact
    support the Commission’s conclusions.
    18
    Whitehair’s testimony, which the ALJ accepted,
    provided a sufficient basis upon which a reasonable factfinder
    could conclude that the lifeline violations at issue here would
    delay miners from escaping from an emergency and that such a
    delay would be reasonably likely to cause serious injuries or
    death.
    With respect to the December 6 violation, the evidence
    we set forth above in the discussion of the violations was
    credited by the ALJ and constitutes substantial evidence that the
    lifeline violation Whitehair identified in the No. 1 belt entry of
    the Five Butt East Longwall section contributed to the hazard of
    a miner being delayed or unable to escape during an emergency
    and that the hazard was reasonably likely to result in serious
    injury.
    Cumberland argues that in the event of a fire, miners
    were unlikely to be hurt because they could use the belt structure
    to guide them out of the mine and could use the waterline
    running along the belt as a directional indicator. That argument
    is unpersuasive. First, the record demonstrates that miners are
    trained to use lifelines in emergencies, and thus, even if they did
    think to use the belt structure or the waterlines, they would still
    be delayed as they first attempted to find and use the lifeline.
    Second, Whitehair testified that because the waterline and belt
    structure lacked the lifeline’s required directional indicators, “it
    would be very easy [for miners] to become confused and maybe
    turn around and go the wrong direction, because it’s not going
    to tell them what direction they are going.”                 Third,
    Cumberland’s argument ignores another lifesaving advantage an
    adequate lifeline would have over a cable or waterline: lifelines
    are designed to guide miners to alternative refuges, and
    waterlines and cables are not. Therefore, the Commission’s
    findings were reasonable, and under the substantial evidence
    19
    standard of review, we must accept them. See Keystone Coal
    Mining Corp., 151 F.3d at 1104.
    Again, without rehashing the evidence set forth above,
    the same conclusion follows with respect to each of the other
    three violations. The Commission’s decision rested on
    substantial evidence. We therefore reject Cumberland’s
    evidentiary objection and must deny its petition.
    While Cumberland advances other arguments, none
    warrant further discussion.
    CONCLUSION
    Because the Commission applied the correct significant
    and substantial standard, and because substantial evidence
    supports each of the significant and substantial determinations
    in question, the petition for review is denied.
    So ordered.