Energy W. Mining Co. v. Lyle Ex Rel. Lyle , 929 F.3d 1202 ( 2019 )


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  •                                                                   FILED
    United States Court of Appeals
    PUBLISH                      Tenth Circuit
    UNITED STATES COURT OF APPEALS                July 9, 2019
    Elisabeth A. Shumaker
    FOR THE TENTH CIRCUIT                 Clerk of Court
    _________________________________
    ENERGY WEST MINING
    COMPANY,
    Petitioner,
    No. 18-9537
    v.
    JOANN H. LYLE, on behalf of
    JAMES E. LYLE; DEPARTMENT
    OF LABOR,
    Respondents.
    _________________________________
    Petition for Review from an Order of the Benefits Review Board
    (Benefits No. 13-05233 BLA)
    _________________________________
    William S. Mattingly, Jackson Kelly PLLC, Lexington, Kentucky, for
    Petitioner.
    Victoria S. Herman (Joseph E. Wolfe, with her on the brief), Norton,
    Virginia, for Joann H. Lyle, Respondent.
    Edward Waldman, Attorney, Department of Labor (Kate S. O’Scannlain,
    Solicitor of Labor; Kevin Lyskwoski, Acting Associate Solicitor; Gary K.
    Stearman, Counsel for Appellate Litigation; and Ann Marie Scarpino,
    Attorney, Department of Labor, on the brief), Washington, D.C., for
    Department of Labor, Respondent.
    _________________________________
    Before TYMKOVICH, Chief Judge, and BACHARACH and MORITZ,
    Circuit Judges.
    _________________________________
    BACHARACH, Circuit Judge.
    _________________________________
    Mr. James Lyle worked as a coal miner for roughly 28 years. After
    retiring, he sought benefits under the Black Lung Benefits Act. See 
    30 U.S.C. § 901
     et seq. An administrative law judge concluded that Mr. Lyle
    was entitled to benefits, and the U.S. Department of Labor’s Benefits
    Review Board affirmed. Energy West has filed a petition for review of the
    Board’s decision.
    We reject most of Energy West’s arguments but agree with its
    challenge to the administrative law judge’s analysis of an opinion by Dr.
    Joseph Tomashefski, Jr. In this analysis, the judge discounted Dr.
    Tomashefski’s medical opinion for a reason unsupported by the record. We
    thus vacate the award of benefits 1 and remand to the Board for
    reconsideration of Dr. Tomashefski’s opinion.
    I.   Because Energy West did not invoke the Appointments Clause in
    proceedings before the Benefits Review Board, we lack
    jurisdiction to consider the validity of the administrative law
    judge’s appointment.
    Energy West argues that the administrative law judge lacked
    authority to award benefits because he
         was subject to the Constitution’s Appointments Clause and
    1
    During the pendency of this appeal, Mr. Lyle died, resulting in
    substitution of his surviving spouse as the respondent.
    2
         was not properly appointed under this clause. 2
    But Energy West admittedly did not present this challenge to the Benefits
    Review Board.
    Energy West contends that the Benefits Review Board couldn’t have
    remedied the problem by appointing an administrative law judge. 3 But the
    Board could have remedied a violation of the Appointments Clause by
    vacating the administrative law judge’s decision and remanding for
    reconsideration by a constitutionally appointed officer. See, e.g., Miller v.
    Pine Branch Coal Sales, Inc., BRB No. 18-0323 BLA, 
    2018 WL 8269864
    (Oct. 22, 2018) (per curiam) (en banc) (granting this relief). Given the
    availability of a remedy, Energy West needed to present this challenge to
    the Benefits Review Board. Energy West didn’t, precluding our exercise of
    jurisdiction over the issue. See Big Horn Coal Co. v. Sadler, 
    924 F.3d 1317
    , 1325–26 (10th Cir. 2019) (holding that we lacked jurisdiction to
    2
    Under this clause, “Officers of the United States” must be appointed
    by the President, courts, or department heads. U.S. Const. art II, § 2, cl. 2.
    The Supreme Court has held that the SEC’s administrative law judges are
    “Officers of the United States” subject to the clause. Lucia v. SEC, 
    138 S. Ct. 2044
    , 2055 (2018).
    3
    For this argument, Energy West relies on Jones Bros., Inc. v. Sec’y of
    Labor, 
    898 F.3d 669
     (6th Cir. 2018), which addressed a provision specific
    to the Federal Mine Safety and Health Amendments Act of 1977, Pub. L.
    No. 95-164, 
    91 Stat. 1290
    . Our case does not concern that statute.
    3
    consider an argument that the petitioner had not presented to the Benefits
    Review Board); McConnell v. Dir., Office of Workers’ Comp. Programs,
    U.S. Dep’t of Labor, 
    993 F.2d 1454
    , 1460 n.8 (10th Cir. 1993) (concluding
    that the petitioner’s “failure to raise [an] argument with the [Benefits
    Review] Board ‘constitutes failure to exhaust administrative remedies and
    deprives the Court of Appeals of jurisdiction to hear the matter’” (quoting
    Rivera-Zurita v. I.N.S., 
    946 F.2d 118
    , 120 n.2 (10th Cir. 1991))). 4
    II.   We reverse the administrative law judge’s award of benefits
    based on an error in discounting Dr. Tomashefski’s opinion.
    The administrative law judge concluded that Mr. Lyle was entitled to
    benefits under the Black Lung Benefits Act. Energy West challenges this
    conclusion, arguing in part that the judge erroneously discounted Dr.
    Tomashefski’s opinion on legal pneumoconiosis. We agree with this part of
    Energy West’s argument but reject its other arguments.
    A.    We engage in limited review of the agency’s determination.
    The Black Lung Benefits Act permits judicial review to determine
    whether
         the legal conclusions of the agency are rational and consistent
    with the law and
    4
    In Big Horn, we observed that “[t]here may be some question about
    the long-term viability of McConnell describing the exhaustion
    requirement as jurisdictional in light of subsequent Supreme Court
    authority.” 924 F.3d at 1325. But we added that McConnell remains
    binding precedent. Id. at 1326.
    4
         substantial evidence supports the agency’s factual findings.
    Spring Creek Coal Co. v. McLean, 
    881 F.3d 1211
    , 1217 (10th Cir. 2018).
    We engage in de novo review of the administrative law judge’s legal
    conclusions and consider whether substantial evidentiary support exists for
    his factual findings. 
    Id.
    Evidence is substantial if a reasonable person might view it “as
    adequate to support a conclusion.” Consol. Edison Co. of N.Y. v. N.L.R.B.,
    
    305 U.S. 197
    , 229 (1938). We do not reweigh the evidence; we instead ask
    whether the administrative law judge’s determination is supported by
    substantial evidence. Antelope Coal Co./Rio Tinto Energy Am. v. Goodin,
    
    743 F.3d 1331
    , 1341 (10th Cir. 2014). The task of evaluating medical
    evidence lies solely with the administrative law judge, who is ideally
    positioned to assess credibility and balance conflicting evidence.
    Rockwood Cas. Ins. Co. v. Dir., Off. of Workers’ Comp. Programs, U.S.
    Dep’t of Labor, 
    917 F.3d 1198
    , 1214 (10th Cir. 2019).
    B.    If a miner worked in a coal mine for at least fifteen years
    and becomes disabled from a respiratory or pulmonary
    impairment, a rebuttable presumption would support an
    award of benefits.
    The Black Lung Benefits Act provides benefits to coal miners who
    become disabled from pneumoconiosis (commonly known as black-lung
    disease) arising from coal-mine employment. Goodin, 743 F.3d at 1335. To
    be eligible for benefits, a miner must establish four elements:
    5
    1.       Disease: The miner suffers from pneumoconiosis.
    2.       Disease causation: The pneumoconiosis arose out of coal-
    mine employment.
    3.       Disability: The miner is totally disabled because of a
    respiratory or pulmonary impairment.
    4.       Disability causation: The pneumoconiosis substantially
    contributes to the miner’s total disability.
    Energy West Mining Co. v. Estate of Blackburn, 
    857 F.3d 817
    , 821 (10th
    Cir. 2017).
    But if a miner has worked in a coal mine for at least fifteen years and
    establishes the disability element, we would presume satisfaction of the
    remaining three elements. 
    Id. at 822
    ; see 
    30 U.S.C. § 921
    (c)(4); 
    20 C.F.R. § 718.305
    (b)–(c). The burden would then shift to the employer to rebut the
    presumption on at least one of the three remaining elements. Estate of
    Blackburn, 857 F.3d at 822; see 
    30 U.S.C. § 921
    (c)(4); 
    20 C.F.R. § 718.305
    (d).
    Applying this burden-shifting framework, the administrative law
    judge concluded that
            the presumption applied because Mr. Lyle had worked in a coal
    mine for at least fifteen years and had established the disability
    element and
            Energy West had not rebutted the presumption.
    6
    Energy West concedes that Mr. Lyle worked in a coal mine for at
    least fifteen years. But Energy West challenges the evidentiary support for
    the administrative law judge’s findings regarding
         a total disability from a respiratory or pulmonary impairment
    and
         a failure to rebut the presumption of legal pneumoconiosis.
    C.    The disability element: Substantial evidence supports the
    administrative law judge’s finding of a total disability from
    a respiratory or pulmonary impairment.
    To establish the disability element, a coal miner must prove a total
    disability from a respiratory or pulmonary impairment. Energy West
    Mining Co. v. Estate of Blackburn, 
    857 F.3d 817
    , 821 (10th Cir. 2017).
    Miners are considered “totally disabled” if the pulmonary or respiratory
    impairment prevents them from performing
         their customary coal-mine work and
         other jobs in the community that require skills resembling those
    used in the prior coal-mine work.
    
    20 C.F.R. § 718.204
    (b)(1).
    “In the absence of contrary probative evidence,” certain types of
    evidence “shall” establish the disability element. 
    20 C.F.R. § 718.204
    (b)(2). Such evidence includes
         arterial blood-gas studies and
    7
         medical-opinion evidence regarding the impact of a pulmonary
    or respiratory impairment on a miner’s employment. 5
    
    20 C.F.R. § 718.204
    (b)(2)(ii), (iv).
    Arterial blood-gas studies gauge the lungs’ ability to oxygenate the
    blood. Rockwood Cas. Ins. Co. v. Dir., Off. of Workers’ Comp. Programs,
    U.S. Dep’t of Labor, 
    917 F.3d 1198
    , 1209 (10th Cir. 2019). For an arterial
    blood-gas study to establish the disability element, the results must show
    that the blood’s oxygen-pressure level dipped below the regulatory
    threshold. See 20 C.F.R. pt. 718, App. C.
    The regulatory threshold varies based on
         the altitude where the study is conducted and
         the carbon-dioxide pressure level of the miner’s blood.
    See 
    id.
     For example, if the study is conducted between 3,000 and 5,999
    feet above sea level, a miner with a carbon-dioxide pressure level of 26
    should have an oxygen-pressure level exceeding 69; if the oxygen-pressure
    level of the miner’s blood is 69 or below, the oxygen-pressure level would
    be considered too low, indicating a “total disability.” 
    Id.
    5
    Evidence establishing the disability element also includes
         pulmonary function tests and
         medical evidence of cor pulmonale with right-sided congestive
    heart failure.
    
    20 C.F.R. § 718.204
    (b)(2)(i), (iii).
    8
    If an arterial blood-gas study yields qualifying values, the
    administrative law judge must find a total disability “in the absence of
    rebutting evidence.” Id.; see Regulations Implementing the Byrd
    Amendments to the Black Lung Benefits Act: Determining Coal Miners’
    and Survivors’ Entitlement to Benefits, 
    77 Fed. Reg. 19456
    , 19464 (Mar.
    30, 2012) (“A test that produces ‘qualifying’ values is deemed, in the
    absence of contrary evidence, indicative of a totally disabling respiratory
    or pulmonary impairment.”).
    Applying the regulatory thresholds, the administrative law judge
    concluded that Mr. Lyle had established the disability element based on
         arterial blood-gas studies in 2011 and 2012 and
         a written report by Dr. Shane Gagon after examining Mr. Lyle.
    As the judge explained, the arterial blood-gas studies in 2011 and 2012
    showed qualifying values under the applicable regulations. In his report,
    Dr. Gagon opined that
         Mr. Lyle had a mild-to-moderate respiratory or pulmonary
    impairment and
         chronic bronchitis was the primary contributor to Mr. Lyle’s
    impairment. 6
    6
    In his report, Dr. Gagon also opined that the impairment had caused
    abnormal blood-gas levels and shortness of breath when Mr. Lyle walked
    less than half a mile.
    9
    In arriving at these opinions, Dr. Gagon relied partly on the 2011 arterial
    blood-gas study. According to Dr. Gagon, this study showed “abnormal
    blood gases.” Joint App’x at 12.
    Energy West argues that the administrative law judge
         erroneously discounted three medical opinions stating that Mr.
    Lyle’s level of oxygen pressure was normal,
         mistakenly credited Dr. Gagon’s written report over his
    deposition testimony,
         failed to weigh the significance of a third arterial blood-gas
    study, and
         erroneously discounted Dr. Robert Farney’s opinion as to a
    total disability. 7
    7
    In addition, Energy West argues that the administrative law judge
    erred in discounting Dr. Tomashefski’s opinion on total disability. But this
    argument is not adequately developed. Energy West’s discussion of Dr.
    Tomashefski’s opinion focuses mostly on his opinion involving legal
    pneumoconiosis (rather than total disability). For example, Energy West
    does not discuss the administrative law judge’s reasons for discounting Dr.
    Tomashefski’s opinion as to the presence of a total disability. We thus
    decline to consider the administrative law judge’s assessment of this
    opinion.
    Energy West also argues that the Benefits Review Board erroneously
    added to the administrative law judge’s justification for discounting Dr.
    Tomashefski’s opinion as to a total disability. This argument does not
    support reversal. Our question is whether substantial evidence exists for
    the administrative law judge’s decision, and evidence presented to the
    administrative law judge was either substantial or it wasn’t. Our evaluation
    of that evidence is unaffected by the Benefits Review Board’s additional
    justifications for the administrative law judge’s decision. See Energy West
    Mining Co. v. Estate of Blackburn, 
    857 F.3d 817
    , 822 (10th Cir. 2017)
    (noting that we review decisions of the Benefits Review Board de novo and
    focus on the administrative law judge’s evaluation of the evidence).
    10
    We reject these arguments.
    Following the applicable regulations over contrary medical opinions.
    At his deposition, Dr. Gagon testified that the 2011 arterial blood-gas
    study had yielded normal results. Similarly, Dr. Farney testified at his
    deposition that the 2012 arterial blood-gas study had shown “blood gases”
    within “normal limits.” 
    Id. at 185
    . And Dr. Tomashefski opined in a
    written report that the 2011 and 2012 arterial blood-gas studies had shown
    oxygen pressure “in the low normal range” given the altitudes at the test
    sites. 
    Id. at 100
    .
    The administrative law judge rejected the doctors’ opinions because
    the arterial blood-gas studies had shown that Mr. Lyle’s oxygen-pressure
    level was too low under the applicable regulations. Energy West contends
    that the judge erred in rejecting the doctors’ opinions. We disagree.
    An agency must follow its own regulations. Cherokee Nation of Okla.
    v. Norton, 
    389 F.3d 1074
    , 1087 (10th Cir. 2004). The administrative law
    judge thus rejected inadequately supported medical opinions that conflicted
    with these regulations. See Rockwood Cas. Ins. Co. v. Dir., Off. of
    Workers’ Comp. Programs, U.S. Dep’t of Labor, 
    917 F.3d 1198
    , 1218–19
    (10th Cir. 2019) (upholding the administrative law judge’s decision to
    follow the applicable regulations over contrary medical testimony).
    Energy West contends that the administrative law judge should have
    discounted the results under the regulations in light of the contrary
    11
    opinions presented by Drs. Farney, Tomashefski, and Gagon. But the judge
    determined that these opinions were entitled to little probative weight, and
    this assessment was reasonable. Neither Dr. Gagon nor Dr. Tomashefski
    explained how he had assessed a normal oxygen-pressure level for Mr.
    Lyle. Dr. Farney was different, for he stated that he had relied on research
    by his colleagues. But Energy West did not submit this research to the
    agency or to us. 8 And none of the three doctors explained why they had
    deviated from the applicable regulations.
    Crediting Dr. Gagon’s written report and rejecting his deposition
    testimony. In his written report, Dr. Gagon opined that Mr. Lyle had a
    mild-to-moderate respiratory or pulmonary impairment primarily because
    of chronic bronchitis. See p. 9, above. But Dr. Gagon testified differently
    at his deposition, stating that Mr. Lyle had no pulmonary impairment that
    prevented a return to his most recent coal-mine work.
    The administrative law judge credited Dr. Gagon’s written report
    over his deposition testimony. Energy West contends that the
    administrative law judge failed to explain why he had credited the written
    report over the deposition testimony. We disagree.
    8
    At oral argument, Energy West pointed to a document that allegedly
    cites the research. The citation, however, is not self-explanatory and does
    not substitute for the research itself.
    12
    In relying on the written report, the administrative law judge noted
    that Dr. Gagon had
         examined Mr. Lyle before producing the report and
         relied on “objective medical evidence” for his “examination
    findings.”
    Joint App’x at 293. In considering the deposition testimony, the
    administrative law judge stated that Dr. Gagon had
         “contradicted” his own report without any explanation and
         stated that the 2011 arterial blood-gas study had shown a
    normal oxygen-pressure level even though that level had fallen
    below the regulatory thresholds.
    
    Id.
     With these statements, the administrative law judge adequately
    explained his decision to credit Dr. Gagon’s written report over his
    contrary deposition testimony.
    Failure to weigh a third arterial blood-gas study. Energy West
    argues that the administrative law judge failed to weigh a third arterial
    blood-gas study. 9 But Energy West concedes that it failed to present this
    argument to the Benefits Review Board. Energy West thus forfeited this
    argument, precluding our exercise of jurisdiction over this argument. See
    Part I, above.
    9
    In a footnote, the administrative law judge mentioned the results of
    the third study.
    13
    Discounting Dr. Farney’s opinion as to a total disability. Dr. Farney
    opined that Mr. Lyle was not totally disabled from a respiratory
    impairment, and the administrative law judge rejected this opinion. Energy
    West challenges this part of the decision. But Energy West did not present
    this challenge to the Benefits Review Board. We thus lack jurisdiction to
    consider the argument. See Part I, above.
    * * *
    The administrative law judge found that Mr. Lyle was totally
    disabled from a respiratory or pulmonary impairment. In making this
    finding, the administrative law judge considered all of the evidence and
    explained his conclusion. This explanation is supported by substantial
    evidence, so we uphold the judge’s finding of a total disability from a
    respiratory or pulmonary impairment.
    D.    The disease element: When deciding whether Energy West
    had rebutted the presumption on the disease element, the
    administrative law judge erroneously discounted Dr.
    Tomashefski’s opinion because of a perceived lack of
    explanation.
    Because Mr. Lyle had established the disability element and worked
    in a coal mine for at least fifteen years, the administrative law judge
    presumed satisfaction of the three remaining elements for black-lung
    benefits (disease, disease causation, and disability causation). Energy West
    Mining Co. v. Estate of Blackburn, 
    857 F.3d 817
    , 822 (10th Cir. 2017); see
    
    30 U.S.C. § 921
    (c)(4); 
    20 C.F.R. § 718.305
    (b)–(c). The burden then shifted
    14
    to Energy West to rebut the presumption on at least one of the three
    remaining elements. See Estate of Blackburn, 857 F.3d at 822; 
    30 U.S.C. § 921
    (c)(4); 
    20 C.F.R. § 718.305
    (d). On appeal, Energy West focuses on
    the disease element.
    To rebut the presumption on the disease element, an employer must
    show that a miner does not suffer from pneumoconiosis. See Estate of
    Blackburn, 857 F.3d at 821. The pneumoconiosis may be either “clinical”
    or “legal.” 
    20 C.F.R. § 718.201
    (a).
    This case involves legal pneumoconiosis, 10 which encompasses “any
    chronic lung disease or impairment and its sequelae arising out of coal
    mine employment.” 
    Id.
     § 718.201(a)(2). Diseases “arising out of coal mine
    employment” include “any chronic pulmonary disease or respiratory or
    pulmonary impairment significantly related to, or substantially aggravated
    by, dust exposure in coal mine employment.” Id. § 718.201(b).
    Given this definition, Drs. Farney and Tomashefski opined that Mr.
    Lyle did not have legal pneumoconiosis. The administrative law judge
    regarded the probative value of these opinions as minimal to none. 11
    10
    The administrative law judge concluded that Energy West had
    rebutted the presumption of clinical pneumoconiosis. None of the parties
    has questioned this conclusion.
    11
    When discussing Dr. Tomashefski’s opinion on legal
    pneumoconiosis, the administrative law judge referred once to the doctor’s
    15
    Energy West argues that the administrative law judge erred in
    discounting the opinions of Drs. Farney and Tomashefski. 12 We disagree
    with Energy West’s argument as to Dr. Farney and agree as to Dr.
    Tomashefski.
    Dr. Farney’s opinion on legal pneumoconiosis. The administrative
    law judge concluded that Dr. Farney’s opinion on legal pneumoconiosis
    had no probative value. 13 For this conclusion, the administrative law judge
    gave four reasons:
    1.    Internal inconsistency: In his written report, Dr. Farney agreed
    with Dr. Fernando Rodriguez’s assessment of a CT scan. Dr.
    Rodriguez had opined that this CT scan showed signs of
    obstructive pulmonary disease. But Dr. Farney opined that he
    could not diagnose Mr. Lyle with emphysema because of a lack
    of evidence involving obstructive pulmonary disease.
    2.    Misunderstanding of Mr. Lyle’s actual work: Dr. Farney based
    his opinion partly on a belief that Mr. Lyle had worked in
    conclusion on clinical pneumoconiosis. The reference to clinical
    pneumoconiosis was apparently a mistake.
    12
    Energy West also argues that the administrative law judge erred in
    discounting Dr. Farney’s opinion on clinical pneumoconiosis. But the
    administrative law judge concluded that Energy West had rebutted the
    presumption of clinical pneumoconiosis, and no party has challenged this
    conclusion. See note 10, above. Thus, even if we were to conclude that the
    administrative law judge had erred in discounting Dr. Farney’s opinion on
    clinical pneumoconiosis, the error would have been harmless. See
    Gunderson v. U.S. Dep’t of Labor, 
    601 F.3d 1013
    , 1021 (10th Cir. 2010).
    13
    The administrative law judge had earlier stated that Dr. Farney’s
    opinion on legal pneumoconiosis was entitled to “minimal probative
    value.” Joint App’x at 301. Ultimately, however, the administrative law
    judge gave no weight to the opinion.
    16
    mines primarily when coal was not being extracted. But Mr.
    Lyle had spent 23 of his 28 years working in mines while coal
    was being extracted.
    3.    Infrequency of coal workers’ pneumoconiosis in the western
    states: Dr. Farney based his opinion in part on a belief that coal
    workers’ pneumoconiosis is relatively infrequent in the western
    United States. 14 But data on the general prevalence of coal
    workers’ pneumoconiosis did not explain whether Mr. Lyle was
    among the small group of western miners affected by exposure
    to coal dust.
    4.    Failure to explain the preclusive effect of a diagnosis of usual
    interstitial pneumonia: At his deposition, Dr. Farney testified
    that he had not diagnosed pneumoconiosis because he believed
    that Mr. Lyle’s symptoms were consistent with usual interstitial
    pneumonia, which is not caused by exposure to coal dust. But
    Dr. Farney did not explain why a diagnosis of usual interstitial
    pneumonia precluded a diagnosis of legal pneumoconiosis.
    Energy West challenges the administrative law judge’s first three
    reasons for discounting Dr. Farney’s opinion on legal pneumoconiosis. 15
    We reject these challenges.
    First, Energy West argues that Dr. Farney’s deposition testimony
    explained his reasoning concerning obstructive lung disease. But when Dr.
    Farney testified about the CT scan, he relied on Dr. Christopher Meyer’s
    interpretation (rather than Dr. Rodriguez’s). So Dr. Farney never explained
    the discrepancy between his opinions that
    14
    Coal workers’ pneumoconiosis is a type of clinical pneumoconiosis.
    
    20 C.F.R. § 718.201
    (a)(1).
    15
    Energy West does not challenge the fourth reason on appeal and
    didn’t do so in its appeal to the Benefits Review Board.
    17
         Mr. Lyle didn’t have obstructive pulmonary disease and
         the CT scan showed air trapping consistent with obstructive
    pulmonary disease.
    Second, Energy West argues that the administrative law judge failed
    to consider the relevance of Mr. Lyle’s history of working when coal
    wasn’t being extracted. The judge did not conclude that this history was
    irrelevant; rather, he concluded that (1) Dr. Farney had misunderstood Mr.
    Lyle’s employment history and (2) this misunderstanding had undercut Dr.
    Farney’s opinion.
    Energy West argues that Dr. Farney knew that Mr. Lyle (1) had
    worked as a coal miner for nearly three decades and (2) had worked most
    recently as a belt installer. For the sake of argument, let’s assume that
    Energy West is correct. Even with this knowledge, Dr. Farney appears to
    have mistakenly thought that Mr. Lyle spent most of his mining career
    working when the coal was not being extracted. 16
    16
    Dr. Farney stated:
    His total years of work in the coal industry was almost 30 years,
    all of which was spent underground at or near the face. Based
    upon this duration he would appear to have a substantial risk for
    developing pulmonary disease related to coal dust exposure.
    However, his job was consistently performed during the “down
    shift” from 11:00 PM until 9:00 AM at which time coal
    extraction was not being performed. His duties involved repair
    and maintenance of equipment which may have created some
    dust exposure but this would be considerably less than during
    active mining.
    18
    Lastly, Energy West argues that the administrative law judge erred
    by discounting Dr. Farney’s opinion based on his reliance on the
    prevalence of coal workers’ pneumoconiosis in the western United States.
    In discounting this opinion, the administrative law judge relied on
    Antelope Coal Co./Rio Tinto Energy Am. v. Goodin, 
    743 F.3d 1331
     (10th
    Cir. 2014). Energy West argues that this reliance was misguided. We
    disagree. Goodin is relevant and supports the administrative law judge’s
    decision to discount Dr. Farney’s opinion.
    In Goodin, another administrative law judge discounted an opinion
    by Dr. Farney, reasoning that he had relied on “statistical probabilities”
    without explaining why a specific miner didn’t suffer from legal
    pneumoconiosis. Goodin, 743 F.3d at 1345–46. We upheld the
    administrative law judge’s reasoning for his decision to discount Dr.
    Farney’s opinion. See id. at 1346.
    Our discussion in Goodin applies here. Dr. Farney has again relied on
    statistical probabilities. Under Goodin, the administrative law judge could
    reasonably fault Dr. Farney for failing to explain why Mr. Lyle wasn’t
    among the miners in the western United States suffering legal
    pneumoconiosis from exposure to coal dust.
    Joint App’x at 27. But the administrative law judge found that for 23 years,
    Mr. Lyle had worked “during actual coal mine extraction.” Id. at 302.
    19
    Dr. Tomashefski’s opinion on legal pneumoconiosis. The
    administrative law judge concluded that Dr. Tomashefski’s opinion was
    entitled to “no probative value.” Joint App’x at 303. Dr. Tomashefski
    acknowledged that Mr. Lyle suffered from constrictive bronchiolitis and
    interstitial fibrosis, but opined that these diseases were unconnected to Mr.
    Lyle’s decades of coal-dust exposure. According to the administrative law
    judge, Dr. Tomashefski failed to explain why those diseases were unrelated
    to coal-dust exposure.
    At his deposition, however, Dr. Tomashefski was asked why he
    believed that coal-dust exposure hadn’t caused Mr. Lyle’s constrictive
    bronchiolitis and interstitial fibrosis. Dr. Tomashefski answered:
    Well, let’s start with the constrictive bronchiolitis. In the
    first place, coal dust, when it affects the small airways, produces
    what I refer to as a coal macule, not constrictive bronchiolitis.
    The changes of constrictive bronchiolitis are much different
    from the coal macule, and furthermore, there was no histologic
    evidence of dust deposition in those airways that were
    constricted.
    And then if we move to the interstitial fibrosis, it’s the
    same thing, that the pattern of interstitial fibrosis did not qualify
    as pneumoconiosis, and although coal mine dust can cause
    interstitial fibrosis, to make that diagnosis, you need to see
    deposition of pigment and mineral particles significantly present
    in the areas of interstitial fibrosis. That was not seen here.
    Id. at 151.
    In finding that Dr. Tomashefski had not explained his conclusion that
    the diseases were unrelated to coal-dust exposure, the administrative law
    20
    judge apparently overlooked this deposition testimony. In this excerpt, Dr.
    Tomashefski explained why he believed that exposure to coal dust hadn’t
    contributed to Mr. Lyle’s chronic bronchiolitis or interstitial fibrosis. The
    judge might have had reasons to disagree, but he couldn’t simply deny the
    existence of any explanation. See Peabody Coal Co. v. Helms, 
    859 F.2d 486
    , 490–91 (7th Cir. 1988) (reversing because the administrative law
    judge erroneously regarded a physician’s opinion on causation as
    equivocal); see also Hamlin v. Barnhart, 
    365 F.3d 1208
    , 1218–20 (10th
    Cir. 2004) (reversing the denial of Social Security benefits because the
    administrative law judge had erroneously regarded a physician’s opinion as
    conclusory). By relying solely on the lack of any explanation, the
    administrative law judge erred.
    * * *
    The administrative law judge discounted Dr. Tomashefski’s opinion
    on legal pneumoconiosis for failing to explain why he had concluded that
    coal-dust exposure had not caused Mr. Lyle’s respiratory or pulmonary
    disease. But Dr. Tomashefski did explain this opinion. Because the judge’s
    explanation is unsupported, we grant Energy West’s petition for review,
    vacate the administrative law judge’s award of benefits, and remand the
    21
    matter to the Benefits Review Board to reconsider Dr. Tomashefski’s
    opinion on the cause of legal pneumoconiosis. 17
    17
    On remand, the Board has discretion to remand to an administrative
    law judge to reconsider Dr. Tomashefski’s opinion.
    22