                            __________

                            No. 95-1645
                             __________

Associated Electric Cooperative,*
Inc.,                           *
                                *
          Petitioner,           *   On Petition For Review of a
                                *   Decision and Order of the
     v.                         *   Benefits Review Board, United
                                *   States Department of Labor.
Clarence Hudson and Director,   *
Office of Workers' Compensation *
Programs, United States         *
Department of Labor,            *
                                *
          Respondents.          *

                            __________

                    Submitted:    September 15, 1995


                         Filed:   January 19, 1996
                             __________

Before FAGG, BEAM*, and MURPHY, Circuit Judges.
                            __________


MURPHY, Circuit Judge.



     Associated Electric Cooperative, Inc. (AEC) appeals from a
decision of the Benefit Review Board of the Department of Labor
(BRB) affirming an award of benefits by an Administrative Law Judge
(ALJ) to Clarence Hudson under the Black Lung Benefits Act, 30
U.S.C. §§ 901-945. We find that substantial evidence supports the
ALJ's decision and therefore affirm the board's decision.


     *
      The Honorable Frank J. Magill was originally assigned to
hear this case, but he subsequently withdrew, and the Honorable
C. Arlen Beam was substituted.
                                I.


     Hudson worked at coal mines for 44 years until retiring in
1985 at the age of 68. He served as a shovel operator at AEC for
the last five years, which included picking stones, oiling the
dryer, driving a truck in a surface mine, and operating a drag
line. Hudson also smoked one pack of cigarettes a day for 15 to 20
years until age 40.    He began suffering breathing difficulties
several years before his retirement, which ultimately prevented him
from performing the more strenuous parts of his job, such as
repairing machines and climbing the boom to oil it.


     On April 8, 1985, Hudson filed for benefits under the Black
Lung Benefits Act claiming total disability due to coal miner's
pneumoconiosis (black lung disease). Nearly four years later, in
March 1989, Administrative Law Judge Robert S. Amery awarded him
benefits after a hearing.      The ALJ based his decision on a
diagnosis of pneumoconiosis by Dr. Kuldeep Singh and Dr. Rolf E.
Gryte. Dr. Singh was Hudson's personal physician and regularly saw
him twice a month for his breathing problems.      He diagnosed a
severe obstructive lung disease caused by coal dust exposure after
two physical examinations, two qualifying pulmonary function tests
(pfts), and an evaluation of his medical and work histories. Dr.
Gryte similarly concluded that Hudson's coal dust exposure caused
pneumoconiosis. His opinion was based on a physical examination,
two qualifying pfts, two chest x-rays that were positive for
pneumoconiosis, and Hudson's work, smoking, and medical histories.



     The ALJ did not find controlling the opinions of two pulmonary
specialists, Drs. Peter G. Tuteur and Sheldon R. Braun.         Dr.
Tuteur's opinion was given less weight because he did not
personally examine Hudson, but relied solely on other medical
reports and tests. Dr. Tuteur admitted that Hudson's exposure to
coal mine dust and certain medical data were consistent with

                                2
pneumoconiosis, but concluded that his permanent disability was
caused by heart disease and smoking. He also invalidated Hudson's
pfts as lacking in effort and as having results inconsistent with
two nonqualifying arterial blood gas studies. Dr. Braun likewise
found that Hudson had a restrictive and obstructive lung disease
and   definite   coal  exposure   which   were  compatible   with
pneumoconiosis. Because Hudson's chest x-ray was normal, however,
Dr. Braun attributed his problems to emphysema.


     On appeal, the BRB affirmed the ALJ's finding that Hudson had
a total disability, but remanded to determine if there was
sufficient evidence that pneumoconiosis was a contributing cause.
The ALJ reaffirmed his decision in September 1991. The ALJ first
found that the reports of Drs. Singh, Gryte, and Braun were
sufficiently documented and reasoned. Although the positive x-ray
taken by Dr. Gryte had been reread as negative, the ALJ concluded
that this was not controlling in light of the thorough physical
examinations by both Dr. Gryte and Dr. Singh, Hudson's treating
physician.   The ALJ considered that two of the three examining
doctors had diagnosed pneumoconiosis and that Hudson could no
longer return to his previous mining work, and he concluded that
pneumoconiosis was a contributing cause of Hudson's total
disability.


     The BRB affirmed the ALJ's decision in July 1993.         It
concluded that the ALJ had weighed all the evidence and possible
causes of Hudson's health problems before determining that he was
totally disabled due to pneumoconiosis.


     Appellant AEC does not dispute that Hudson is totally disabled
from coal mine employment, but it argues that the ALJ incorrectly
determined that this disability resulted from pneumoconiosis. We
have jurisdiction pursuant to 33 U.S.C. § 921(c) as incorporated by
30 U.S.C. § 932(a); see Brown v. Director, O.W.C.P., U.S. Dept. of
Labor, 914 F.2d 156, 157 (8th Cir. 1990).

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                               II.


     The Black Lung Benefits Act compensates individuals who prove
by a preponderance of the evidence that they are "totally disabled
due to pneumoconiosis arising out of employment" in a coal mine.
30 U.S.C. § 901(a); see Mullins Coal Co. v. Director, O.W.C.P., 108
S.Ct. 427, 441 n.35 (1987). Hudson's claim was filed after March
31, 1980, and is therefore controlled by 20 C.F.R. §§ 718.1-
718.404. See 20 C.F.R. § 718.2.


     Under the controlling     provisions,   a   determination   of
pneumoconiosis may be made


     if a physician, exercising sound medical judgment, not
     withstanding a negative X-ray, finds that the miner suffers or
     suffered from pneumoconiosis . . . based on objective medical
     evidence such as blood-gas studies, electrocardiograms,
     pulmonary function studies, physical performance tests,
     physical examination, and medical and work histories. Such a
     finding shall be supported by a reasoned medical opinion.


20 C.F.R. § 718.202(a)(4). Because Hudson worked as a miner for
more than 10 years, there is a rebuttable presumption that the
pneumoconiosis arose out of coal mine employment.     20 C.F.R.
§ 718.203(b).


     One focus for this court is whether the BRB properly adhered
to its standard of review. Brown, 914 F.2d at 158. The BRB may
not undertake a de novo review of the evidence or substitute its
views for that of the administrative law judge.        Parker v.
Director, Office of Workers' Compensation, 590 F.2d 748, 749 (8th
Cir. 1979). Instead, it must uphold an ALJ's findings if they are
rational, supported by substantial evidence, and consistent with
applicable law. Id.; 33 U.S.C. § 921(b)(3).


     Substantial evidence is "not necessarily a preponderance of
the evidence, but it is more than a scintilla . . . [that which] a

                                4
reasonable mind might accept as adequate to support a particular
conclusion with reference to the evidence as a whole." Parker, 590
F.2d at 749; see also Richardson v. Perales, 94 S.Ct. 1420, 1427
(1971). So long as there is substantial evidence, it is immaterial
that the facts permit the drawing of diverse inferences or that
this court might have reached a different result in the first
instance. Parker, 590 F.2d at 749; Brown, 914 F.2d at 158. It is
likewise up to the finder of fact to decide as a matter of
credibility whether a physician's report is sufficiently documented
and reasoned. Phillips v. Director, O.W.C.P., 768 F.2d 982, 984
(8th Cir. 1985).      A reasoned medical judgment represents a
physician's professional judgement "as to the most likely cause
among the possible causes of the physical condition involved."
Brazzalle v. Director, Office of Worker's Comp., 803 F.2d 934, 936
(8th Cir. 1986).


     Applying these standards and after examination of the facts
contained in the record, we conclude that the ALJ's findings, as
affirmed by the BRB, were supported by substantial evidence and
were not inconsistent with the law. The ALJ properly weighed all
the medical reports and opinions before him to determine that
Hudson's total disability resulted from pneumoconiosis due to coal
mining.


     The ALJ considered and rejected two x-rays which had been read
as positive for pneumoconiosis by Dr. Gryte, but which were later
reread as negative by more expert physicians.        See 20 C.F.R.
§ 718.202(a)(1) (consideration shall be given to the radiological
qualifications of the interpreting physicians in cases of dispute);
Mullins Coal Co., 108 S.Ct. at 434 (specialist's x-ray
interpretation may be more persuasive than that of a less qualified
reader). The Act does not require positive x-rays, however, and
the ALJ did not find the negative x-rays dispositive.           See
§ 718.202(a)(4); § 718.202(b) ("[n]o claim for benefits shall be
denied solely on the basis of a negative chest x-ray"); Worhach v.

                                5
Director, O.W.C.P., 1993 WL 172281 at *3 (Ben.Rev.Bd. 1993) (a
medical report can establish the existence of pneumoconiosis
regardless of the x-ray evidence).


     The   ALJ   next   considered   whether   the   diagnoses   of
pneumoconiosis by Drs. Singh and Gryte were sufficiently documented
and reasoned.     Dr. Singh based his opinion on two physical
examinations and qualifying pfts, in addition to Hudson's medical
and work histories.    Although Dr. Tuteur and another pulmonary
specialist regarded the pfts as internally inconsistent and lacking
in effort, Dr. Singh noted that Hudson exerted good effort on the
second qualifying pft.    Dr. Singh concluded that Hudson had a
severe obstructive lung disease caused by coal dust exposure which
prevented Hudson from performing his previous mining work. Because
Dr. Singh regularly treated Hudson for his breathing problems at
least twice a month, the ALJ had discretion to assign more weight
to his opinion. See Ward v. Heckler, 786 F.2d 844, 866 (8th Cir.
1986) (a treating physician's opinion is ordinarily entitled to
greater weight than that by a consulting physician in the context
of a disability determination).


     Dr. Gryte reached similar conclusions to Dr. Singh after his
physical examination, two qualifying pfts, and two positive chest
x-rays.   He concluded that Hudson's cardiopulmonary impairment
limited his movements to walking one block, climbing one flight of
stairs, and lifting thirty pounds. Although AEC again complains
that Hudson exerted poor effort on the pfts that Dr. Gryte
administered, Dr. Gryte noted on both of these pft reports that
Hudson had shown good cooperation and ability to follow directions.
Given that it is the physician's function to interpret medical
data, the ALJ did not err in deciding that Dr. Gryte's report was
sufficiently documented and reasoned. See Schetroma v. Director,
O.W.C.P., 1993 WL 469254 at *3 (Ben.Rev.Bd. 1993) (medical experts
and not the ALJ should interpret medical data). We therefore find
that the ALJ properly credited the reports of Drs. Singh and Gryte.

                                6
     Contrary to AEC's suggestion, the ALJ did not ignore the other
medical evidence in this case. He noted that Hudson had undergone
heart surgery and had been diagnosed with coronary heart disease in
February 1984, but that the reporting doctor had not expressed an
opinion as to the possibility of pneumoconiosis at the time. The
ALJ also considered the report of Dr. Braun to be well documented
and reasoned, even though he had diagnosed emphysema instead of
pneumoconiosis.   After a physical examination, Dr. Braun found
that Hudson's clear pulmonary impairment, definite coal exposure,
and restrictive and obstructive lung disease would all be
compatible with pneumoconiosis if his x-ray result had been
abnormal. The ALJ was entitled to consider this statement when
evaluating Dr. Braun's final assessment.


     The ALJ likewise did not ignore Dr. Tuteur's opinion that
Hudson did not have pneumoconiosis, but rather decided to assign it
less weight because he had not personally examined Hudson. See
Wilt v. Wolverine Mining Co., 1990 WL 284127 at *6 (Ben.Rev.Bd.
1990).   Indeed, the ALJ's first opinion detailed Dr. Tuteur's
conclusions and also summarized his deposition testimony. Like Dr.
Braun, Dr. Tuteur conceded that some of Hudson's medical data was
consistent with pneumoconiosis and that his coal dust exposure was
sufficient to produce pneumoconiosis. Dr. Tuteur concluded that
Hudson's symptoms were also consistent with heart disease and
smoking, however, which he believed were the primary causes of his
total disability.


     Finally, it can be seen that the ALJ gave some credence to the
opinions of Dr. Tuteur and a second pulmonary specialist that
Hudson's pfts were invalid in that he concluded that Hudson could
not establish a total disability based solely on the pft results.1

     1
      Total disability was established by Dr. Singh's conclusion
that Hudson could not perform coal mine or comparable work, Dr.
Gryte's assessment of Hudson's physical limitations, and Dr.
Tuteur's statement that Hudson was permanently and totally

                                7
The fact that the pfts alone were insufficient to establish a total
disability does not contradict the ALJ's separate findings that
Hudson suffered from pneumoconiosis and that it was a contributing
cause of his total disability.           In making these latter
determinations, the ALJ properly reconsidered and reweighed all the
evidence: Hudson's 44 years of work in coal mines, the reasoned
diagnosis of pneumoconiosis by Drs. Singh and Gryte, the medical
opinions that Hudson could no longer return to his previous mining
work, the opinions invalidating the pfts, negative arterial blood
gas studies, and all possible causes of Hudson's physical problems.
See 20 C.F.R. § 718.204(c). Based on the totality of the record,
it was within the ALJ's discretion as factfinder to conclude that
the weight of the evidence established that Hudson had
pneumoconiosis and that this was a contributing cause of his total
disability under 20 C.F.R. §§ 718.204(a)(4) and 718.204(b).


     Although there were conflicting medical opinions in this case,
Congress intended its black lung entitlement program to be
"liberally construed in favor of the miners to insure compensation
in worthy cases despite the extreme difficulty of proving
clinically certain medical evidence." Hudson v. Dept. of Labor,
851 F.2d 215, 217 n.3 (8th Cir. 1988). We find that this is such
a case given the substantial evidence supporting Hudson's claim.
Because the ALJ's findings were rational and his conclusions
consistent with applicable law, the BRB properly adhered to its
standard of review in affirming his decision. See Parker, 590 F.2d
at 749. Hudson is therefore entitled to the benefits he was first
awarded nearly six years ago. For these reasons, we affirm.




disabled. See 20 C.F.R. § 718.204(b) (a miner shall be
considered totally disabled if pneumoconiosis prevents the miner
from performing his usual coal mine work or comparable work).
Given the medical consensus on this point, AEC does not dispute
that Hudson is totally disabled.

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A true copy.


     Attest:


          CLERK, U.S. COURT OF APPEALS, EIGHTH CIRCUIT.




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