The rights of a coal miner to receive damages from his employer for pneumoconiosis (lung disease) are in dispute. The Administrative Law Judge (“ALJ”) granted respondent miner benefits. The Benefits Review Board (“Board”) affirmed this decision on appeal. Because we conclude that such relief was justified, we AFFIRM.

I. Facts and Background

Edward Allen (“Allen”) worked as a maintenance foreman and supervisor in a coal mine for Jim Walter Resources, Inc., (“JWR”) from early 1984 to early 1986. Allen experienced breathing difficulties towards the end of this time. JWR laid Alen off in March 1986. Alen had worked in the coal mining industry for 36 years.

Alen testified that he carried bags of rock dust and other heavy loads, and ran up to two miles a day. Alen explained that the air was always dusty because “it was an extremely gassy mine and it took a large volume of air to keep the gas swept out of the faces.... In order to get that much air to the face, the air picked the dust up out of the mine as it went along.” Tr. at 12. Alen claimed that his breathing of this coal dust, especially when exerting himself with heavy work, resulted in a disabling lung condition. Alen also said that his condition deteriorated towards the end of his employment.

Alen concedes that the union contract required other miners to perform some of the heavy work. Still, he contends that, in practice, he had to do this work so that his crew could complete its scheduled assignments: “we [Alen and the other foremen] weren’t supposed to do [the heavy work] but when it came right down to the bare facts we had to do [the heavy work].” Tr. at 23. The record indicates that other foremen were expected to perform similar heavy tasks and that Alen received good reviews from JWR management for his work.

Several doctors examined Alen from 1983 to 1988. In October 1983, Dr. Rasmussen found Allen suffering from a “moderate impairment in respiratory functional capacity as reflected by the impaired gas exchange at rest and during graded exercise.” (CX 2) In September 1986, Dr. Daniel determined that Alen suffered from coal workers’ pneu-moconiosis, but declared that Alen “should be able to perform [the] usual activities of a coal miner.” (DX 6) In November 1988, Dr. Rasmussen found a “moderate loss of respiratory function as reflected by the resting and exercise impairment in oxygen transfer and hypoxia.” (CX 1) Athough some of the tests were negative, three of Rasmussen’s arterial blood gas studies produced qualifying values when Alen was at rest. Dr. Rasmussen said that Allen would be “totally disabled for resuming his former coal mine employment with its attendant requirement for heavy manual labor.” (CX 1) 1

Several doctors also testified that Alen’s X-rays indicated the presence of pneumoconi-osis. Athough other X-ray readers disputed these findings, the ALJ determined that the X-rays, by themselves, established the existence of pneumoconiosis.

The ALJ concluded that Alen was totally disabled from resuming his coal mining work and was eligible for black lung disability benefits from employer JWR. The Board affirmed. Petitioner JWR appeals.

II. Discussion

To establish his right to black lung disability benefits, plaintiff must show that he suffers from pneumoconiosis, that the *1029 pneumoconiosis arose out of his coal mine employment, and that he is totally disabled due to pneumoconiosis. Lollar v. Alabama By-Products Corp., 893 F.2d 1258, 1262 (11th Cir. 1990).

A Allen’s Health

Petitioner urges us to reverse the ALJ’s determination that Alen suffered from pneumoconiosis. Athough some of the tests were negative, three of Dr. Rasmussen’s arterial blood gas studies produced qualifying values at rest. 2 In addition, various X-ray readers indicated that Alen was suffering from pneumoconiosis. Given these clinical data, in conjunction with Alen’s testimony, the ALJ’s conclusions on Alen’s health are supported by substantial evidence in the light of the entire record. Lollar, 893 F.2d at 1261.

B. Alen’s Total Disability 3

Petitioner also contends that Alen was not “totally disabled” for purposes of performing his duties as a maintenance foreman. JWR notes that Alen’s contractual job duties did not require the heavy work that caused Alen trouble. According to petitioner, Alen’s heavy work activities instead should be treated as “voluntary” acts that were outside the scope of his employment. 4

We disagree. An element of volition does not necessarily bar Alen from recovering damages resulting from heavy work. To determine the scope of Alen’s employment for purposes of “total disability,” the ALJ must make a fact-specific determination about Alen’s actual work. See generally, Brown v. Cedar Coal Co., 8 BLR 1-86, 1-88 (1985) (“The determination of what is a claimant’s usual coal mine employment is made on a case by case basis and will vary depending on the facts in each case.”); Shortridge v. Beatrice Pocahontas Coal Co., 4 BLR 1-534, 1-539 (1982) (“... usual coal mine work is the most recent job the miner performed regularly and over a substantial period of time”).

Alen’s employment with JWR encompassed all the tasks that were, in fact, a regular part of his coal-mining activities, 5 so long as management did not actively forbid him from doing these tasks (including heavy work). JWR’s deliberate ignorance, if any, about the actual scope of Alen’s work would not excuse management now from liability. Nor would half-hearted directions to Alen to stop his heavy work protect JWR.

Based on our review of the record, we agree that the ALJ properly concluded that Alen’s employment required heavy manual labor. Uncontradicted testimony indicated that other foremen were expected to do such heavy work, that Alen in fact did such work, and that JWR approved of the work that Alen was doing. Nor did the ALJ err in crediting Dr. Rasmussen’s report, which found that Allen was “totally disabled” from doing such heavy manual labor. Given the *1030 record on Allen’s scope of employment and Dr. Rasmussen’s medical findings, the ALJ’s award of damages was supported by substantial evidence.

AFFIRMED.