Clarence C. Sharpless v. Joseph A. Califano, Jr., Secretary of the Department of Health, Education and Welfare

WINTER, Circuit Judge:

The principal issue which concerns us in this appeal is the right of the Secretary and his designees, in the course of administrative proceedings to determine an entitlement to black lung benefits under the Federal Coal Mine Health and Safety Act, 30 U.S.C. §§ 901 et seq., 1 to make a credibility determination between so-called “A” and “B” readers of chest roentgenograms (x-rays) as to whether such x-rays establish the existence of pneumoconiosis. We hold that the Secretary is authorized to make this determination and, as a consequence, we affirm the order of the…