INTERNATIONAL UNION, UNITED MINE WORKERS OF AMERICA, PETITIONER, v. THOMAS S. KLEPPE, SECRETARY OF THE INTERIOR, RESPONDENT, BITUMINOUS COAL OPERATORS ASSOCIATION, INC. AND ZEIGLER COAL COMPANY, INTERVENORS. No. 75-1003.United States Court of Appeals, District of Columbia Circuit.Argued March 3, 1976. Decided April 13, 1976. Rehearing Denied May 6, 1976. Page 1404 Steven B. Jacobson, Washington, […]