Black Hills Power and Light Company, a South Dakota Corporation v. Caspar W. Weinberger, as Secretary of the Department of Defense Department of Defense, an Agency of the United States of America Richard D. Rasmussen, as Contracting Officer for Ellsworth Air Force Base, a Defense Installation Under the Control of the Department of Defense Heartland Consumers Power District, a Subdivision of the State of South Dakota West River Electric Association, Inc., a South Dakota Rural Electric Cooperative and the Public Utilities Commission, a Regulatory Commission of the State of South Dakota, Black Hills Power and Light Company v. Heartland Consumers Power District, Ellsworth Air Force Base, United States of America, (Two Cases) Black Hills Power and Light Company, a South Dakota Corporation v. Caspar W. Weinberger, as Secretary of the Department of Defense Department of Defense, an Agency of the United States of America Richard D. Rasmussen, as Contracting Officer for Ellsworth Air Force Base, a Defense Installation Under the Control of the Department of Defense Heartland Consumers Power District, a Subdivision of the State of South Dakota West River Electric Association, Inc., a South Dakota Rural Electric Cooperative and the Public Utilities Commission, a Regulatory Commission of the State of South Dakota, Black Hills Power and Light Company v. Heartland Consumers Power District, Ellsworth Air Force Base, United States of America. (Two Cases)

Court of Appeals for the Eighth Circuit