Lynn M. Ferrante
Paul Averitt
PT Newmont Nusa Tenggara
E.I. du Pont de Nemours & Company
United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on Mining and Natural Resources.
Unknown Author
United States. Congress. House. Committee on Government Operations. Environment, Energy, and Natural Resources Subcommittee.
John F. Stacks
United States. Office of Surface Mining Reclamation and Enforcement.
Arthur E Robb
Gordon H. Dechman
National Seminar on Surface Mining (4th 1992 Dept. of Mining Engineering, Indian School of Mines)
J. V. Borghese
Suzanne Gordon
W. A. Hustrulid
Shirley Stewart Burns
United States. Soil Conservation Service.
United States. General Accounting Office
Geoff Beale
United States. Bureau of Land Management. Butte District.