Directory of companies mining talc, pyrophyllite, and soapstone in the United States in ... /
United States.Bureau of Mines.Division of Industrial Minerals.
United States.Branch of Industrial Minerals.
Washington, D.C. : The Division
At head of title: U.S. Department of the Interior, Bureau of Mines.
Issues for  have title: Directory of companies mining talc, soapstone, and pyrophyllite in the United States in ... ;  have title: Directory of companies mining talc and pyrophyllite in the United States in ...
Description based on: 1989.
Latest issue consulted: 1992.
Vols. for  prepared in the Division of Industrial Minerals;  prepared in the Branch of Industrial Minerals.
Talc industry
Soapstone industry
Pyrophyllite industry
Talc and pyrophyllite in ...