Directory of companies and plants producing salt in the United States.
United States.Branch of Industrial Minerals.
United States.Bureau of Mines.Branch of Data Collection and Coordination.
Washington, DC : U.S. Department of the Interior, Bureau of Mines,
1991.
Title from cover.
Vols. for 1990- prepared by the Branch of Industrial Minerals and the Branch of Data Collection and Coordination.
Salt industry and trade
Directory of companies producing salt in the United States