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U.S. Department of Energy
Office of Scientific and Technical Information

Minerals yearbook, 1991: Montana. Annual report

Technical Report ·
OSTI ID:6016542
The report has been prepared under a Memorandum of Understanding between the Bureau of Mines, U.S. Department of the Interior, and the Montana Bureau of Mines and Geology for collecting information on all nonfuel minerals. Montana's 1991 nonfuel mineral production value was $590 million, an increase of 3% from that of 1990. Gains in the production value of portland cement, copper, and gold more than offset the decrease in values of molybdenum, platinum-group metals, silver, crushed stone, and zinc. Metallic minerals-copper, gold, iron ore, lead, molybdenum, platinum-group metals, silver, and zinc-accounted for more than 82% of Montana's total nonfuel mineral production value. The State ranked 17th nationally in value compared with 19th in 1990.
Research Organization:
Bureau of Mines, Washington, DC (United States)
OSTI ID:
6016542
Report Number(s):
PB-93-235695/XAB
Country of Publication:
United States
Language:
English