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Bureau of Mines / Minerals yearbook: Metals, minerals, and fuels 1972
Year 1972, Volume 1 (1972)

Kuklis, Andrew
Molybdenum,   pp. 793-806 PDF (1.6 MB)

Page 794

Figure L—Apparcnt consumption, production, and supply of molybdenum
in the United States. 
 Domestic output totaled 112.1 million pounds of molybdenum, 2% higher than
in 1971. Production reached an alltime high exceeding by 786,000 pounds the
previous record year in 1970. Molybdenum remained in oversupply because of
declining exports in recent years and lower than anticipated domestic demand
that resulted in a rise in stocks. 
 Molybdenum production from primary sources approximated that produced in
1971. Three operations mined over 21 million tons of ore containing from
4 to 7 pounds of molybdenum per ton. As in past years, the Climax mine in
Colorado of American Metal Climax, Inc. (AMAX), was the world's largest producer.
 Increased byproduct molybdenum production capacities at copper porphyry
plants, especially those completed in 1971, resulted in an 8% higher output
from these sources. Molybdenum production obtained from byproduct sources
rose to 37% from the 35% reported in 1971, continuing the upward trend of
past years. The significance of this trend is apparent when related to past
molybdenum production data. For example, in 1967, molybdenum output from
these sources accounted for only 26% of domestic production; hence, in 5
years the percent of molybdenum production from byproduct sources rose over
 Byproduct molybdenum from copper por 

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