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Bureau of Mines / Minerals yearbook: Metals and minerals 1977
Year 1977, Volume 1 (1977)

Stafford, Philip T.
Tungsten,   pp. 961-976 PDF (1.9 MB)


Page 961

  961Tungsten 
By Philip T. Stafford1 
 Domestic production and consumption of tungsten concentrate increased 3%
and 6% to 6 million pounds and 17.1 million pounds, respectively, compared
with those of 1976. Almost 93% of this material was obtained from two mining
operations, one in California and one in Colorado. Production of ammonium
paratungstate (APT) rose 17% to 14.9 million pounds in 1977, and reported
consumption of APT decreased slightly to 15.7 million pounds. Production
and consumption of tungsten products increased 4% and 1%, respectively. Imports
for consumption of tungsten concentrate rose 31% to 6.9 million pounds, but
exports of tungsten concentrate, from sales of Government stockpile excesses,
fell 26% to 1.3 million pounds of contained tungsten in 1977. 
 The reported price of tungsten concentrate, shipped from mines and custom
mills, increased 44% and averaged $145 per short ton unit f.o.b. 
 Legislation and Government Programs.—During the year, the General
Services Administration (GSA) Office of Stockpile Disposal continued to sell
excess tungsten concentrate on the basis of monthly sealed bids. Regular
offerings of excess concentrate were made at the disposal rate of 500,000
pounds of contained tungsten per month, of which 375,000 pounds was for domestic
use and 125,000 pounds was for export. In January 1977, a single supplemental
offering was made. Starting in March, supplemental offerings of concentrate
were made on the basis of monthly 
Table 1.—Salient tungsten statistics 
(Thousand pounds of contained tungsten and thousand dollars) 
1973 
1974 
1975 
1976 
1977 
United States: 
Concentrate: 
Mine production  Mineshipments                      
 Value                          
Consumption                        
Shipments from Government stocks        
Exports'                           
Imports,general                     
Imports for consumption                
Stocks, Dec. 31: 
 Producer                       
7,575 
7,059 
$19,154 
15,386 
1,269 
 90 
11,047 
10,834 
 225 
7,381 
7,836 
$37,413 
16,298 
6,398 
1,187 
11,786 
11,096 
 529 
5,588 
5,490 
$29,090 
14,012 
2,970 
1,316 
6,908 
6,570 
 531 
5,830 
5,869 
$37,266 
16,107 
4,004 
1,729 
5,802 
5,301 
 150 
6,008 
6,022 
$55,073 
17,100 
5,015 
1,283 
6,847 
6,919 
 124 
Consumer                       
 Employment2                      Ammonium paratungstate: 
 Production                         
 Consumption                        
 Stocks, Dec. 31: Producer and consumer - — — —
—
Primary products: 
 Production                         
 Consumption                        
 Stocks, Dec. 31: 
1,446 
535 
13,012 
13,945 
945 
16,600 
17,984 
1,565 
540 
14,707 
15,733 
1,062 
20,131 
20,556 
1,958 
525 
10,282 
10,353 
1,704 
12,634 
12,934 
1,002 
540 
12,808 
15,921 
1,438 
18,226 
16,799 
826 
945 
14,940 
15,744 
1,975 
19,005 
16,905 
Producer                       
 Consumer                      world: Concentrate: 
3,523 
2,051 
3,628 
2,771 
3,976 
2,753 
3,390 
2,778 
3,139 
2,581 
Production                        Consumption                        
83,612 
84,857 
82,832 
83,506 
r84,508 
r73,949 
r91,767 
r8z297 
93,630 
79,117 
 ~Revimd. 
 ' Estimated tungsten content. 
 2Estimated number of persons at mines and mills, excluding office workers,
at yearend. 


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