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

Reed, Avery H.
Gypsum,   pp. 597-604 PDF (802.1 KB)


Page 597

  597Gypsum 
By Avery H. Reed' 
 The gypsum industry operated at record levels in 1972. Output of crude and
calcined gypsum set new annual records. Imports of crude gypsum were an alltime
high. Sales of gypsum products were higher than for any other year. 
 Republic Gypsum Co. reopened the Rosario mine and plant in Santa Fe County,
N. Mex., and Temple Gypsum Co. corn- 
pleted its new processing plant at West Memphis, Ark. 
 The gypsum resources of Oklahoma were described.2 
 Many companies were concerned about environmental problems at gypsum plants.
Rigid air pollution standards could force extensive plant revisions. The
disposal and possible use problems of waste gypsum at fertilizer plants were
examined. 
Table 1.—Salient gypsum statistics 
(Thousand short tons and thousand dollars) 
1968 
1969 
1970 
1971 
1972 
United States: 
Active mines and plants '                Crude:' 
115 
114 
108 
107 
108 
Mined                              
Value                        
Imports for consumption             
Calcined: Produced                     Value                            
Products sold (value)                     
 Exports (value) - 
Imports for consumption (value)            
World: Production                          
10,018 
36,775 
5,474 
8,844 
133,239 
404,739 
3,556 
13,058 
54,486 
9,905 
38,354 
5.858 
9,324 
143,466 
414,880 
3,446 
14,602 
57,581 
9,436 
35,132 
6,128 
8,449 
132,047 
353,474 
3,475 
16,581 
56,868 
10,418 
39,057 
6,094 
9,526 
151,991 
435,257 
4,214 
16,332 
58,552 
12,328 
48504 
7,718 
12,005 
195,862 
560,569 
5,276 
22,042 
63,545 
1Each mine, calcining plant, or combination mine and plant is counted as
1 establishment. ' Excludes byproduct gypsum. 
DOMESTIC PRODUCTION 
 Thirty-six companies mined crude gypsum at 65 mines in 21 States. Of these
mines, 12 were underground and 53 were open pit. Output increased 18% to
12,328,000 tons, 13% above the 1959 record. Leading States were Michigan,
Texas, California, Iowa, and Oklahoma. These five States, with 30 mines,
accounted for 59% of the total crude gypsum. Leading companies were United
States Gypsum Co. (13 mines), National Gypsum Co. (7 mines), Georgia-Pacific
Corp. (7 mines), The Flintkote Co. (2 mines), and The 
Celotex Co. (3 mines). These five companies, operating 32 mines, produced
75% of the total crude gypsum. Leading mines were U.S. Gypsum's Plaster City,
calif., mine, and Alabaster, Mick, mine; National's Tawas City, Mich., mine,
and Shoals, Ind., underground mine; and U.S. Gypsum's Southard, Okla. mine.
 Fourteen companies calcined gypsum at 
 1 Physical scientist, Division of Nonmetallic Minerals. 
' Johnson, Kenneth S. Gypsum and Salt Resources in Oklahoma. Industrial Minerals,
v. 62, November 1972, pp. 33—39. 


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