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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 600

 MINERALS YEARBOOK, 1972600 
76 plants in 30 States. Output increased 
26% to 12,005,000 tons and set a new annual record. Leading States were Texas,
California, New York, Iowa, and Georgia. These five States, with 29 plants,
accounted for 43% of the total calcined gypsum. Leading companies were United
States Gypsum Co. (23 plants), National Gypsum Co. (19 plants), Georgia-Pacific
Corp. (10 plants), The Flintkote Co. (5 plants), and Kaiser Gypsum Co. Inc.
(5 plants). These 
five companies operated 62 plants, and produced 85% of the total calcined
gypsum. 
 Valley Nitrogen Producers Inc., Occidental Petroleum Corp., and Collier
Carbon & Chemical Corp. sold 278,600 tons of byproduct gypsum for agricultural
use in California. 
 The United States is the world's leading producer of gypsum, accounting
for 19% of the total output. 
Table 3.—Crude gypsum mined in the United States, by State 
(Thousand short tons and thousand dollars) 
State 
1971 
1972 
Active 
Mines 
Quantity 
Value 
Active 
Mines 
Quantity 
Value 
* 
California                    
Iowa -Michigan                    Nevada                     Newiork    
                   Oklahoma                   South Dakota              
  Texas                         Washington                       Wyoming
                   OtherStates'                  
7 
5 
5 
3 
3 
8 
1 
7 
1 
4 
23 
1,352 
1,154 
1,433 
695 
415 
1,022 
21 
1,303 
W 
232 
2,791 
3,884 
4,460 
5,585 
2,372 
2,376 
3,073 
83 
4,806 
W 
 918 
11,500 
5 
5 
5 
3 
3 
8 
1 
7 
1 
3 
24 
1,~525 
1,380 
1,650 
860 
486 
1,196 
24 
1,542 
5 
 W 
3,660 
4,965 
5,714 
7,267 
2,871 
3,079 
3,888 
43 
5,284 
13 
 W 
15,380 
Total                   
67 
10,418 
39,057 
65 
12,328 
48,504 
 W Withheld to avoid disclosing individual company confidential data; included
with "Other States." 
 ' Includes ' Louisiana, Montana, and Virginia, 1 mine each; Arkansas, Indiana,
Kansas, Ohio, and Utah, 2 mines each; New Mexico, (1972) 3 mines; Arizona
and Colorado, 4 mines each. 
Table 4—Calcined gypsum produced in the United States, by State 
(Thousand short tons and thousand dollars) 
 1971 1972 
  Calcining        Calcining Active Quan- Value equipment   Active   Quan-
  Value     equipmentState plants tity  plants tity  Kettles Other'    Kettles
Other' 
California  881 10,838 18 5 7 1,154 12,036 16 9Florida  518 5,769 9 2 3 594
7,014 9 2Georgia  616 11,058 15 -- 3 702 12,984 15 --Iowa  796 13,704 22
4 5 913 15,396 22 4Michigan  373 7,263 9 1 4 536 10,640 9 1Nevada  330 4,851
12 6 3 562 8,386 12 6NewJersey~  452 7,369 9 4 4 529 9,798 9 4NewYork  922
15,688 21 8 7 1,138 21,214 21 6Ohio  358 5,790 9 1 3 433 6,796 9 1Texas 
1,035 17,074 30 1 7 1,294 21,538 30 3OtherStates'-,. 2~ 3,245 52,587 77 37
30 4,150 70,060 78 52 
 Total...... 74 9,526 151,991 231 69 76 12,005 195,862 230 88 
 ' Includes rotary and beehive kilns, Holoflites, grinding-calcining units,
and Hydrocal cylinders. ' Includes Arizona, Arkansas, Colorado, Connecticut,
Delaware, Illinois, Massachusetts, Montana, New Hampshire, New Mexico (1971),
Pennsylvania, and Washington, 1 plant each; Kansas, Louisiana, Maryland,
New Mexico (1972), Oklahoma, Utah, Virginia, and Wyoming, 2 plants each;
and Indiana, 3 plants. 
CONSUMPTION AND USES 
 Apparent consumption of gypsum, as measured by production plus imports minus
exports, was 20.0 million tons, an 
increase of 21% and a new annual record. Imports were 39% of the total. 
 Of the total gypsum supply, 5.2 million 


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