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

Ampian, Sarkis G.
Clays,   pp. 301-327 ff. PDF (2.9 MB)


Page 306

306 
MINERALS YEARBOOK, 1972 
Table 8.—Kaolin sold or used as reported by producers in the United
States in 1972, 
by kind and use 
(Short tons) 
Use 
Airfloat 
Unprocessed 
Waterwashed1 
Total 
Adhesives                                
Alum (aluminum sulfate) and other chemicals       
Animal feed                               
Brick,face                                
Catalysts (oil refining)                       
Cement, portland                           
Ceramic—hobby                           
W 
- - 
W 
W 
W 
-- 
27,471 
133 
284,507 
36,880 
54,434 
~ 
W 
83,534 
W 
W 
W 
21,264 
73,417 
111,005 
9,452 
285,268 
67,990 
75,698 
~ 
China/dinnerware                          
Crockery and other earthenware                
Electrical porcelain                         
Fertilizers                                
Fiberglass                                
Firebrick,block,andshapes                   
Floor and wall tile, ceramic                    
Glazes,glass,andenamels                    
Grogs and crudes, refractory                   
Gypsum products                           
Paint                                   
Paper coating                              
Paperfilling                               
Pesticidesandrelatedproducts                 
Plastics                                  
Pottery                                  
Rubber                                  
Sanitary ware                             
Miscellaneous                             
Undistributed                             
Total                               
Exports: 
W 
19,995 
5,938 
W 
W 
84,739 
43,235 
W 
W 
6,491 
16,617 
16,100 
264,354 
25,306 
W 
13,355 
349,661 
86,437 
26,112 
274,559 
-- 
252,608 
200 
W 
W 
6,100 
~ 
5,000 
W 
~ 
8,898 
137,822 
W 
W 
W 
W 
- - 
3,510 
124,878 
1,417,816 
500,784 
3,136 
W 
W 
26,438 
59,616 
40,929 
240,683 
50,801 
19,995 
5,938 
75,969 
153,788 
337,347 
43,435 
27,126 
153,541 
16,101 
141,495 
1,433,916 
765,138 
28,442 
71,844 
23,743 
376,099 
146,053 
75,939 
(2) 
1,232,899 
814,058 
2,522,588 
4,569,545 
Paint                                
Paper coating                        
Paper filling                           
Refractories                           
Rubber                               
Other                                
- 
1,834 
10,123 
59,525 
2,685 
-- 
58,727 
23,395 
361,431 
181,632 
33 
3,109 
45,598 
23,395 
361,431 
183,466 
68,883 
62,634 
48,283 
Total                               
Grand total                          
74,167 
58,727 
615,198 
748,092 
1,307,066 
872,785 
3,137,786 
5,317,637 
W Withheld to avoid disclosing individual company confidential data; included
with "Undistributed." 
- ' Includes calcined and delaminated. 
2 "Undistributed" total included with total for each specific use. 
Table 9.—U.S. exports of kaolin 
as reported by producers, by use (Short tons) 
Use 
1971 
1972 
Paper coating         
Paperfilling          
Rubber             
388,984 
50,492 
49,806 
361,431 
183,466 
62,634 
Other'              
72,090 
140,561 
Total          
561,372 
748,092 
 ' Includes paint, plastics, refractories, and other uses. 
BALL CLAY 
 Production and value reported for domestically mined ball clay in 1972 increased
12%. Tennessee mines provided 64% of the Nation's output, followed in order
of output by Kentucky, Mississippi, Texas, California, Maryland, New York,
and Indiana. Production in Kentucky, California, Maryland, Mississippi, and
Tennessee increased over that reported in 1971. 
 Ball clay is defined as a plastic, whitefiring clay used principally for
bonding in ceramic ware. The clays are of sedimentary origin and consist
mainly of the clay mineral kaolinite and sericite micas. 
 In 1972 Ameri-can-Olean Tile Co. announced plans for a future factory for
manufacturing quarry tile at Roseville, Calif. NL Industries, Inc., acquired
Bell Clay Co. of Gleason, Tenn. Bell's complete line of ball clays were to
be marketed through NL Industries' TAM Division, and will supplement the
clays and other materials that the division supplies. 
 The average unit value for ball clay reported by domestic producers rose
in 1972 


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