2 Capacities expressed as output of "first-settle" calcined gypsum suitable
for use in common wall or basecoat plasters. Fipires do not include data
on beehive kilos; see text.
 2 Includes data on active rotary kilos in this district.
 2 Included with data on active kettles in this district.
 ' Includes data on inactive kettles in this district.
 I Included with active capacity of this district.
 Figures refer to grinding-calcining kiln-mills.
 ' Includes data on active grinding-ealcining kiln-mills.
 GYPSUM 1295

combinations. Output increased in nearly all the States, with New York, Michigan,
Iowa, and Texas (in order of tonnage) continuing as the leading producers.
 Average estimated value of run-of-mine gypsum advanced 1 cent to $1.42 per
ton in 1941. As reported by the producers, this is essentially a "transfer"
value, because run-of-mine material seldom is bought and sold in open market.
Data in the preceding table do not include byproduct crude gypsum.

CAPACITIES AND EQUIPMENT OF PROCESSING PLANTS

 Caicined gypsum was produced in 25 States by 57 plants—45 processing
domestic crude, 11 imported crude, and 1 byproduct crude gypsum. Total kettle
and kiln output was 3,980,567 short tons—a net gain of .672,858 tons
over 1940. Active calcining equipment included 179 kettles, 13 rotary kilns,
8 beehive kilns, and 4 grindingcalcining kiln-mills. Equipment that was idle
throughout 1941 included 10 kettles, 1 rotary kiln, and 1 beehive kiln

Capacities and number of calcining units in active gypsum calcining plants
in the
United &ates in 1941, by types and status of equipment and by districts
District
0
e
~
.~

,~
Q
~
~

~
Kettles
._
Active Inactive



Rotary kilos Active Inactive



Total capacity per
24-hour day




1.
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~

~
~4
0
~
~
4
~
444)
~:0
o
.2~
~
Z
0

~

~

4

ll~

4)44

~,0

0
.2~

~

Z
4
4)44
~' 0

0
,~
.5
~

~
4
4)44
~V

0
4)
~
~

~
.~

~

.~

~..

~

~
l~

-~ .-'  .~

~

E~
New Hampshire, Vermont, Massachusetts, and Connecticut.                 


Eastern New York, New Jersey, and Pennsylvania     

Virginia, Georgia, and Florida

Western New York        

Ohio, Michigan, and Indiana..

Iowa.                   

Kansas and Oklahoma     

Texas.                  

Colorado, Wyoming, South
 Dakota, and Montana .utah                   Nevada and Arizona        

California               

Summary.          
4

5

5

5

8

5

3

4

6

4

3

5
3 7

2 23
2 15
2 21
2 434
 19
 11
 25

 11
 S
 10
 13
2 1, 399
24,722
' 2, 124
144,491
3~6, 144
 2, 728
p1,305
 2,448
.
 1,003
495
 1,015
 1,480
1



(3)
(3)
(3)
-
4
64
 
 
(3)
(3)
(~)
- - - -
259
 
 
 
(3)

(3~
(3)

(3)
(3)
-. - -
(3)



-


6 4
(3)

(3)
(3)
(3)
(3)

(3)
 


..

 
 
288
1
 
 
50

 
 
 
 

 
1, 399

4,722

2, 124

4 4, 491

4 6, 144

2, 728

1, 105

2,448

1,003
 495
1,015
1, 768
114

- -. - -
- - -
(5)
(5)
(1)
- - -
259

. - -
- -- -
 
- -- - -
1, 513
4.722
2.124
4. 491
6, 144
2, 728
1, 305
2~ 707
1,003
 495
1,015
1, 768

57
179
22395
10
828
~7
' 6~42
I
50~2%137

878
3(~015