208 MINERALS YEARBOOK, 1967 
 
Table 21.—Stone sold or used by producers, by uses 
Use 
1966 
— — 
Quantity Value 
 
1967 
 ——————— —— 
 Quantity Value 
 
Dimension stone: 
 Rough construction and rubble 
 short tons 2,595 
 Rough architectural cubic feet  (1) 
 Dressed architectural do~ -  1 67,377 Rough monumental do.~ 10,079 Dressed
monumental do                           Flagging do~... 55,268 
 Total (approximate) short tons. 13,000 
 
Crushed and broken stone: 
 Concrete and roadstone do_~.. 852,489 Lime do... 181,193 Metallurgical do~
297,316 Riprap do~ 210,049 Other do.~ 25,477,046 
 Total do.... 7,018,093 Total stone (approximate) do...~... 7,031,100 
 
$37,781 
(1) 
1 138,679 
34,525 
 
60,227 
5,786 
28,394 
37,932 
8,810 
5,000 
40,573 
$61,409 
38,139 
85,424 
12,860 
28,980 
41,244 
 
 
271,212 
15,300 
268,056 
 
 
1,152,402 
 415,375 
 703,008 
 417,689 
28,371,421 
 765,826 
 154,772 
 302,682 
 370,155 
3 1,383,541 
1,085,532 
 357,611 
 704,440 
 624,973 
' 2,444,443 
 
 
11,059,895 
2,976,976 
5,216,999 
 
 
11,331,107 
2,992,300 
5,485,055 - 
 1 Rough architectural and dressed architectural stone combined to avoid
disclosing individual company confidential data. 
 2 Includes stone used in abrasives, aggregates, asphalt filler, cement,
coal dust, concrete aggregates, dam fill, decorator rock, erosion control,
filter media, foundry, landscaping, poultry grit, precasting, rock gardens,
roofing granules, rotary drilling, stone sand, terrazzo, and traffic control
barricades. 
 ' Includes stone used in aggregate facings, aggregates, agriculture, asphalt
filler, cement, coal dust, filter media, foundry, landscaping, mineral food,
precasting, and terrazzo. 
 
second larges.t producer was Castle Concrete Co., which quarried and sold
limestone near Colorado Springs for use as riprap, concrete aggregate, and
roadbase material. CF&I Steel Corp. had the third largest output, producing
crushed limestone in Chaffee and Fremont Counties for use as flux and for
making lime at its steel plant in Pueblo. These three large producers accounted
for about twothirds of the total stone output. 
 Vermiculite.—W. R. Grace & Co. produced exfoliated vermiculite
at its expanding plant in Denver. Crude vermiculite used at the plant came
from the company's mine in Montana. The exfoliated product was sold for use
as loose-fill insulation, concrete and building-plaster aggregate, and for
agricultural purposes.