1 Includes limestone for cement and lime.2 Includes granite, marble, and
miscellaneous stone.698 
MINERALS YEARBOOK, 1967 
 
 
Table 4.—Sand and gravel sold or used by producers, by classes of operations
and uses 
(Thousand short tons and thousand dollars) 
 
 1966 1967 
Class of operation and use 
Quantity Value Quantity Value 
Commercial operations: 
Sand: 
 Building 2,409 $4,495 3,065 $5,982 Paving 1,884 2,130 2,360 3,249 Fill 634
547 960 817 
 Total 4,927 7,172 6,385 10,048 
 
Gravel: 
 Building 2,245 4,074 2,779 5,108 
 Paving 1,214 1,934 3,006 4,428 Fill 458 381 577 490 
 Total — 3,917 6,389 — 6,362 10,026 
 Total sand and gravel 8,844 13,56112,74720,074 
 
Government-and-contractor operations: 
Sand: 
 Building 8 15 
 Paving 279 303 413 604 Fill 586 539 485 410 
 Total 865 842 906 1,029 
 
Gravel: 
Building   9 13Paving 27 36 265 371Fill 143 115 174 146 
Total — 170 151 448 530 
Total sand and gravel 1,035 993 1,354 ' 1,558 
Grand total 9,879 14,554 14,101 ' 21,633 
' Data does not add to total shown because of independent rounding. 
Stone.—Andesite, tuffaceous siltstone, used principally in making cement,
corn- 
and miscellaneous volcanic stone were pro- prised 77 percent of the total
stone out 
duced in all districts except Arecibo. put. The limestone was quarried near
the 
Granite was produced in Humacao and cement plants at Ponce and San Juan.

Guayama Districts, and limestone was pro- Crushed marble was used in making

duced in all districts. Crushed limestone, terrazzo. 
Table 5.—Stone sold or used by producers 
(Thousand short tons and thousand dollars) 
Dimension limestone Crushed limestone~ Miscellaneous stone 2 Total 
Year — — 
Quantity Value Quantity Value Quantity Value Quantity Value 
 1963 65 $152 3,918 $5,306 1,351 $2,779 5,334 $8,237 1964 75 191 4,347 6,009
1,082 2,386 5,504 8,586 
 1965 74 180 4,236 6,607 1,034 2,324 5,344 9,111 1966 88 231 4,416 7,555
1,228 2,755 5,732 10,541 1967 101 293 5,578 8,767 1,590 3,735 7,269 12,795