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Bureau of Mines / Minerals yearbook: Area reports: domestic 1978-79
Year 1978-79, Volume 2 (1978-1979)

White, Doss H., Jr.; Sweeney, John W.
Puerto Rico, the Virgin Islands, and Pacific Island possessions,   pp. 461-464 PDF (420.0 KB)


Page 461

  461The Mineral Industry of 
Puerto Rico, the Virgin 
Islands, and Pacific Island 
Possessions 
This chapter has been prepared under a Memorandum of Understanding between
the 
Bureau of Mines, U.S. Department of the Interior, and the Department of Natural
Resources of the Commonwealth of Puerto Rico for collecting information on
all 
nonfuel minerals. 
By Doss H. White, Jr.1 and John W. Sweeney2 
PUERTO RICO 
Mineral production in Puerto Rico in 1978 and 1979 added $132.9 million and
$135.5 million, respectively, to the Island's economy. Puerto Rican nonfuel
mineral production was restricted primarily to minerals used directly or
indirectly in construction. 
Trends and Developments.—The construction industry in Puerto Rico
experienced
a decline in activity from 1974 
through 1977. Conditions improved in 1978 when construction permits increased
23% to a total value of $444 million. As a result, construction employment
and sales of construction materials showed positive signs of recovery for
the first time since the recession began. In 1978, production of all mineral
commodities increased, with the exception of salt, which remained the same
as in the previous year. 
Table 1.—Nonfuel mineral production in Puerto Rico' 
1977 
1978 
1979 
Mineral 
 Value 
Quantity (thousands) 
Quantity 
Value 
(thousands) 
Quantity 
Value 
(thousands) 
Cement, portland 
 thousand short tons_ — Clays                do~~ 
Lime do~~ 
Salt do__~ 
Sand and graveL do_ - - - 
Stone: 
 Crushed do_ — — — Dimension do —
— —
Total                  
1,367 
272 
40 
27 
e12,~)4) 
12,043 
144 
$67,775 
387 
3,007 
639 
e2100) 
42,648 
1,633 
1,442 
286 
41 
27 
NA 
13,765 
143 
$78,981 
544 
3,249 
639 
NA 
47,611 
1,898 
1,406 
260 
37 
27 
NA 
14,747 
79 
$70,191 
556 
3,307 
639 
NA 
59,733 
1,105 
XX 
137,089 
)Q~ 
2132,922 
XX 
2135,537 
eSatimato NA Not available. XX Not applicable. 
1Production as measured by mine shipments, sales, or marketable production
(including consumption by producers). 
2Total does not include value of items not available. 


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