United States yearbook - 1940 (1)

7 6 0 MINING AND MINERAL PRODUCTS'
N o. 7 5 7 .— M in e s a n d Q u a r r ie s , P r o d u c in g — S u m m a r y , b y I n d u s t r ie s :
1919 a n d 1929
Note. — Figures for 1010 and 1920 for the limestone, sandstone, abrasive materials, and silica Industries
are not strictly comparable, owing to tho inclusion or exclusion of data for 1929 not similarly treated for
1919, For the limestone industry, data for quarrying operations of lime and cement manufacturers are
included in the figures for 1929 but not in those for 1919, For the sandstone industry, data for enterprises
whose product was ground into glass or molding sand, or used as refractory materials (siliceous
mica schist and ganistor), eto., are included in the figures for 1919 but excluded from those for 1929 and
included in tho figures for the glass-sand, molding-sand, abrasive-materials, or sllioa industries, according
to the nature and purpose of the final product. Data for dfatomaceous earth are included in the figures
for abrasive materials in 1919 and in those for silica in 1929
[Wages and value of products in thousands of dollars]
IN DUSTRY
NUMBER OP
MINES AND
QUARRIES
WAGE EARN­
ERS (AVERAGE
FOR TH E YEAR)
HORSEPO W ER
wages
VALUE OF
PRODUCTS
1919 1929 1919 1920 1919 1929 1910 1929 M 9 1929
All industries 118,781 10,277 888,856 788,857 4,900,102 6,970,091 1,161,116 1,066,606 2,226,871 2,280,684
Coal:
Anthracite............. 421 303 147,872 142,801 899, 783 1,041,465 210, 280 229.967 364,084 384,854
Bituminous........... 8,282 5,620 645, 798 468,732 2,155,086 3,124,187 682,601 574, 800 1,146,978 066,694
Metals:
CoppeT.................. 229 18C 43,717 44,502 522,426 701, 791 00,390 73, 200 181,2 5 8 283,517
Iron ore.................. 408 208 45,741 28,516 370,860 498,821 75,713 40, 005 218,218 197,335
Load and zinc....... 478 375 21,884 25.007 229,401 357,737 30,708 30,102 76, 570 112,428
Gold and silver,
lode mines......... 709 258 16,436 7,046 149,100 98,772 23,818 12,982 58,832 26,107
Gold, placermfnes. 132 87 1,380 578 35, 032 20,230 1,914 970 9,369 3,770
Mercury................ 20 40 748 1,029 2,607 6, 625 828 1, 384 1,803 2,820
Manganese______ 87 21 009 354 5,800 2,342 1,086 392 2,188 1,185
Stone:
Limestone----- 92ft 1,256 22,069 32,300 213,717 535,456 23,026 30,188 62,044 117, 258
Granite................. 881 434 8,049 10,037 55, 614 108,217 8,588 12, 640 18, 270 30, 381
Basalt............ ........ 174 144 3,336 3,063 37,307 63,881 3,991 4,498 0,658 16,544
Slate___________ 104 180 3,613 4,008 20,613 33,817 3,128 4,884 5,721 10,486
Marble.......... ........ 02 88 1,732 3,350 16,628 30,108 1,452 3,292 4,398 7,639
Sandstone---------- 271! 172 4,287 2,156 33.869 28,035 4,449 2,626 10, 685 6,312
Miscellaneous....... « 234 (!) 1,841 (>i 28,627 («S 2,406 w 8,475
Miscellaneous:
Abrasive materlals8.....................
34 36 817 462 1,748 3,8% 322 491 722 1,411
Asbestos................ 11 11 146 105 420 2,114 92 237 260 397
Asphalt and biluminous
rook,. 12 25 324 1,123 648 13,109 295 1,255 750 5,124
Barite..................... 98 44 919 844 3,02D 0,006 769 048 1,592 1,801
Clay....................... m 28(1 6,453 4,136 21,203 31,877 5,367 3, 758 10,086 10,753
Foldspar................ 82 58 349 598 1,782 6,643 264 527 584 1,935
Fluorspar.............. 72 86 1,124 1,053 7,138 0,513 1,196 1,112 3,336 2,858
FullerB and filtering
earths.___ _ a 24 824 901 2,538 8,221 641 853 2,019 4,812
Gypsum................ 48 63 2,191 2,078 15,032 26,498 • 2,478 2,628 0,806 6,740
Magnesite—....... — ii 6 448 351 2,540 3,197 652 460 2,170 2,044
Mica.....................- . 69 32 448 226 803 1,721 288 105 007 616
M illstones and
pulpstones------- 11 14 87 164 220 2,517 48 221 05 021
Minor metals