. Technical paper. cluding placer or coal mines. The tables follow. Number of men employed, number of days worked, and number of men killed in and aboutthe placer mines of the United States during the calendar year 1912. fto > B a oft a 0) o 1 3 ia oft ft o i- 3 ° o >>M)o3 Number killed. •a» . State. .aa o > o 8 1 P5 03>> n 8 1o o>.PQ 3 o s-laa<— * Oo 1 California 1992276531159 810 813 1,6571717112945319147353892 520,590 43,465143,765 61,5658,790 23,9798,3604,4225,320 28,835 314190202209165120178126140313 2 2 1 1 2 8000000000 Colorado Idaho Montana N
. Technical paper. cluding placer or coal mines. The tables follow. Number of men employed, number of days worked, and number of men killed in and aboutthe placer mines of the United States during the calendar year 1912. fto > B a oft a 0) o 1 3 ia oft ft o i- 3 ° o >>M)o3 Number killed. •a» . State. .aa o > o 8 1 P5 03>> n 8 1o o>.PQ 3 o s-laa<— * Oo 1 California 1992276531159 810 813 1,6571717112945319147353892 520,590 43,465143,765 61,5658,790 23,9798,3604,4225,320 28,835 314190202209165120178126140313 2 2 1 1 2 8000000000 Colorado Idaho Montana Nevada Oregon South Dakota Vfashington Wyoming 0 ther S tates o Total 459 3,289 849,091 258 2 2 1 1 2 8 o Includes Arizona, Georgia, New Mexico, North Carolina, and Utah. METAL-MINE ACCIDENTS IN THE UNITED STATES, 15 Accidents in placer mines of the United States during year ended Dec. 31, 1912. Cause of accident. Numberkilled. Number Numberseriously slightlyinjured, Dredging. Machinery Electricity Boiler explosions or bursting steam pipes. Falls of persons Tools. O ther causes Total number kiUed or injured by dredging accidents. Hydraulicking. Cave of bank Explosives Hydraulic giants Falls of persons Rock while Machinery, derricks, causes Total number killed or injured by hydraulicking accidents Underground. Fall of roof or gravel Timber or hand tools Explosives Falls of persons Haulage Drilling Hoisting Steam (when steam points are causes Total number killed or injured by underground accidentsGrand total METAL-MINE ACCIDENTS AND COAL-MINE ACCIDENTS COMPARED. The metal mines of the United States employed 169,199 menduring 1912 in comparison ^yit]l 722,662 men emploj^ed in coalmines during the same period. The total number killed in the coalmines was 2,360, this number comparing %vith 661 in the metal death rate in the former was and in the latter per 1,000men employed. Th
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