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Data based on report from 2906 operators in 42 States; certain non-metallic mineral mines are included, except coal mines and properties that produce clay, sand and gravel; 103,233 men worked 27, 869,982 man days; 271 killed and 15,594 injured by mine accidents; tabular statistics.
Data based on report from 2906 operators in 42 States; certain non-metallic mineral mines are included, except coal mines and properties that produce clay, sand and gravel; 103,233 men worked 27, 869,982 man days; 271 killed and 15,594 injured by mine accidents; tabular statistics.
Metal-mine accidents in United States: 1930
U S Bur Mines -- Bul
Adams, W.W. (author)
1932
99 pages
Report
English
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