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Injury experience in coal mining, 1959 :analysis of mine safety factors, related employment, and production data

Injury experience in coal mining, 1958 :analysis of mine safety factors, related employment, and production data

The National safety competition of 1959

Injury experience in the metal industries, 1958

Injury experience in coal mining, 1960 :analysis of mine safety factors, related employment, and production data

Injury experience in quarrying, 1958

The National safety competition of 1960

Injury experience in the nonmetal industries (except stone and coal), 1958

Injury experience in the metal industries, 1959

Injury experience in the metal industries, 1960

Injury experience in the nonmetal industries (except stone and coal), 1959

Injury experience in quarrying, 1959

Injury experience in quarrying, 1960

The National Safety Competition of 1961

Injury experience in coal mining, 1961 :analysis of mine safety factors, related employment, and production data

The National Safety Competition of 1962


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