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Call Number: H - Social Science
Author: National Institute for Occupational Safety and Health
Subject: Miners Employment
Institution
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6
Mine accidents
6
Mine safety
Miners Employment
3
Mineral industries Employees
1
Aggregate industry Employees
1
Building stone industry Employees
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1
Clay industries Employees
1
Contractors' operations
1
Crushed stone industry Employees
1
Nonmetallic minerals industry Employees
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