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Mining anthracite without roof-fall accidents at Colonial Colliery, Colonia Colliery Co., Natalie, Pa.

Published Year

• 1930-1939 (1)

Subject

• Anthracite coal--Pennsylvania (1)
• Coal mines and mining--Safety measures--Pennsylvania (1)
• Mine safety--Pennsylvania (1) *

Author

• Currie, R. D. (1) *

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