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Sand Available for Filling Mine Workings in the Northern Anthracite Basin of Pennsylvania
From Introduction: "This report is issued by the Bureau of Mines in the interest of safer and efficient mining methods. Its purpose is to describe the sand deposits in the northern anthracite coal field in Luzerne and Lackawanna Counties, Pa."
Date:
1913
Creator:
Darton, N. H.
System:
The UNT Digital Library