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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
Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910: Part 1. -- Analyses
From Significance and value of Analyses of Coal: "The analyses published in this report cover samples of coal collected in many different parts of the country with unusual care by experiences men, in such manner as to make them representative of extensive beds of coal."
Date:
1913
Creator:
Lord, N. W.
System:
The UNT Digital Library