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Approved Explosion-Proof Coal-Cutting Equipment
Report discussing description of equipment tested to prevent explosions when using coal-cutting explosions and provides explanation of fire damp protection theory.
Date:
1920
Creator:
Ilsley, L. C. & Gleim, E. J.
System:
The UNT Digital Library
Coal-Washing Investigations: Methods and Tests
From Introduction: "The investigations described in this bulletin are confined to a study of the washing characteristics of bituminous coals. The washing characteristics of coals from many of the most important coal-producing fields of the Eastern and Central States were examined."
Date:
1929
Creator:
Yancey, H. F. & Fraser, Thomas
System:
The UNT Digital Library