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Review of State Mine Inspector's Reports as They Relate to Accidents from Falls of Roof
Report issued by the U.S. Bureau of Mines over state mine inspection reports from 19 U.S. states. The information in the reports includes details of accidents, locations that specific accidents occurred, and proposed remedies for prevention of future accidents. This report includes tables.
Date:
April 1929
Creator:
Paul, James Washington
System:
The UNT Digital Library
Survey of Gravities of Domestic Crudes
Report on the comparative gravities of oil extracted from different regions of the United States.
Date:
April 1929
Creator:
Hopkins, G. R. & Coons, A. B.
System:
The UNT Digital Library