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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
Hyatt Rach Pegmatite, Larimer County, Colorado
Report issued by the Bureau of Mines over studies conducted on Larimer County pegmatite deposits. Descriptions of the deposits are presented. This report includes tables, maps, photographs, and illustrations.
Date:
1960
Creator:
Gilkey, Millard M.
System:
The UNT Digital Library