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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
Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910 Part 2. Descriptions of Samples
From Introduction: "This volume contains the descriptions of the samples whose analyses are published in the preceding volume, Part I of this bulletin. The descriptions have been compiled from the notebooks of the persons who collected the samples, have been condensed from accounts given in published reports of the United States Geological Survey, or have furnished by the collection themselves. Inasmuch as the descriptions represent the work of many persons during a period of six years, and inasmuch as they were recorded under widely differing conditions, they necessarily vary in fullness detail."
Date:
1913
Creator:
Lord, N. W.
System:
The UNT Digital Library
Minable Reserves, Petrography, Chemical Characteristics, and Washability Tests of Coal Occurring in the Coos Bay Coal Field, Coos County, Oregon
Report issued by the Bureau of Mines discussing the coal reserves of Coos County, Oregon. Investigations conducted on the minable coal reserves are presented in detail. This report includes tables, maps, illustrations, and photographs.
Date:
1948
Creator:
Toenges, Albert L.; Dowd, James J.; Turnbull, Louis A.; Schopf, J. M.; Cooper, H. M.; Toenges, Albert L. et al.
System:
The UNT Digital Library
Notes on the Black Sand Deposits of Southern Oregon and Northern California
Technical paper issued by the Bureau of Mines over the black sands of Oregon and California. The history, and character of the deposits are presented. This paper includes tables, maps, photographs, and illustrations.
Date:
1918
Creator:
Hornor, R. R.
System:
The UNT Digital Library