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Annual Report of Research and Technologic Work on Coal: Fiscal Year 1941
Report issued by the U.S. Bureau of Mines discussing the annual report over the research and technology of coal during 1941. As stated in the foreword, "these investigations increase our fund of exact knowledge on the properties and composition of American coals and lead to better methods in mining, preparing, storing, and utilizing coal" (p. 4). This report includes tables, illustrations, photographs, and a map.
Date:
November 1941
Creator:
Fieldner, Arno Carl & Schmidt, L. D.
Object Type:
Report
System:
The UNT Digital Library
Plates 1-3: Aeroradioactivity Map (ARMS-II), Camden-Delaware Valley Area
Maps of three segments in the Camden-Delaware Valley area surveyed as part of a radiological survey, outlining "Radioactivity levels in hundreds of counts per second normalized to 500 ft above ground." Scale 1:250,000.
Date:
November 10, 1961
Creator:
Edgerton, Germeshausen & Grier
Object Type:
Map
System:
The UNT Digital Library