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U.S. Geological Survey,

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This document is the result of a workshop on coal description held for the Branch of Coal Resources of the U.S. Geological Survey in March 1982. It has been prepared to aid and encourage the field-oriented coal scientist to participate directly in petrographic coal-description activities. The objectives and past and current practices of coal description vary widely. These are briefly reviewed and illustrated with examples. Sampling approaches and techniques for collecting columnar samples of fresh coal are also discussed. The recommended procedures and methodology emphasize the fact that obtaining a good megascopic description of a coal bed is much better done in the laboratory with a binocular microscope and under...
Categories: Publication; Types: Citation; Tags: Circular
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Presented are hydrologic data collected in northern Utah Valley from 1935 to 1982. The data include records of selected wells, springs, drains, irrigation ditches, streams, water quality, and drillers ' logs of selected wells. Some of the data were previously published by the Geological Survey and cooperating agencies. (USGS)
Categories: Publication; Types: Citation; Tags: Open-File Report
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