40 resultados para diamond electrode
em University of Michigan
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"Authorities referred to in this work": p.ix-xii.
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Mode of access: Internet.
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Mode of access: Internet.
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Texas State Department of Highways and Public Transportation, Austin
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"Contract No. AT(05-1)-725."
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"Geology and mineralogy"--Cover.
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"October 1955."
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Radiometric logging of the drill holes was accomplished by means of a Geiger counter-type probe. Samples for chemical assay were selected after checking the core with a Geiger counter and correlation with the radiometric logging record. The exploration project did not disclose significant amounts of ore-grade material although encouraging indications were found at two different properties.
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The consumable electrode arc melting of cold-compacted thorium powder has been developed to produce dense, clean and soft ingots which can be hot rolled without cracking. By using a water-cooled copper crucible, contamination has been prevented and resultant ingots cleaner than the original powder have been produced.