227 resultados para Drilling and boring machinery.
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Cover title: American cotton-spinner.
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Printed in Great Britain.
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"October 1955."
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"January 1956."
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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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"DATE."
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Mode of access: Internet.
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Referred to the Committee on interstate and foreign commerce and ordered printed, with illustrations, June 6, 1938.
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Includes bibliographical references.
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"April 1955."
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"January 5, 1955."
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Mode of access: Internet.
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"A compilation of many of the most valuable instruction books of the American school of correspondence."--Forword.
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"Prepared under the supervision of William A. Radford, editor-in-chief ... Alfred Sidney Johnson ... editor in charge."
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Plates printed on both sides.