Underground mine communications
By: compiled by staff, Mining Research, [Pittsburgh Mining and Safety Research Center].
Series: Information circular - Bureau of Mines ; 8742-8745; Information circular (United States. Bureau of Mines) -- 8742-8745.
Publisher: Dept. of the Interior, Bureau of Mines
Published: 1977
Place of publication: Pittsburgh, Pa
Language: eng
Subjects: Mine communication systems.
Notes: Includes bibliographies.
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