Ultra low frequency electromagnetic fire alarm system for underground mines
By: by K.E. Hjelmstad and W.H. Pomroy.
Contributors: Pomroy, William H.
Series: Report of investigations (United States. Bureau of Mines) -- 9377
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1991
Place of publication: Washington, DC
Language: eng
Number of pages: 11
Subjects: Mines fires -- Prevention and control; Fire alarms.; ELF electromagnetic fields.
Notes:  91010026  t_oclc

Bibliogr.

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