Ultra low frequency electromagnetic fire alarm system for underground mines

An edition of Ultra low frequency electromagnetic fire alarm system for underground mines (1991)

Ultra low frequency electromagnetic fire alarm system for underground mines

By Kenneth E. Hjelmstad

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Publish Date

1991

Publisher

U.S. Dept. of the Interior, Bureau of Mines

Language

eng

Pages

Description:

subjects: ELF electromagnetic fields, Fire alarms, Mine fires, Mines fires, Prevention and control