Cover Image

Vertical magnetic noise in the voice frequency band within and above coal mines /

Bibliographic Details
Main Author: Durkin, John
Corporate Author: United States. Bureau of Mines
Format: Government Document Book
Language:English
Published: [Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, [1983]
Series:Report of investigations (United States. Bureau of Mines) ; 8828.
Subjects:
Coal mines and mining > Communication systems.
Online Access:https://purl.fdlp.gov/GPO/LPS96976

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