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- 90001697 contributor B6088111.
- 90001697 contributor B6088112.
- 90001697 contributor B6088113.
- 90001697 created "1990.".
- 90001697 date "1990".
- 90001697 date "1990.".
- 90001697 dateCopyrighted "1990.".
- 90001697 description "Includes bibliographical references (p. 22).".
- 90001697 extent "ii, 23 p. :".
- 90001697 isPartOf "Information circular (United States. Bureau of Mines) ; 9260".
- 90001697 isPartOf "Information circular ; 9260".
- 90001697 issued "1990".
- 90001697 issued "1990.".
- 90001697 language "eng".
- 90001697 publisher "Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines,".
- 90001697 subject "622 s 622/.48 20".
- 90001697 subject "Electric relays.".
- 90001697 subject "Electric shock.".
- 90001697 subject "Mining machinery Electric equipment Safety measures.".
- 90001697 subject "TN295 .U4 no. 9260 TN343".
- 90001697 title "The Bureau of Mines ground-fault protection research program : a summary / by Michael R. Yenchek and A. J. Hudson.".
- 90001697 type "text".