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Impact of current load on mine trailing cable thermal life / by M.R. Yenchek and P.G. Kovalchik (Information circular ; 9278)

Impact of current load on mine trailing cable thermal life / by M.R. Yenchek and P.G. Kovalchik (Information circular ; 9278)
Microform図書
1991<YCA-I 28.27:9278>
National Diet Library
  • Author HeadingYenchek, M. R. (Michael R.) Kovalchik, Peter G United States. Bureau of Mine...

Thermal characteristics of energized coal mine trailing cables / by M.R. Yenchek and P.G. Kovalchik (Report of investigations ; 9218)

Thermal characteristics of energized coal mine trailing cables / by M.R. Yenchek and P.G. Kovalchik (Report of investigations ; 9218)
Microform図書
1988<YCA-I 28.23:9218>
National Diet Library
  • Author HeadingYenchek, M. R. (Michael R.) Kovalchik, Peter G United States. Bureau of Mine...

Fuse wire arc tester / by Peter G. Kovalchik (Information circular ; 9120)

Fuse wire arc tester / by Peter G. Kovalchik (Information circular ; 9120)
Microform図書
1987<YCA-I 28.27:9120>
National Diet Library
  • Author HeadingKovalchik, Peter G United States. Bureau of Mine...

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