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Search results 6

Comparison of models to evaluate in situ shield loading / by Thomas M. Barczak and David E. Schwemmer (Report of investigations ; 9327)

Comparison of models to evaluate in situ shield loading / by Thomas M. Barczak and David E. Schwemmer (Report of investigations ; 9327)
Microform図書
1990<YCA-I 28.23:9327>
National Diet Library
  • Author HeadingBarczak, Thomas M Schwemmer, David E United States. Bureau of Mine...

Two-leg longwall shield mechanics / by Thomas M. Barczak and David E. Schwemmer (Report of investigations ; 9220)

Two-leg longwall shield mechanics / by Thomas M. Barczak and David E. Schwemmer (Report of investigations ; 9220)
Microform図書
1989<YCA-I 28.23:9220>
National Diet Library
  • Author HeadingBarczak, Thomas M Schwemmer, David E United States. Bureau of Mine...

Horizontal and vertical load transferring mechanisms in longwall roof supports / by Thomas M. Barczak and David E. Schwemmer (Report of investigations ; 9188)

Horizontal and vertical load transferring mechanisms in longwall roof supports / by Thomas M. Barczak and David E. Schwemmer (Report of investigations ; 9188)
Microform図書
1988<YCA-I 28.23:9188>
National Diet Library
  • Author HeadingBarczak, Thomas M Schwemmer, David E United States. Bureau of Mine...

Effect of load rate on wood crib behavior / by Thomas M. Barczak and David E. Schwemmer (Report of investigations ; 9161)

Effect of load rate on wood crib behavior / by Thomas M. Barczak and David E. Schwemmer (Report of investigations ; 9161)
Microform図書
1988<YCA-I 28.23:9161>
National Diet Library
  • Author HeadingBarczak, Thomas M Schwemmer, David E United States. Bureau of Mine...

Stiffness characteristics of longwall shields / by Thomas M. Barczak and David E. Schwemmer (Report of investigations ; 9154)

Stiffness characteristics of longwall shields / by Thomas M. Barczak and David E. Schwemmer (Report of investigations ; 9154)
Microform図書
1988<YCA-I 28.23:9154>
National Diet Library
  • Author HeadingBarczak, Thomas M Schwemmer, David E United States. Bureau of Mine...

Practical considerations in longwall face and gate road support selection and utilization / by Thomas M. Barczak, David E. Schwemmer, and Carol L. Tasillo (Information circular)

Practical considerations in longwall face and gate road support selection and utilization / by Thomas M. Barczak, David E. Schwemmer, and Carol L. Tasillo (Information circular)
Microform図書
1989<YCA-I 28.27:9217>
National Diet Library
  • Author HeadingBarczak, Thomas M Schwemmer, David E Tasillo, Carol L United State...

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