Searching Books & More : "Chekan, G. J. (Gregory J.)"

9 results found in Books & More
RSS
Cover images provided by Open Library

Loading characteristics of pillars in multiple-seam mining operations

Published: Pittsburgh, Pa. : U.S. Dept. of the Interior, Bureau of Mines, 1988
Format: Microform, Microfiche
Retrieving Holdings Information
Cover images provided by Open Library

Comparative study of pillar load transfer associated with multiple-seam mining

Published: Pittsburgh, Pa. : U.S. Dept. of the Interior, Bureau of Mines, 1988
Format: Microform, Microfiche
Retrieving Holdings Information
Cover images provided by Open Library

Investigation of longwall gateroad roof support characteristics of Powhatan no. 4 mine : instrumentation plan

Published: Pgh. [i.e. Pittsburgh], Pa. : U.S. Dept. of the Interior, Bureau of Mines, 1982
Format: Print
Retrieving Holdings Information
Cover images provided by Open Library

Convergence measurements for squeeze monitoring : instrumentation and results

Published: Pgh. [i.e. Pittsburgh], Pa. : U.S. Dept. of the Interior, Bureau of Mines, [1981]
Format: Print
Retrieving Holdings Information
Cover images provided by Open Library

Design practices for multiple-seam longwall mines

Published: Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1993
Format: Microform, Microfiche
Retrieving Holdings Information
Cover images provided by Open Library

Effects of abandoned multiple seam workings on a longwall in Virginia

Published: [Washington, D.C. (2401 E St., NW, MS #9800, Washington, 20241) : U.S. Dept. of the Interior, Bureau of Mines, 1989]
Format: Print
Retrieving Holdings Information
Cover images provided by Open Library

Interactions between multiple seam longwall and room-and-pillar operations : a case study in Boone County, WV

Published: Washington, D.C. (2401 E St., N.W., MS #9800, Washington 20241) : U.S. Dept. of the Interior, Bureau of Mines, 1990
Format: Print
Retrieving Holdings Information
Cover images provided by Open Library

Influence of subjacent gob on longwall development mining in the Upper Kittanning Coalbed of south-central Pennsylvania

Published: Washington, D.C. : Bureau of Mines, U.S. Dept. of the Interior, 1992
Format: Microform, Microfiche
Retrieving Holdings Information
Cover images provided by Open Library

Strata interactions in multiple-seam mining--two case studies in Pennsylvania

Published: Pittsburgh, Pa. : U.S. Dept. of the Interior, Bureau of Mines, 1986
Format: Print
Retrieving Holdings Information