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Start Over Collection Technical Report Archive and Image Library Serial/Series Title Information circular (United States. Bureau of Mines) Decade 1960-1969 Year 1969

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Specifications for Selected Hydraulic-Powered Roof Supports: With a Methods to Estimate Support Requirement for Longwalls (open access)

Specifications for Selected Hydraulic-Powered Roof Supports: With a Methods to Estimate Support Requirement for Longwalls

Report issued by the Bureau of Mines discussing hydraulic-powered roof support specifications. As stated in the abstract, "this report presents observations made by Bureau engineers regarding hydraulic-powered roof supports that are currently being used or have been used on nearly all operating long-walls in the United States" (p. 1). This report includes tables, and illustrations.
Date: September 1969
Creator: Barry, A. J.; Nair, O. B. & Miller, J. S.
System: The UNT Digital Library