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Research on Constitutive Relations of Coal, Annual Report, 1972.

Authors
Ko-HY; Gerstle-KH
Source
NTIS: PB/223-743 Available for Reference At Bureau Libraries :213 pages
Link
NIOSHTIC No.
10000852
Abstract
Most of the studies performed during 1972 were done on coal from two sources: the Old Ben Mine #22 in Illinois, and the Bruceton experimental mine of the Bureau of Mines in the Pittsburgh seam of Pennsylvania, which may be considered typical of coal sources of economic importance in the midwestern and eastern parts of the United States. While the researchers were restricted to grab sampling within the Old Ben Mine to minimize interference with commercial operations, they received active help in securing material from the Bruceton mine under controlled conditions of location and orientation, which permitted them to attempt a study of the variation of coal properties over the depth of the Pittsburgh seam. The study involved hoek cell tests of the Old Ben and Pittsburgh coal, cubical tests, zonal testing of the Pittsburgh coal, tests for compressive strength, tests for tensile strength behavior of coal under sustained loads, and petrographic investigation.
Publication Date
19730101
Document Type
CP; Final Contract Report;
Fiscal Year
1973
NTIS Accession No.
PB-223743
NTIS Price
A11
Identifying No.
OFR 58-73
NIOSH Division
DRC;
Source Name
NTIS: PB/223-743; Available for Reference At Bureau Libraries
State
CO; IL; PA;
Performing Organization
University of Colorado
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