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Improved Design of Room and Pillar Mining.

Authors
Bieniawski-ZT
Source
NTIS: Et/11428-t1
Link
NIOSHTIC No.
10000435
Abstract
MISSING
Document Type
CP; Final Contract Report;
NTIS Accession No.
ET/11428-T1
NTIS Price
Identifying No.
Contract - G-11428P
NIOSH Division
PRC;
Source Name
NTIS: Et/11428-t1
State
PA;
Performing Organization
Pennsylvania State Univ.
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