A Technical and Economic Study of Candidate Underground Mining Systems for Deep, Thick Oil Shale Deposits, Phase II, Final Report.
Hoskins-WN; Upadhyay-RP; Bills-JB; Et Al
NTIS: PB/262-525 Available for Reference At Bureau Libraries :318 pages
This report covers the final results of a two-phase contract study conducted between July 1974 and October 1976. A comprehensive summary of the initial phase of the study is included. Phase I of the study involved the investigation and evaluation of all potential minerals in the Piceance Creek Basin of northwestern Colorado. Phase II called for the refinement and the detailed technical and economic analysis of the most promising system, or systems, thus disclosed. Of the several systems initially investigated and evaluated, four showed considerable merit for exploiting the deeper deposits: (1) chamber and pillar mining with spent shale backfill, (2) sublevel stoping with spent shale backfill, (3) sublevel stoping with full subsidence, and (4) block caving mining using load-haul- dumps (lhd's). Final refinement and analysis of these four systems indicated their technical feasibility over at least part of the range of conditions expected in the deeper deposits. A variety of engineering, production, and cost information is provided on each of these systems.
CP; Final Contract Report;
NTIS Accession No.
NTIS: PB/262-525 Available for Reference At Bureau Libraries
Cameron Engineers, Inc.