Accession Number : ADA122039
Title : Flame Jet Drilling and Chambering to Great Depths in Crystalline Rock.
Descriptive Note : Final rept. 1 Mar-31 Aug 82,
Corporate Author : BROWNING ENGINEERING CORP HANOVER NH
Personal Author(s) : Browning,James A.
Report Date : NOV 1982
Pagination or Media Count : 18
Abstract : A flame-jet drill consuming 34cu. m of compressed air at 20 kg/sq cm has drilled a 40 cm diameter hole in Barre, Vermont granite to a depth of 130 meters. With a cost of less than $10 per foot of hole it is recommended that depth capability be increased significantly. (Author)
Descriptors : *DRILLING, *JET FLAMES, PERFORMANCE(ENGINEERING), GRANITE, BOREHOLES, AIR COMPRESSORS, SPALLATION, OIL BURNERS, DEEP DEPTH, HOSES.
Subject Categories : Geology, Geochemistry and Mineralogy
Distribution Statement : APPROVED FOR PUBLIC RELEASE