Deep Rotary Core Drilling in Ice.
Rotary drilling equipment was modified and used to obtain cores from glaciers in Northwest Greenland, Byrd Station and Little America V, Antarctica. Using cold compressed air, specially designed bits and other modifications, cores were obtained to 1345 feet in Greenland, 1000 feet at Byrd Station an...
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Format: | Text |
Language: | English |
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1973
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Online Access: | http://www.dtic.mil/docs/citations/AD0758156 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0758156 |