Transcription of GUIDELINES FOR CORE LOGGING
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GUIDELINES FOR CORE LOGGING
Chapter 10 GUIDELINES FORCORE LOGGINGT hese GUIDELINES incorporate procedures and methodsused by many field offices and are appropriate for"standard" engineering geology/geotechnical log forms,computerized log forms, and many of the modified logforms used by various Bureau of Reclamation(Reclamation) chapter describes the basic methods for engineeringgeology core LOGGING and provides examples andinstructions pertaining to format, descriptive data, andtechniques; procedures for working with drillers to obtainthe best data; caring for recovered core; and water testingin drill holes.
and pressures for drive or push tubes used through the various intervals of the hole. 2. Drilling conditions and driller's comments — Note by interval the relative penetration rate and the action of the drill during this process (i.e., 105.6-107.9: drilled slowly, moderate blocking off, hole advancing 15 minutes per foot [.3 meter]). Unusual
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