EXPLORATION AND SAMPLING '72

NEW AND IMPROVED SAMPLING METHODS ARE RECEIVED. IN A CONSIDERATION OF SAFETY FACTORS THE OBSERVATION IS MADE THAT THE MOST FREQUENT FATALITIES OCCUR WHEN RAISING A MAST INTO A POWER LINE OR FROM DRILLING THROUGH A BURIED ELECTRICAL CONDUIT. DANGERS INHERENT IN DRILLING ARE REVIEWED AND THE USE OF A CABLE ACTUATOR INSTEAD OF A PUSHBUTTON IS SUGGESTED. A METHOD OF DRIVING IS DESCRIBED THAT DOES NOT UTILIZE A ROPE OR THE DANGEROUS CATHEAD. FIGURES ILLUSTRATING DAMAGED SAFETY HOOKS ARE PRESENTED. THE NEW TOOLS AND TECHNIQUES IN THE DRILLING INDUSTRY INCLUDE A MOBILE SAFETY HAMMER WHOSE USE PRECLUDES POSSIBILITY OF CHIPS IN THE EYE OR IMPACTING WITH THE FINGER BETWEEN THE IMPACT BLOCK AND DRIVE WEIGHT. LOW COST COMPRESSORS OF THE MONO-BLOCK OR UNI-BLOCK TYPE ARE ALSO AVAILABLE. IN THESE, HALF THE ENGINE BLOCK SERVES AS A COMPRESSOR AND THE OTHER HALF RUNS THE ENGINE. PERCUSSION DRILLING BY HAMMER DRILLS IS ANOTHER TECHNIQUE IN USE. PHOTOGRAPHS ILLUSTRATE CORE DRILLING FOR PILES IN THE ANTARCTIC. THE PROJECT WHICH INVOLVED THE USE OF A LIGHTWEIGHT MODEL B-40-L-12 MOBILE DRILL AND THE BUILDING OF A 11 FOOT LONG CORE BARREL WITH A 14-INCH O.D. AND A 12.5-INCH I.D. IS DESCRIBED. EXPERIENCES IN THE ARCTIC ENVIRONMENT ARE REVIEWED. THE MOST USABLE INFORMATION IN PREDICTING BEHAVIOR, WAS FOUND TO BE WATER CONTENT BY VOLUME. A TYPICAL ARCTIC INVESTIGATION RIG AND A SECTIONAL VIEW OF COMPONENTS USED IN IN-HOLE SAMPLING ARE ILLUSTRATED. THE USE OF THE HOLLOW STEM AUGER IS DISCUSSED. THE AVAILABILITY IS ANNOUNCED OF A NEW DRIVER HOIST WHICH IS A 1,300 LB CAPACITY FREE SPOOL, OVERRUNNING CLUTCH TYPE SAND LINE THAT CAN BE AT ONE TIME A SAND LINE AND AT THE SAME TIME AN AUTOMATIC HAMMER ACTUATOR.

Media Info

  • Features: Figures;
  • Pagination: p. 307-19

Subject/Index Terms

Filing Info

  • Accession Number: 00230160
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 4 1973 12:00AM