New Horizons in Drill Development,
NEBRASKA UNIV LINCOLN
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New materials for cables and cutters are discussed in relation to lightweight and efficiency. Kevlar, used as the strength member in an electromechanical cable, reduces weight by 70 percent and allows the use of smaller diameter sheaves and winches. Efficient cutters and core breakers are discussed along with a selection of materials suitable for drilling in cold ice. Use of small diameter hermetically-sealed heaters in a ring are also discussed in complete this 200 m system which can be backpacked into remote areas. This drill can take 7.6-cm or 10-cm diameter cores in lengths varying from 1- to 2-m. The approximate weight of the system is 40 kg and the cube is approximated 1.2 cu m.