The Canadian Rufli-Rand Electro-Mechanical Core Drill and Reaming Devices,
DEPARTMENT OF THE ENVIRONMENT CALGARY (ALBERTA) NATIONAL HYDROLOGY RESEARCH INST
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An electro-mechanical ice core drill of medium depth capability, was built in 1980. The design is based on previously established principles. New to the design is a geodesic dome structure which serves both as a structural unit to support the central fixed tower and to provide shelter for the drill crew. The whole unit can be packed in shipping crates weighting a total of 760 Kg, and by suitable disassembling, may be fitted into a Helio-Courier STOL aircraft in about five loads, including the generator. The ice core is about 96-100 mm in diameter and averages about 1 m in length. The drum has 270 m of cable with a tensile strength of 4200 Kg. The deepest holes to date are 103 m, in ice at -29 C, Mt. Logan, 5340 m altitude and 202.4 m in ice at - 51 C, South Pole, 3100 m altitude. Currently being constructed, is an electro-thermal drill unit which will connect directly into the electro-mechanical cable termination.