| http://www.w3.org/ns/prov#value | - r region C. Drill operating machinery 24 including a prime mover, compressor, pumps etc. is supported in region C while an elongated drill mast 26 (which is mounted for movement between a generally horizontal transport position and an upright operating position) and its associated equipment e.g. drill pipe make up and break out equipment 28, are disposed in region B. A swinging pipe handling arm 3
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