power operated drilling machinery; namely, rock drilling rigs; feeders and positioning guides for rock drills and core drills; rod handling equipment; namely, mechanized grippers and reciprocating chucks; attachments for rock drills and core drills; namely, rod holders, rod racks, high torque gear boxes, gripping chucks, hydraulic power units, and hydraulic rod tongs

Stationary and Movable Rock Drilling Rigs; Feeding Apparatus for Rock Drills and Core Drills; Positioning Apparatus for Rock Drills and Core Drills; Rod Handling Equipment Consisting of Mechanized Gripping and Reciprocating Chuck Machinery for Rock Drills and Core Drills; and Accessories for Rock Drills and Core Drills-Namely, Rod Holders, Supports, Wire-Line Hoists and Catheads, Rod Racks, High Torque Gear Boxes, Gripping Chucks, Power Pack Housings, Hydraulic Power Units, Casing Clamps, Flu...