Description: [ Electrical and Scientific Goods-Namely, Electrical Switches, Housings for Single and Multiple Switching Units, Electrical Connectors Both Line and Terminal Types, Ship to Shore Electrical Connectors, Aircraft and Runway Electrical Power Distribution Connectors, Highway Lighting Electrical Power Connectors, Electric Plugs and Receptacles, Low Voltage Power Distribution Boxes, Ground Fault Detectors, Electrical Circuit Continuity Detectors and Parts Therefor and Electrostatic Precipitators ]; Mining Machines for the Extraction of Bedded Materials-Namely, Continuous Miners, Long Wall Mining Machines, Short Wall Mining Machines, Kerf Cutters, Shearing Machines, Drilling Machines, Percussive Hammers, Impact Hammers; Machines for Loading, Hauling and Dumping of Minerals, Coal and Other Material-Namely, Conveyors, Endless Belt Conveyors, Conveyor Supports, Gathering Arm Loaders, Shovel Type Loaders, Scraper Type Loaders, Shuttle Car Conveyor; Mine Roof Support and Roof Maintenance Machines-Namely, Hydraulically Operated Roof Support Machines, Roof Shields, Roof Chocks, Roof Drilling Machines, Roof Bolting Machines; [ Fluid Compressors-Namely, Air Compressors, Rotary Compressors, Reciprocal Compressors, Centrifugal Compressors, Screw Compressors, Recycle Gas Compressors, Pneumatic Motors; Well Drilling Machines-Namely, Pipe, Casing and Drill Rod Handling Apparatus, Make-Up and Break-Out Machines for Assembling and Disassembling Pipe, Tubing and Rod Sections, Power Tongs, Power Slips, Kelly Drives, Pulsation Stabilizing Machines, Elevators; Mechanical Dust Collector Machines; Machines for Mineral, Coal and Chemical Processing-Namely, Thickeners, Clarifiers, Flotation Cells for the Separation of Particulate Matter from a Liquid Medium, Pumps, Ball Mills, Rod Mills, Attrition Scrubbers, Heat Exchangers, Agitators, Disc Filters, Samplers for Obtaining Samples of Material from a Flow of Minerals or Chemicals, Settlers, Mixers, Mineral Jigs, Pulp Distributors, Machines for the Recovery of Placer Gold by Washing and Screening of Sand and Gravel, Jar Mills, Crushers, Pulverizers, Pressure and Vacuum Filters, Concentrating Tables for Gravity Separation of Two or More Minerals, Vibrating Screens, Feeders and Parts Therefor ]; Metal Goods Used in Mining and General Industries-Namely, Sheaves, Pulleys, Blocks Adapted for Use with Sheaves or Pulleys; Metal Chains and Chain Conveyor Flights; Cutter Bit Blocks Adapted to Mount on Cutter Chains, Bit Holders to Hold Bits in Cutter Bit Blocks; [ Metal Scrapers of the Drag Bucket Type for Digging Earth or Ore; Metal Goods Used in Well Drilling Operations-Namely, Tong Blocks, Bumper Subs, Bushings, Casing Bowls, Clamps, Collars, Hooks, Liners, Links, Pipes, Rods, Shoes, Slips, Spiders, Subs, Tongs, Well Heads; and Parts Therefor ]; Crawler and Rubber Tire Land Vehicles for Transporting Mining and Excavation Equipment or Material; Shuttle Cars; and Parts Therefore; [ Environmental Control Apparatus, Pollution Control Equipment and Gas Cleaning Equipment-Namely, Gas Scrubbers, Air Chambers to House Bag Type Filters, Dust Valves and Air Locks; Ventilation and Gas Handling Apparatus-Namely, Fans, Centrifugal, Vane, Axial, Tube Axial and Propeller Types, Sound Attentuators for Reducing Fan Noise; Lamp Sockets; Electric Heaters Used for Vulcanizing; and Parts Therefor ]
