Building and mining machines and their components, particularly, mining/winning machines, namely, coal plows, coal augers; machines for loading and/or transporting mining products and other bulk materials, particularly, earth moving machines, namely, back hoes, graters, loaders, scarpers and scrapers; conveyors, namely, continuous conveyors for bulk material, particularly, scraper chain conveyors, namely, curve conveyors and roller curves, belt conveyors, platform conveyors, link conveyors, perpendicular conveyors, disc retarding conveyors, worm conveyors, vibrating conveyors, bunker discharge conveyors, pneumatic conveyors; parts of the said conveyors, namely, conveyor pans, pan conveyor connections, driving stations and scrapers; powered anchorage or shifting devices for anchoring resp shifting conveyor means and their drive means; parts of the anchorage and shifting devices, namely, guide rods and walking troughs; parts of mining machines, namely, chain tensioners, guide means, plow guidances and chain guidances for plow chains, guidances and chain guidances for chain augers, side plates for conveyors, cable ducts, bits and bit holders, chains, chain wheels, and chain drums; drive mechanisms for mining/winning machines, including tooth racks and pinion racks

[ Repair and maintenance of mining machines and parts thereof ]