7 Machines for use in building and underground mining, construction, ground consolidation and tunneling, namely, mineworking machines, excavating machines, tunnel boring and drilling machines, spraying machines, man lifting machines, elevators, rock scaling machines, lifting installations for material and personnel transport in underground construction; machine tools for drilling and boring, mining drill sharpeners, power-operated spray guns, all of the foregoing for use in building and underground mining, construction, ground consolidation and tunneling; electric power tools, namely, saw machines, electrical drills, electrical hammers; pneumatic tools, namely, pneumatic conveyors, pneumatic hammers, pneumatic transporters; pneumatic control mechanisms as integral parts for machines, engine and motors; machines and apparatus for material handling, lifting, drilling, charging, blasting, scaling, spraying, haulage and transportation, and parts thereto, in particular, rock supporting machinery, roof bolters, rock drills, pneumatic hammers, nozzles being parts of spraying machines, cranes, hoists, shotcrete spraying machines, robotic, platform, and spraying booms for the distribution of concrete, air compressors, high pressure washers, high pressure pneumatic pumps, mechanical cable reels, gas and fluid tanks being parts of machines, gas and electric welding machines; concrete and cement mixers; mobile elevating work platforms