Twin Toyo hammers Horizontal and vertical drilling The machines are used for horizontal and vertical line in a pattern, most quarries use them exlusively, simple, easy to line up cost effective ease of mobility. Drill the holes and then use dynamite to blast off a section of rock block 1-2" Drilling hole diameter Drill depth is 20' and can be extended via extension couplers Drill is air driven, needs 600 CFM Tooling can be purchased from Traxxon Rock Drills and Derusha Supply Retail price back in 1985 was $28,000
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