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During the last decade,DTH impactors(also called DTH hammers) have grown by leaps and bounds and a lot of specialized manufacturing enterprises with tremendous strength have sprung up.Their products have been popular in the country due to their supreme quality.The paper compiles

during the last decade, DTH impactors (also called DTH hammers) have grown by leaps and bounds and a lot of specialized manufacturing enterprises with tremendous strength have sprung up. Their products have been popular in the Country duo to their supreme quality. The paper compiles the relevant

Doorfoc Inc. is a hydraulic rock drills manufacturer based in Finland, and its products are popular in domestic market for theri excellent qualiy. The paper describes the sepcifications of hydraulic rock drillsf from the company, in expection of offering experience for the development of