Pneumatic Rock Drill for mining 1)Drilling holes in underground coal mine 2)Light weight 3)Water exploration 4)Grouting Pneumatic Rock Drill for mining1.Small size, light weight and less air consumption2. The drill rigs are suitable to drill holes for discharging gas, water exploration, grouting and blasting in tunnels, and widely used in mining, hydro-power station, railroad, highway and ...