rotary drilling in kenya
In rotary drilling, a drill bit is attached to a length of connected drill pipe. The drill bit will be made of tough metals such as tungsten and as the drill is rotated the bit grinds up the rock.
In rotary drilling, a drill bit is attached to a length of connected drill pipe. The drill bit will be made of tough metals such as tungsten and as the drill is rotated the bit grinds up the rock.