types of drills for mining, | Global Mining's Innovation in Drilling Spans . Global Mining's Innovation in Drilling Spans More Than Eight Decades . Today, supplies two types of drills for the surface mining industry.types of drills for mining,Types of Drilling RigsExamples of Various Kinds of. DRILLING .. The tricone bit was developed by Hughes Tool Co. in 1933 to drill deeper oil . of the drill cuttings by the drilling mud.
types of drills for mining