The DTH/ ITH drilling quickly became popular for production drilling in open stoping, because of its productivity, and straight hole accuracy. ITH technology can be used for drilling up holes as well as down holes. Assuming two or three shifts/day, a single rig has a capacity of about 60,000-80,000 drilled . Therefore, to obtain high utilization a certain scale of mining is required.

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ITH Drilling Technology

Image of ITH Drill Pipe

The straight holes capability means that ITH rigs can be employed in large-scale mines to drill hole lengths up to 75 m. This degree of accuracy allows mines to space sub-levels further apart, providing substantial savings on the development of drilling drifts.

Material Specification

Tensile Strength: 100,000 PSI
Yield Strength: 80,000 PSI


15 Percent

Tool Joints

Surface Hardness 58- 62 HRC
Core Hardness 32 – 36 HRC