November 2013. From GeoDrilling International.
Officially released last year, Rockmore International’s ROK 500DH down-the-hole (DTH) hammer is part of the company’s emerging Deep Hole series.
Designed to increase drilling effectiveness in deep-hole applications, the ROK 500DH incorporates engineering advancements for DTH drilling in geothermal, exploration, water-well, and other mining and construction sectors.