According to Nick Holthouse, Earthworks Manager at PT Batutua Tembaga Raya, the results from running the drill rigs for 11-hour, 7-day shifts were more than satisfactory, especially in the mine’s grade control program. “The rigs have performed well in the highly abrasive and dense ore types. The ability of these rigs to cleanly lift the heavy cuttings produced while drilling is paramount in achieving a good quality sample, which is essential to the operation’s grade control program.” Using the PowerROC T50, 17.5 m were drilled per hour and rig with an average fuel consumption of 21.7 liters per hour, which enabled high productivity and efficiency.
Taufik Pribadi, Project Manager, PT Madhani, says: “During startup, an Atlas Copco service engineer provided us with training on regular troubleshooting, guided us on how to view the hydraulics and electric diagram and explained the structures and functions of the PowerROC T50. “We now have the knowledge to perform troubleshooting, but if there is something that is beyond our scope, we can call the service team and get a quick response. “Fortunately, we haven’t met with any problems so far. The PowerROC T50 with its straightforward system is very stable.”
The drill rigs achieved a net penetration rate of up to 3 m/min. Hole cleanliness was guaranteed thanks to the high flushing air speed, which resulted in straight holes with no deviation and a minimized risk of bit jamming. Having operated the PowerROC T50 during startup, Drilling Trainer Tidar Sumarsomo emphasizes the importance of clarity and simplicity when it comes to rig controls. “The PowerROC T50 is easy to operate. I can start drilling easily after a short instruction and the drilling is is really fast.” he says. “Most of all, I don’t need to worry about complicated structures that I don’t understand. All mechanical and electrical connections are marked and labelled clearly. “It’s just like a beast,” he concludes. “Powerful but easy to understand.”
Epiroc operated under the name "Atlas Copco" until January 1, 2018.