Cementation introduced large-diameter hard rock raise boring into Canada at Goldcorp’s Red Lake Gold Mines. This bored shaft, completed in 2006, established a record for the largest diameter and longest single pass raise bore in the Canadian Shield, 694 m in length and 5.52 m in diameter.
Cementation’s current North American fleet consists of four drills: the Robbins 97R, the Robbins 123R, and two Strata 950 drills. Depending on rock type and conditions, the Strata 950 can raise up to 1000 m in length and 6 m in diameter.
