Cementation introduced large diameter hard rock raise boring into Canada at Goldcorp’s Red Lake Gold Mines. This bored shaft was completed in 2006 and established a record for the largest diameter and longest single pass raise bored in the Canadian Shield with a raise of 694 m in length and 5.52 m in diameter.
Cementation’s current North American fleet consists of 4 drills; the Robbins 97R, the Robbins 123R and two Strata 950 drills. The Strata 950 is designed and built within the Cementation Mining Group and is our most powerful raise drill. Depending on rock type and conditions, this equipment is capable of raises up to 1000 m in length and 6 m in diameter.
The Cementation Mining Group is the largest raise boring contractor in the world with a fleet of over 50 raise drills.