Goldcorp - Porcupine Gold Mines – Hoyle Deep #2 Winze Project

Cementation was originally awarded and carried out the design engineering work for the Hoyle Deep #2 Winze Project by Goldcorp Canada. Under a separate scope of work Cementation was awarded the shaft sinking and headworks development which in effect changed the project from a traditional shaft sinking contract into a design-build project. This established continuity from design work to construction and one point accountability, all of which were beneficial to the overall construction schedule.

Internal shaft sinking projects are known as some of the most technically and logistically challenging projects and it is no coincidence that Cementation is recognized for its experience and expertise in executing winze shaft sinking.

Goldcorp Inc. -  Red Lake Gold Mines Project

The Red Lake Gold Mines, located in Northwestern Ontario, is owned and operated by Goldcorp Inc. The mine is comprised of the Red Lake Complex and the Campbell Complex.

In 2003, Cementation secured the contract to design and sink the No. 3 Shaft, and design the associated surface plant infrastructure. Merging engineering and construction capabilities, the work was carried out as a design-build project. The No. 3 Shaft, a key element in the mine's expansion, was sunk 2179 m from surface with a diameter of 6.55 m. Upon completion of the shaft, Cementation was retained to operate the shaft facilities.

Concurrent with the sinking project, Cementation was awarded and started the raise boring of the ventilation circuit for the new No. 3 Shaft in 2005. This project included the drilling of two raises at a diameter of 4 m and two raises at a diameter of 5.52 m for a total of 1945 m. The two raises with diameters of 5.52 m were completed in-line for a total length of 1010 m. This project set a record for the longest, largest diameter single pass raise bored in the Canadian Shield at 694 m long, 5.52m in diameter and completed without any injuries.

Hecla Mining Company - Lucky Friday #4 Shaft Project

Cementation is carrying out the design and development of the #4 shaft winze at the Lucky Friday Mine for Hecla Mining. Initially Cementation worked with the Hecla group in the prefeasibility costing and scheduling along with preliminary design work for their proposed internal shaft. Work on Hecla's historic Lucky Friday Mine located just outside of Coeur d'Alene in Northern Idaho began in November 2009. The scope includes the design and sinking of an 18 ft diameter shaft to a depth of 8800 ft below surface. This is an internal shaft, the top of which is at the 4900 ft depth level of the existing underground mine. Other associated tasks include lateral development, excavation and construction of an underground hoist station and 16 ft diameter ore bins that are 70 ft high, and installations of the hoisting plant and sinking equipment underground.

Additional scope commenced in 2012 and includes the refurbishing of the existing Silver Shaft to surface.