![]() The 2019 test program included three larger composites for optimization test work and 48 samples covering the deposit to establish the variability of the ore to the chosen flow sheet. Some additional test work was completed to support carbon loading, rheological parameters and cyanide destruction assumptions. The process flowsheet was designed based on historical test work and more recent test work carried out in 2019 for New Gold. The mine equipment fleet is planned to be purchased via various lease arrangements. The initial drill and loading fleet is planned to be diesel drive, with expansion fleet requirements being electric drive. As production requirements increase, the load-and-haul fleet will be expanded with 600 t class hydraulic shovels and 230 t payload class haul trucks. Initially, mining will be undertaken using 400 t class hydraulic shovels and 190 t payload class haul trucks. Owner-managed mining and fleet maintenance operations are planned for 365 days/year, with two 12-hour shifts planned per day. LOM activities are summarized in Appendix A. ![]() The remaining stages expand the pit to the north targeting progressively deeper ore. The second phase will target higher-grade, lower-strip-ratio ore providing mill feed over the initial years of the Project. The first stage will target suitable overburden and waste rock for construction whilst exposing near-surface, high-grade material. #Gravity circuit gold mining seriesThe open pit will be developed with a series of pushbacks. Following mining operations, stockpiled low-grade material will be processed for an additional five years, resulting in a total LOM of 22 years. Open pit operations are anticipated to run for 17 years, excluding 15–18 months of pre-production mining. Mining will be based on conventional open pit methods (drill-blast-load-haul), which are suited to the Project location and local site requirements. The estimated closure costs of C$175 million (discounted to year 22) represents management’s investment in environmental stewardship and increased ownership of its various ESG initiatives. to the site to supply power to the Project.Īt closure, all buildings will be removed, disturbed lands rehabilitated, and the property returned to otherwise functional use according to future approved reclamation plans and accepted practices at the time of closure. In addition to the site infrastructure, it is assumed that a 135 km, 230 kV transmission line will be constructed from the BC Hydro Glenannan substation near Endako, B.C. Potentially acid generating waste rock, together with tailings, will be deposited into the TSF that will be located to the north-northwest of the open pit. Overburden and non potentially acid generating waste rock not required for construction will be placed in stockpiles between the open pit and the TSF. ![]() Most of the waste material sourced from the pit will be used for construction of TSF or placed in the TSF itself. Conventional open pit mining methods will be used, initially targeting high-grade, near-surface ore for processing, with lower-grade material being stockpiled for processing at the end of the mine life. The proposed mine plan involves mining 334 Mt of ore, 586 Mt of waste rock and 87 Mt of overburden. A combined gravity circuit and whole ore leach will be used for recovering gold and silver. ![]() ![]() #Gravity circuit gold mining fullThe ore processing facilities will be expanded to ~24,700 tonnes per day (“ tpd”) (9.0Mtpa) in year 5 with full Phase 2 expansion to ~33,000 tpd (12Mtpa) in year 6 with an expansion to 41,100 tpd (15Mtpa) in year 10 and a final expansion to achieve 55,000 t/d (20 Mtpa) starting in year 11 of operation. The Blackwater Project will comprise the construction, operation, and closure of an open pit gold and silver mine and ore processing facilities commencing with a nominal milling rate of ~16,500 t/d (6.0Mtpa). ![]()
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