Ming is a copper-gold massive sulfide deposit located in northwestern Newfoundland in a region that has a strong history of gold, base metal and industrial minerals mining. The two dominant types of mineralization at Ming are stratiform volcanogenic massive sulphide (Ming Massive Sulphide) and disseminated sulphide stringers (Lower Footwall Zone).
Production began in late 2011 and Rambler produced approximately 15 kozs of gold in five months from a high-grade gold area, known as the 1806 Zone. This early production from the gold zone allowed Rambler to generate revenue while the company constructed a copper flotation circuit at the Nugget Pond Mill approximately 40 km from the Ming mine. The processing facility includes a conventional crushing, grinding and flotation process that has been in commercial production since the second quarter of 2013. Recoveries range between 94% and 96% for copper and 65% to 70% for gold.
Rambler expanded the mill throughput capacity to 1,250 tpd in 2017 and the current mine plan from the June 2015 Pre-Feasibility Study has production continuing through 2036. The Proven and Probable Reserves (diluted and recovered) as of January 2018 are 8.7 Mt of ore containing 1.71% copper and 0.4 g/t gold (1.0% CuEq cut-off).
Phase II of the mining process improvement program is complete and production during the second quarter averaged 1,309 tpd including a new one-day record throughput of 1,493 tpd. Rambler will evaluate the potential to further increase production to 2,000 tpd.
Underground exploration and diamond drilling will continue, aiming to increase available resources and reserves through continued exploration within the Ming mine mineralized trend.