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).
Diamond drilling in 2019 totaled 26,122 metres in 232 holes and supported an Updated Mineral Resource Estimate of 24.5 Mt of Measured and Indicated Resources grading 1.70% copper and .34 g/t gold containing 920 Mlbs of copper and 264 koz of gold (1% copper cut-off).