The Greenwood flotation plant and gold gravity circuit play a key role in Golden Dawn’s plans to revive nearby former mines.
With a dewatering permit now in place, Golden Dawn Minerals TSXV:GOM moves closer to trial mining at Lexington, one of its Greenwood holdings in southern British Columbia. A previous company operated the mine from April to December 2008, extracting 5,486 ounces of gold, 3,247 ounces of silver and 860,259 pounds of copper, all of which was processed about 17 kilometres northeast at the Greenwood mill, now a key Golden Dawn asset.
As dewatering takes place, the company plans to rehabilitate the mine’s two ramps and surface infrastructure. Further rehab, definition drilling, mapping and sampling would follow completion of dewatering. With new data in hand, the company intends to compile a test mine program for zones between the 1,210-metre and 1,175-metre elevations without the additional derisking of a feasibility study.
Production methods under consideration include longhole open stoping, jumbo mining and jackleg/slusher mining.
Crushing equipment and the mill, with a 200-tonne-per-day capacity expandable to 400 tpd, are slated for minor upgrades and refurbishing to prepare them for run-of-mine gold-copper feed expected from Lexington by about mid-November.
The company estimates costs between $3 million and $3.5 million to rehabilitate the mine, extract 5,000 tonnes of feed and refurbish the mill.
The 2,020-hectare property has a 2016 resource that uses a 3.5 g/t gold-equivalent cutoff to show:
- - measured: 58,000 tonnes averaging 6.98 g/t gold, 1.1% copper and 8.63 g/t gold-equivalent for 16,100 gold-equivalent ounces
- - indicated: 314,000 tonnes averaging 6.38 g/t gold, 1.04% copper and 7.94 g/t gold-equivalent for 80,200 gold-equivalent ounces
- - inferred: 12,000 tonnes averaging 4.42 g/t gold, 1.03% copper and 5.96 g/t gold-equivalent for 2,300 gold-equivalent ounces
Lexington comprises one of several former mines in Golden Dawn’s extensive Greenwood portfolio, all proximal to the company’s mill about 500 kilometres east of Vancouver. Golden Dawn’s other nearby past-producing priorities include Golden Crown, with a 2016 gold-copper resource, and the May Mac silver-gold-polymetallic project.