Relationship of the mineral deposits at the Los Filos project. (Credit: Leagold Mining)
MEXICO – Underground development of the Bermejal gold deposit has begun says Leagold Mining. The Bermejal underground will be mined concurrently with the Los Filos open pit in Guerrero.
“The contribution from underground mining at Bermejal will add approximately 150,000 oz. per year to the operation and bring the combined production rate to 350,000 oz. per year once fully operational,” said Leagold CEO Neil Woodyer.
Surface preparation is done, permits received and the portal for a 3,136-metre-long exploration ramp and cross-cut development has begun. The US$13 million ramp will provide access to the high grade underground deposit. Two raise-bored ventilation raises totaling 560 vertical metres will also be excavated.
Test mining is planned beginning in the first half of 2018 will provide a large scale sample for metallurgical testing and leaching on the existing leach pads.
Leagold says the underground drilling program is now more than 50% complete. The Central zone returned 7.2 g/t gold over 18.8 metres (all true widths), 8.0 g/t over 20.3 metres, 16.8 g.t over 8.6 metres; 25.3 g/t over 29.1 metres, 13.0 g/t over 21.6 metres, 17.6 g/t over 13.3 metres, and 18.4 g/t over 27.0 metres. The last four values were capped at various amounts. The East zone returned 6.8 g/t gold over 13.34 metres.
The Bermejal underground project is explained in more detail at www.Leagold.com.