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Excelsior expects 12-month Gunnison ramp-up

Excelsior Mining expects the ramp-up of its Gunnison in-situ recovery (ISR) copper leach operation in Arizona, USA to take about 12 months until it is operating as planned, president and CEO Stephen Twyerould told Mining Journal.

 Cathodes rolling of f the line at Excelsior Mining's Gunnison ISR operation in Arizona, USA

Cathodes rolling of f the line at Excelsior Mining's Gunnison ISR operation in Arizona, USA

The company has been operating the field for about a quarter and has produced 99.999% copper cathodes, but is still learning how to balance fluid flow, pressure, chemistry and other aspects. "We are...

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