Canadian Mining Journal


COPPER: Excelsior updates progress at Gunnison in situ project

ARIZONA – Excelsior Mining Corp. of Vancouver is developing the Gunnison in situ copper project in Cochise County for production beginning in Q4 2019. Work is progressing on all fronts.

Work is underway to prepare the Gunnison in situ copper project for production in before the end of this year. (Image: Excelsior Mining)

The Gunnison project has always been easily accessible. Thanks to the new road south of highway I10, the production wellfield is as well. The property has direct access to road, rail, power and water.

Excelsior has five rigs on site working on collar drilling and installation of the cement casings of the initial wells. The entire wellfield – 41 production wells and 22 compliance wells – should be complete by July this year.

A 3.2-km pipeline is being constructed to connect the processing facilities to the wellfield. The launch and receiving pits are done, and horizontal boring scheduled to begin in March. The pipeline is to be complete by May 2019.

Excelsior is ramping up the staff hiring process, including Brent Berg as environmental, health and safety manager. He is a former president of Cameco Resources.

Additional information about the Gunnison copper project can be found in the technical report at