For Excelsior Mining (EXMGF), the outbreak of the COVID-19 pandemic had pretty bad timing. The company was about to start copper production at its 100%-owned Gunnison copper mine in Arizona, when the consequences of the virus outbreak forced the management to put it on care & maintenance. And the Gunnison remains in "hibernation" also today.
Excelsior announced the completion of construction and start-up of wet commissioning on October 9, 2019. The delivery of mining fluids in the orebody commenced in early January, and the first copper production was expected in Q1.