Capstone Mining Reports Fatality at Cozamin Mine in Zacatecas, Mexico

VANCOUVER, British Columbia, March 19, 2018

Capstone Mining Corp. ("Capstone") (TSX: CS) is saddened to report that a fatal accident occurred at its Cozamin Mine on Sunday, March 18, 2018. An electrical technician was injured while working on an underground voltage regulator. He was transported immediately to a hospital in Zacatecas where he later passed away.

"Our heartfelt sympathy goes out to our miner's family and our entire team at Cozamin," said Darren Pylot, President and CEO of Capstone.

Operations at Cozamin were temporarily suspended yesterday, but have since resumed with the exception of the immediate area of the accident which is secured for investigation. An investigation into the cause of the accident is ongoing and the necessary authorities have been notified.

Capstone remains committed to the highest safety standards at all its operations and sincerely regrets that these efforts did not prevent this incident.

About Capstone Mining Corp.
Capstone Mining Corp. is a Canadian base metals mining company, focused on copper. We are committed to the responsible development of our assets and the environments in which we operate. Our three producing mines are the Pinto Valley copper mine located in Arizona, US, the Cozamin polymetallic mine in Zacatecas State, Mexico and the Minto copper mine in Yukon, Canada. In addition, Capstone has the large scale 70% owned copper-iron Santo Domingo development project in Region III, Chile, in partnership with Korea Resources Corporation, as well as a portfolio of exploration properties. Capstone's strategy is to focus on the optimization of operations and assets in politically stable, mining-friendly regions, centred in the Americas. Our headquarters are in Vancouver, Canada and we are listed on the Toronto Stock Exchange (TSX). Further information is available at http://www.capstonemining.com.

Cindy Burnett, VP, Investor Relations and Communications, +1-604-637-8157, cburnett@capstonemining.com