Cornerstone Metals Appoints Senior Mining Advisor

Vancouver, British Columbia--(Newsfile Corp. - April 18, 2017) - Cornerstone Metals Inc. (TSXV: CCC) ("Cornerstone" or the "Company") announces the appointment of Michael Mracek, P.Eng., to its Advisory Board, effective immediately. Mr. Mracek is a professional mining engineer registered in the provinces of Ontario and British Columbia. A graduate of the University of Saskatchewan in 1970, he spent his summers working underground at Eldorado, United Keno Hill, and Placer's Craigmont sublevel caving operation. He moved to Thompson, Manitoba in 1970, where he spent 10 years with Inco, learning his craft from the bottom up. In the 1980's, he moved on to Dickenson, Amok Cluff Mining, and Terra Mines, becoming a Chief Engineer, Mine Superintendent, and finally, Mine Manager. In 1990, he moved to Timmins, where he spent 5 years for Royal Oak as General Manager at several mines including:Pamour, Hope Brook, and Colomac. Commencing in 1996, spent 11 years overseas where he worked in Ghana, Armenia, and Tanzania for Ashanti Goldfields, Sterlite Gold, and Barrick Gold in various capacities, including VP and General Manager. He returned to Canada as Chief Operating Officer for Tournigan Gold before returning to Ghana as VP and General Manager of Golden Star's Wassa operation. Since 2011, he has provided consulting services through Mracek Consulting, working for major consulting firms, including SRK and SNC-Lavalin, advising on various studies, including feasibility studies. The Company is pleased to have Mr. Mracek join the group.

Over the past 6 months, the Company has taken significant steps to strengthen its Boards of Directors and Advisors with the addition of experienced, highly regarded professionals in their respective fields of expertise. Collectively, the Company now has the advantage of a deep and broad skill set ranging from financing, to mineral exploration, to mine development, construction and operations, including mining and processing - a unique attribute compared to many of its peers.

About Cornerstone Metals Inc.

Cornerstone's objective is to advance exploration/development stage copper and precious metals properties to production in the Americas. The Company's Management and Board Core Competence is in exploration, permitting, development, construction, and operation of mining projects.

Cornerstone owns 100% (subject to 1.5% NSR) of the West Jerome property, near Jerome, Arizona, on the west side of Freeport McMoRan patented lands. The property, in a Volcanogenic Massive Sulfide camp, is a high-grade, massive sulfide target located 2.4 km south of the past-producing United Verde (32 million tons grading 4.4% copper, 1.5 oz/t silver and 0.04 oz/t gold). The West Jerome property has attractive untested drill targets.

On Behalf Of Cornerstone Metals Inc.
per:

"Paul Cowley"
CEO & President

For further information, please contact:

Paul Cowley
Tel: (604) 340-7711
Email: pcowley@cornerstonemetals.ca

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