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Coeur Mining Inc. press release

Sienna Resources Amends Terms on Slättberg Cobalt-Nickel-Copper Project in Sweden

NYSE - New York Stock Exchange · Gold · Silver · Zinc · Lead · United States

Vancouver, British Columbia--(Newsfile Corp. - December 3, 2018) - Sienna Resources (TSXV: SIE) (FSE: A1XCQ0) (OTC Pink: SNNAF) wishes to announce that it has amended the option date of an exploration and option agreement (the "Agreement") with Eurasian Minerals Sweden AB, a wholly owned subsidiary of EMX Royalty Corp., originally announced on December 4, 2017, on the Slättberg Cobalt-Nickel-Copper Project in Sweden. The option date has been extended to February 28, 2019. All other terms of the Agreement remain the same.

If you would like to be added to Sienna's email list please email info@siennaresources.comfor information or join our twitter account at @SiennaResources.

Contact Information Tel: 1.604.646.6900 Fax: 1.604.689.1733 www.siennaresources.com info@siennaresources.com

"Jason Gigliotti" President, Director Sienna Resources Inc.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this press release.

copyright (c) newsfile corp. 2018

Earlier from Coeur Mining Inc.