GR Silver Mining Ltd. - is pleased to announce that it has made the final option payment of CDN$2.5 M and issued 1,500,000 common shares to SSR Mining Ltd., as required under the San Marcial option agreement dated April 17, 2018 . SSR Mining's subsidiary, Silver Standard México, S.A. de C.V., has also been granted a 0.75% net smelter returns
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