Hecla Announces Production Decision at San Sebastian - "The following is a summary of high-level life of mine economic assumptions of surface mining operations, as outlined in the Preliminary Economic Assessment (PEA) by AMC Mining Consultants (Canada) Ltd., to be completed within 45 days of this announcement.1,2 The numbers shown are subject to change that is not anticipated to be material." More
- 09/16/15 | Item |

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