Endeavour Silver (EXK) shares soared 6.6% in the last trading session to close at $5.49. The move was backed by solid volume with far more shares changing hands than in a normal session. This compares to the stock's 41.9% gain over the past four weeks.Endeavour Silver’s share price has jumped on its announcement that the Terronera project’s mine development and surface construction has reached 77% completion.  More than $258 million of the project's budget has been spent. The Terronera mine, located in Jali ...