BRIEF-Endeavour Silver says Produced 1.35 mln Oz Silver And 13,208 Oz Gold in Q1 2018

* ENDEAVOUR SILVER PRODUCES 1,350,840 OZ SILVER AND 13,208 OZ GOLD (2.3 MILLION OZ SILVER EQUIVALENTS) IN THE FIRST QUARTER, 2018; PROVIDES UPDATE OF THE EL COMPAS MINE DEVELOPMENT PROJECT