Gran Colombia and Medoro Announce Merger to Become Leading Colombian Gold Company

(MARKETWIRE via COMTEX) -- Gran Colombia Gold Corp. /quotes/comstock/11t!e:gcm (CA:GCM 1.57, -0.02, -1.26%) and Medoro Resources Ltd. /quotes/comstock/11t!e:mrs (CA:MRS 2.12, +0.04, +1.92%) are pleased to announce...