Calibre Mining Corp., together with its subsidiaries, engages in the exploration, development, and mining of gold properties. The company explores for gold and silver deposits. It holds 100% interests in the Limon Mine & Mill property, the Libertad Mine & Mill property, and Pan Gold mine located in Nicaragua; and the Valentine Gold mine located in the Central Region of Newfoundland and Labrador, Canada, as well as the Gold Rock project located in Nevada, the United States. The company was formerly known as TLC Ventures Corp. and changed its name to Calibre Mining Corp. in June 2007. Calibre Mining Corp. was incorporated in 1969 and is headquartered in Vancouver, Canada.