Adex Mining Inc. engages in the exploration and development of mineral properties in Canada. The company primarily explores for tin, indium, zinc, molybdenum, and tungsten deposits. It holds 100% of the subsurface mineral rights to approximately 1,600 hectares comprising the Mount Pleasant mine area of New Brunswick, Canada. The company was founded in 1992 and is headquartered in Toronto, Canada. Adex Mining Inc. is a subsidiary of Great Harvest Canadian Investment Company Limited.