Adex Mining Inc. is a Toronto, Ontario, Canada-based mining exploration company engaged in the development of its wholly owned Mount Pleasant Mine property in Charlotte County, New Brunswick, Canada. According to a Government of Canada report, Mount Pleasant is "North America's largest tin deposit and the world's largest reserve of indium." The company's stock trades on the TSX Venture Exchange under the symbol ADE.
Adex holds 102 mineral claims at Mount Pleasant covering approximately 1,600 hectares (4,000 acres), as well as 405 hectares (1,000 acres) of surface rights. Mount Pleasant's Fire Tower Zone contains tungsten-molybdenum mineralization, and is the site of a past-producing tungsten mine operated by BHP Billiton from 1983 to 1985. The property's North Zone is the focus of tin, indium and zinc exploration.