The Prospectors and Developers Association of Canada (PDAC) represents the interests of the Canadian mineral exploration and development industry. The association was established in 1932 in response to a proposed government regulation that threatened the livelihood of Ontario prospectors. A brief history of the association is available here. Today, 76 years after its founding, the association is a national organization with 7684 individual members (including prospectors, developers, geoscientists, consultants, mining executives, and students, as well as those involved in the drilling, financial, investment, legal and other support fields) and 1081 corporate members (including senior, mid-size and junior mining companies and organizations providing services to the mineral industry).