The Northwest Territories Geological Survey (NTGS) has thousands of donated geological records from past exploration projects and closed mines. The archives contain original information, including field notes and maps, air photos, drill logs, and hand samples. There are also geological reports and maps, assays, thin sections, proposals, news clippings, annual reports and press releases. This material has been donated from Ptarmigan Mine, Terra Mine, Con & Giant Mines, Discovery Mine, Salmita, Tundra and other private sector entities. Although most of the material is from the 1970s and 1980s, some dates back to the mid-1930s. A database of digitized archive files is being constructed so that this information can be accessed remotely to support future research and mineral exploration in the Northwest Territories.