Mining In Maine | The Diggings™
Maine has 788 identified mines listed in The Diggings™. The most commonly listed primary commodities in Maine mines are Silver, Copper, and Lead .At the time these mines were surveyed, 174 mines in Maine were observed to have ore mineralization in an outcrop, shallow pit, or isolated drill hole—known as an occurance mine. 1 Maine has 292 prospect mines. 2 319 mines were in production at