Founded by Jerry Mahoney from Killarney, Ireland in 1851. The Mahoney Mine Claim purchased from Alvinza Hayward. Merged with the Wildman Mine and reached a depth of 1200 feet. Produced $5 million in gold. Later part of Lincoln Consolidated Co.
Marker is located at the north end of the parking lot on Gopher Hill Road next to the Wildman Mine Powder House. Marker is in this post office area of Sutter Creek.