Featured in this lot are two large cross section maps of Kearsarge Mine in the Virginia City Mining District in Madison County, Montana circa 1930-50s. In the Virginia City Mining District, close to Virginia City, Montana, sits the Kearsarge-Apex Mine. The Beaverhead National Forest currently includes this district. There are currently no known plans for the reopening of the Kearsarge-Apex Mine, which is closed. During its mining operations, the mine was categorized as a medium-sized producer, with only one known shaft used in the mine's underground operations. With a total length of 2,438 meters (8,000 feet), the mine's maximum subsurface depth was 122 meters (400 feet). The primary mineral that was taken out of the mine was gold; nagyagite made up the majority of the waste material. Both maps are cross section views of the underground mine, with the first and smaller map showing the incline shaft, main tunnel and main station. The top reads, "Cross Section Kearsarge / Looking West / Scale 1 in. = 20 ft." in blue lettering. The second, larger cross cut map is showing a main building, an elevator shaft, the lower tunnel, numbers 1-3 winze tunnels, various rise tunnels, the incline shaft and ore deposit spots. The top left of the map reads, "Longitudial Projection of the Kearsarge Mine Workings / Madison County Mont. / Scale, 1 in. = 20 ft.". The maps show good condition overall with wear present from their age and use over the years. Corners and edges are worn. Large map shows large creases and folds to the paper. No signs of major damage is noted. The larger map measures 31 7/8" L x 49 5/8" W, while the smaller one measures 37 3/4" L x 31" W.