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map background search result map search result map Toughnut Mine Second Level Assay Map Head Center and Grand Central Claims Map Sketch of Workings between Silver Thread 400 and Empire 300 Pump Shaft 2nd Level, Workings and Geology Vizina Underground Workings and Tombstone Surface Plan Map of Principal Claims and Workings in Central Part of Tombstone District Sketch of Workings between Silver Thread 400 and Empire 300 Toughnut Mine Assay Sheet, Samples 17657 to 17917 Sulphuret - West Side Mine, Assay Map Toughnut Mine Stopes Above Second Level Tombstone Underground Workings Showing Silver Thread, Empire, and Tranquility Shafts Head Center, Cross Section through A-A' Herschel Mine Shaft Map Old Guard and Herschel Map Contention, Section through West Side Shaft and Pump Shaft Toughnut Mine Underground Workings 2nd Level Pump Shaft 1000 Level, Underground Workings West Side 3rd Level, Underground Workings and Geology Tombstone Topographic Map Showing Southern Tombstone Empire Shaft Underground Workings