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map background search result map search result 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 Map of Principal Claims and Workings in Central Part of Tombstone District Pump Shaft 700 Level, Underground Workings and Geology Sketch of Workings between Silver Thread 400 and Empire 300 Geologic Map of Tombstone District Contention Mine Underground Plan Tombstone Underground Workings Showing Silver Thread, Empire, and Tranquility Shafts Head Center, Cross Section through A-A' Pump Shaft Cross Section Tranquility Shaft 100 Level Contention, Pump Shaft 1000 Level Contention, Section through West Side Shaft and Pump Shaft Pump Shaft 1000 Level, Underground Workings Section through Contention Cross Cuts Pump Shaft 600 Level, Underground Workings and Geology Pump Shaft 400 Level, Underground Workings and Geology Tranquility Shaft, Plan of Underground Workings Contention, Pump Shaft 600 Level