Allis-Chalmers, Factories

Urban spelunking: Crew unexpectedly rediscovers an old Allis-Chalmers tunnel

The Weekend Historian

Urban spelunking: Crew unexpectedly rediscovers an old Allis-Chalmers #tunnel

Source: Urban spelunking: Crew unexpectedly rediscovers an old Allis-Chalmers tunnel

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