The world’s largest open copper mine, Kennecott Copper Mine in western Salt Lake County, needed to transport ore from the Oquirrh Mountains and then release the tailings in a water slurry to a settlement pond 58,000 feet away. The solution was double shifts working to produce and transport 11 tons of 12-foot-long pipe sections that fit the curves of the mountainside — ahead of schedule and with zero leaks.