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Welders will connect two, 80-foot lengths of rail by a thermite welding process that superheats aluminum, iron oxide and alloy elements to produce molten steel and permanently join the rails. Each 80-foot rail weighs more than 3,000 pounds.

In all, more than 29 miles of rail will be installed along the 7.3-mile project. Evraz Rocky Mountain Steel in Pueblo, Colo., manufactured the rail. Read more.

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