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KRAZ truck with a MIG-15 turbojet engine used to clean and blow-dry the runway in winter. Domodedovo airport, Moscow, Russia.
4,500 horsepower boring machine,Heidi, breaks through at the final section of Gotthard Base Tunnel, the worlds longest
Cutterhead of the worlds largest-diameter tunnel boring machine, which began to dig the State Route 99 tunnel beneath downtown Seattle in summer 2013.