Related Links: Obituary: George E. Logue Sr. Caterpillar Chronicle: History of the Greatest Earthmovers A contractor, inventor and manufacturer, George E. Logue Sr. spent his life collecting and maintaining antique tractors. On April 10, heavy-equipment enthusiasts will have the rare opportunity to buy Logue's hoard at an unreserved auction."Almost 100% of the auction is antique tractors, which is unusual for us," says Scott Edwards, territory manager for Ritchie Bros., which will hold the auction at Logue's farm in Trout Run, Pa.The storehouse of nearly 100 pieces of vintage machinery also includes parts and other heavy equipment from construction's past. Among
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.