See the biggest and newest construction machines, excavators, dozers, graders, all in action. Watch expert operators put dump trucks, tractors, and loaders to the test at the Demonstration Grounds in Moline, Ill. Then learn about logging in the forests of the Pacific Northwest where loggers use feller bunchers, skidders, and harvesters.
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.