Birmingham, Ala.-based Vulcan Materials Co. has agreed to pay the Illinois Dept. of Transportation $40 million to settle a 2001 lawsuit contending the aggregates producer damaged a former major artery that bisects an operating company quarry in McCook, Ill., a suburb of Chicago. The road has been closed for more than a decade after it shifted suddenly. Photo: Vulcan Materials Aggregate mining was the cause of the Joliet Road collapse, the state of Illinois contended. Vulcan Materials disputed the claim but has agreed to pay the state DOT $40 million. The suit contended that Vulcan, the largest construction aggregate supplier
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.