Photo by Tony Illia for ENR Aaron Valencic, vice president of sales for Dust Control Technology, demonstrated the company's largest model at MINExpo. Related Links: At MINExpo, Iron Is Hot Despite Cooling Commodities Download ENR's Free Mobile News App Today! Controlling Dust on Road Crews' Daily Grind Dust control can be a costly and time consuming task, requiring large amounts of water, manpower and horsepower. However, a new mega-sized air-and-water cannon may soon make dust less of a drain on resources.Last month, Peoria, Ill.-based Dust Control Technology unveiled the company's biggest DustBoss machine yet during the MINExpo show in Las
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.