Amid a growing chorus of complaints, two U.S. Senators have introduced legislation to recall Chinese-made drywall and to ban further imports until federal safety standards are developed. Meanwhile, Florida’s governor has asked the U.S. Environmental Protection Agency to help the state develop and implement chemical-testing strategies. Slide Show Photo: Florida Dept. of Health Chinese-made drywall could be the cause of household corrosion and sulfur smells. Senators Bill Nelson (D-Fla.) and Mary L. Landrieu (D-La.) introduced legislation on Mar 30 pressing the Consumer Product Safety Commission to recall Chinese-made drywall and work with federal testing labs to determine the exact level
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.