Separate incidents of equipment failure caused two construction-worker fatalities in Ohio and Colorado, prompting probes and fines by the U.S. Occupational Safety and Health Administration. OSHA is looking into a July 26 scaffold collapse that killed one cement mason and injured two others at a site near Denver.The trio, employed by B-W Masonry Inc., a Denver subcontractor, were on a scaffold 30 ft in the air when it collapsed. Support planks that broke away may have been to blame, says a firm spokesman.In Defiance, Ohio, Advantage Powder Coating received a proposed $159,600 OSHA fine for 15 safety violations linked to
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.