A jury acquitted a second supervisor in the Deutsche bank fire trial. The jury acquitted Jeffrey Melofchik, the safety supervisor for Bovis Lend Lease, the principal contractor during the demolition of the structure at Ground Zero in New York City, of charges that included manslaughter and criminally negligent homicide. A fire during asbestos abatement work in 2007 killed two New York City firefighters. Less than 24 hours earlier, the same jurors had cleared Salvatore DePaola, the abatement supervisor for John Galt Corp. One more Galt employee, Mitchell Alvo, still is awaiting a verdict by the trial judge in State Supreme
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.