Two final court dates have been set for mid-April in the negligent homicide trial of James F. Lomma, the owner of the Kodiak tower crane whose fatal collapse killed two workers in Manhattan nearly four years ago. For more than a month, the owner of the equipment rental firm has been the focus of charges that say he was responsible for the 2008 deaths of union crane operator Donald Leo and sewer worker Ramadan Kurtaj.With the prosecution resting its case, Lomma's attorneys began calling as witnesses in late March two crane forensic engineering experts employed by Haag Engineering. The defense
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.