In ENR's June 6 article “Calif. Jury Dismisses Crane School's Suit Against NCCCO,” two previous lawsuits between the National Commission for the Certification of Crane Operators (NCCCO) and California Crane School (CCS) owner John Nypl are described incorrectly. The description of a first suit relates instead to a second lawsuit, while the description of a second suit relates to the early stages of a third, separate Sonora, Calif., case that was just decided by a jury. The actual first lawsuit is not described at all in the article.In the first suit, NCCCO asserted that Mr. Nypl paid an examiner 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.