Hoover Dam transformer explodes; no one hurt

BOULDER CITY, Nev. (AP) — A transformer exploded Tuesday at Hoover Dam, producing a cloud of thick, black smoke and flames that were quickly extinguished. No one was hurt and electricity continued to flow from one of the nation’s largest hydroelectric facilities, authorities said.“There is no risk to the power grid,” according to Jacklynn L. Gould, the federal Bureau of Reclamation’s regional director for the Lower Colorado Region. The fire ignited around 10 a.m. an