Related Links: Read the commission's draft report In a harsh critique of the nation’s current policy, or lack of policy, regarding spent nuclear fuel and other nuclear waste, a presidentially appointed panel said new storage options for nuclear fuel-- in addition to the site under Nevada's Yucca Mountain--must be investigated, and that a new federal agency to deal with nuclear waste should be created. The commission also urged use of interim storage sites while a long-term repository or repositories are developed. "Put simply, this nation’s failure to come to grips with the nuclear waste issue has already proved damaging
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.