Which nuclear waste repository near Las Vegas Valley is represented by children's cartoon character Yucca Mountain Johnny?
Yucca Mountain Johnny: Yucca Mountain Johnny is a cartoon miner created by the United States Department of Energy (DOE) to present information to children on nuclear waste disposal and the Yucca Mountain Project. Yucca Mountain nuclear waste repository: The Yucca Mountain Nuclear Waste Repository, as designated by the Nuclear Waste Policy Act amendments of 1987, is to be a deep geological repository storage facility within Yucca Mountain for spent nuclear fuel and other high level radioactive waste in the United States. Yucca Mountain nuclear waste repository:  The site is located on federal land adjacent to the Nevada Test Site in Nye County, Nevada, about 80 mi northwest of the Las Vegas Valley.
Yucca Mountain Nuclear Waste Repository