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The United States Nuclear Regulatory Commission (NRC) defines depleted uranium as uranium with a percentage of the 235 U isotope that is less than 0.711% by weight (see 10 CFR 40.4). The military specifications designate that the DU used by the U.S. Department of Defense (DoD) contain less than 0.3% 235 U. [ 15 ] In actuality, DoD uses only DU ...
The Blue Ridge Parkway is a National Parkway and All-American Road in the United States, noted for its scenic beauty.The parkway, which is the longest linear park in the U.S., [3] runs for 469 miles (755 km) through 29 counties in Virginia and North Carolina, linking Shenandoah National Park to Great Smoky Mountains National Park.