Construction of dams and aircraft overflights in national park units: hearing before the Subcommittee on National Parks and Recreation of the Committee on Interior and Insular Affairs, House of Representatives, Ninety-ninth Congress, second session on H.R. 4089 ... H.R. 4430 ... hearing held in Washington, DC, May 20, 1986, Volume 4
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STATEMENT OF THE PROBLEM
REGULATIONS AND POLICIES
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Advisory Circular agreement air tour aircraft noise aircraft overflights airport airspace amended AOPA bill Bureau of Reclamation California Canyon National Park Chairman Coelho commercial Commission committee concerns Congress Congressional dams Department effect environmental expanded Federal Aviation Administration Federal Power Act feet FERC fisheries flights Grand Canyon National Haleakala National Park Hawaii helicopter Hetch Hetchy System impact Interior issue jurisdiction legislation Lehman license minimum altitude monument lands Mott National Monument National Park Service National Park System Natl natural quiet O'Shaughnessy Dam Olympic National Park operations park or monument park resources park system units parks and monuments parks and national permit pilots problem prohibition projects in national Raker Act reclamation project Recreation regulations require Ryan San Francisco Secretary Section Skokcmish Smith Stat Subcommittee testimony Thank Tuolumne River Vento visitors water and power water development water projects WHEREAS wilderness areas wildlife Yosemite National Park