Pub. L. 100-696, tit. V, sec. 506
withdrawals for kofa national wildlife refuge
withdrawals for kofa national wildlife refugeSec. 506. Subject to valid existing rights, all federally owned lands within the Kofa National Wildlife Refuge as of the date of enactment of this title are hereby withdrawn from all forms of— (a) entry, appropriation, or disposal under the public land laws; (b) location, entry, and patent under the United States mining laws; and (c) disposition under all laws pertaining to mineral and geothermal leasing.