Pub. L. 100-668, tit. II, sec. 206
MINERAL RESOURCE USE IN RECREATION AREAS.
SEC. 206. MINERAL RESOURCE USE IN RECREATION AREAS. Section 402(b) of the Act of October 2, 1968 (82 Stat. 928; 16 U.S.C. 90c–1b) is hereby amended to read as follows: “The lands within the recreation areas, subject to valid existing rights, are hereby withdrawn from all forms of appropriation or disposal under the public land laws, including location, entry, and patent under the United States mining laws, and disposition under the United States mineral leasing laws: Provided, however, That within that portion of the Lake Chelan National Recreation Area which is not designated as wilderness, sand, rock and gravel may be made available for sale to the residents of Stehekin for local use so long as such sale and disposal does not have significant adverse effects on the administration of the Lake Chelan National Recreation Area.”.