- § 641. Establishment and maintenance of program for exploration; financial assistance
- § 642. Exploration contracts
- § 643. “Exploration” defined
- § 644. Advice and assistance by Government departments and agencies; expenditure of funds
- § 645. Repealed. Pub. L. 93–608, § 1(13), Jan. 2, 1975, 88 Stat. 1969
- § 646. Authorization of appropriations
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