CFR › Title 43 › Part 3590Part 3590 — Solid Minerals (Other Than Coal) Exploration and Mining OperationsSubpart 3590 — Solid Minerals (Other Than Coal) Exploration and Mining Operations—General§ 3590.0-1— Purpose.§ 3590.0-2— Policy.§ 3590.0-3— Authority.§ 3590.0-5— Definitions.§ 3590.0-7— Scope.§ 3590.2— Responsibility of the authorized officer.