43 C.F.R. § 3592.2 Maps of underground workings and surface operations.
Title 43 - Public Lands: Interior
Maps of underground workings and surface operations shall be drawn to a scale acceptable to the authorized officer. All maps shall be appropriately marked with reference to Government land marks or lines and elevations with reference to sea level. When required by the authorized officer, vertical projections and cross sections shall accompany plan views. Maps shall be based on accurate surveys and certified by a professional engineer, professional land surveyor or other professionally qualified person. Accurate copies of such maps or reproductive material or prints thereof shall be furnished by the operator to the authorized officer when and as required.
Title 43: Public Lands: Interior
PART 3590—SOLID MINERALS (OTHER THAN COAL) EXPLORATION AND MINING OPERATIONS
Subpart 3592—Plans and Maps
§ 3592.2 Maps of underground workings and surface operations.
