43 C.F.R. § 3598.3 Service of notices, instructions and orders.
Title 43 - Public Lands: Interior
The operator/lessee shall be considered to have received all notices and orders that are mailed by certified mail and a receipt received by the authorized officer. Verbal orders and notices may be given to officials at the mine but shall be confirmed in writing in accordance with §3598.2 of this title.
Title 43: Public Lands: Interior
PART 3590—SOLID MINERALS (OTHER THAN COAL) EXPLORATION AND MINING OPERATIONS
Subpart 3598—Inspection and Enforcement
§ 3598.3 Service of notices, instructions and orders.