43 C.F.R. § 3453.2-5 Effect of partial assignment.
Title 43 - Public Lands: Interior
A transfer of full record-title to only part of the lands, or any bed of the coal deposits therein, shall segregate the transferred and retained portions into separate and distinct leases or licenses, with the retained portion keeping the original serial number. The newly segregated lease or license shall be assigned a new serial number and shall contain the same terms and conditions as the original lease or license. [47 FR 33148, July 30, 1982]
Title 43: Public Lands: Interior
PART 3450—MANAGEMENT OF EXISTING LEASES
Subpart 3453—Transfers by Assignment, Sublease or Otherwise
§ 3453.2-5 Effect of partial assignment.