43 C.F.R. § 3512.30 What are the responsibilities of a sublessor and a sublessee?
Title 43 - Public Lands: Interior
After BLM's approval of a sublease becomes effective, the sublessor and sublessee are jointly and severably liable for performance of all obligations under the permit or lease.
Title 43: Public Lands: Interior
PART 3500—LEASING OF SOLID MINERALS OTHER THAN COAL AND OIL SHALE
Subpart 3512—Assignments and Subleases
Effect of Assignments on Your Obligations
§ 3512.30 What are the responsibilities of a sublessor and a sublessee?