Code of Federal Regulations Title 43. Public Lands:  Interior § 43.3250.13 What additional BLM orders or instructions govern exploration?

(a) Geothermal resource operational orders that contain detailed requirements of nationwide applicability;

(b) Notices to lessees that contain detailed requirements on a statewide or regional basis;

(c) Other orders and instructions specific to a field or area;

(d) Conditions of approval contained in an approved Notice of Intent;  and

(e) Verbal orders that BLM will confirm in writing.