43 CFR 3250.13 - What additional BLM orders or instructions govern exploration?
BLM may issue the following types of orders or instructions:
(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.