43 CFR § 3504.55
What types of bonds are acceptable?
June 11, 2020
You may file either a personal bond or a surety bond.
(a) Personal bonds may be in the form of:
(1) Cashier's check;
(2) Certified check; or
(3) Negotiable U.S. Treasury bonds equal in value to your bond amount. If you submit Treasury bonds, you must give the Secretary full authority to sell the securities if you default on your permit or lease obligations.
(b) Surety bonds must be issued by qualified surety companies approved by the Department of the Treasury. You can get a list of qualified sureties at any BLM State Office.