43 CFR § 3910.23
Requirements for conducting exploration activities
June 11, 2020
Exploration activities on Federal lands require an exploration license or oil shale lease. Activities on a license or lease without an approved plan of operation must be conducted pursuant to an approved exploration plan under §3931.40 of this chapter. The licensee may not remove any oil shale for sale, but may remove a reasonable amount of oil shale for analysis and study.