43 CFR § 3509.50
Under what conditions would BLM reject my application for a fractional interest prospecting permit or lease?
June 11, 2020
BLM will reject your fractional interest application if:
(a) You do not meet the qualifications in §3509.45 of this part;
(b) You would have an interest in the total Federal and non-Federal mineral estate of less than 50% once the fractional interest prospecting permit or lease is issued, unless we determine it would be in the best interests of the government to issue the permit or lease; or
(c) We determine that it is not in the public interest to grant the lease.