25 CFR §166.205

1. (a)We may grant a permit on behalf of:
   1. (1)An individual who is adjudicated to be non compos mentis by a court of competent jurisdiction;
   2. (2)An orphaned minor;
   3. (3)An Indian landowner who has granted us written authority to permit his or her land;
   4. (4)The undetermined heirs and devisees of a deceased Indian landowner;
   5. (5)An Indian landowner whose whereabouts are unknown to us after a reasonable attempt is made to locate the Indian landowner;
   6. (6)Indian landowners, where:
      1. (i)We have provided written notice of our intent to grant a permit on their behalf, but the Indian landowners are unable to agree upon a permit during a three-month negotiation period immediately following such notice, or any other notice period established by a tribe under § 166.100(c)(2) of this part; and
      2. (ii)The land is not being used by an individual Indian landowner under § 166.200 of this part.
   7. (7)The individual Indian owners of fractionated Indian land, when necessary to protect the interests of the individual Indian landowners.