Excepting and reserving, however, to the United States all the coal and other minerals in the lands so entered and patented, and to it, or persons authorized by it, the right to prospect for, mine, and remove all the coal and other minerals from the same upon compliance with the conditions, and subject to the provisions and limitations, of the Act of December 29, 1916 (39 Stat. 862).
Patents shall contain appropriate notations declaring same subject to the provisions of the Act of December 29, 1916 (39 Stat. 862), with reference to disposition, occupancy, and use of the land as permitted to an entryman under said Act.
43 C.F.R. §3814.2