US Code - Subchapter II: Coal land entries under nonmineral land laws with reservation of coal to united states

Section 81 Rights of entrymen of lands subsequently classified as coal lands; disposal of coal deposits
Section 82 New or supplemental patents, in case of lands subsequently classified as noncoal
Section 83 Homestead or desert-land and other entries
Section 84 Applications for entry
Section 85 Patents for lands, with reservation of coal; disposal of coal deposits
Section 86 Disposition of lands in Indian reservations with reservation of coal; examination and appraisal of lands
Section 87 Statements in application; patents
Section 88 Disposition of coal by United States
Section 89 Disposition of proceeds
Section 90 Selection of coal lands by States; sale in isolated or disconnected tracts

Coal land entries in general

Lands containing coal, oil, gas, salts, asphaltic materials, sodium, sulphur, and building stone

Petroleum, other mineral oil, or gas land entries under mining laws