Twenty years after , all lands subject to the provisions of shall be withdrawn from all forms of entry under this chapter. All claims made pursuant to the provisions of this chapter shall expire at that time, except for (1) claims for which patent has already been issued, and (2) claims on which application for patent has already been made and on which patent is subsequently issued: , That, if the President shall so provide by Executive order, the provisions of this section shall not become effective until thirty years after .
Structure US Code
Title 30— MINERAL LANDS AND MINING
CHAPTER 12A— ENTRY AND LOCATION ON COAL LANDS ON DISCOVERY OF SOURCE MATERIAL
§ 541a. Claims located prior to ; extralateral rights; amended notice of mining location
§ 541b. Mining, removal, and disposal of lignite
§ 541c. Lands where coal deposits have been reserved to the United States
§ 541d. Location of source materials by holders of coal leases
§ 541f. Disbursement of moneys
§ 541i. Withdrawal of lands from entry; expiration of claims