II 115th CONGRESS 1st Session S. 1833 IN THE SENATE OF THE UNITED STATES September 19, 2017 Mr. Udall (for himself, Mr. Heinrich , Mr. Bennet , Mr. Wyden , and Mr. Markey ) introduced the following bill; which was read twice and referred to the Committee on Energy and Natural Resources A BILL To modify the requirements applicable to locatable minerals on public domain land, and for other purposes.