; and (B) by inserting after subsection (k) the following: (l) Ensuring payment of penalties (1) Delinquent payment letter If the operator of a coal or other mine fails to pay any civil penalty assessment that has become a final order of the Commission or a court within 45 days after such assessment became a final order, the Secretary shall send the operator a letter advising the operator of the consequences under this subsection of such failure to pay. The letter shall also advise the operator of the opportunity to enter into or modify a payment plan with the Secretary based upon a demonstrated inability to pay, the procedure for entering into such plan, and the consequences of not entering into or not complying with such plan. (2) Withdrawal orders following failure to pay If an operator that receives a letter under paragraph (1) has not paid the assessment by the date that is 180 days after such assessment became a final order and has not entered into a payment plan with the Secretary, the Secretary shall issue an order requiring such operator to cause all persons, except those referred to in section 104(c), to be withdrawn from, and to be prohibited from entering, the mine that is covered by the final order described in paragraph (1), until the operator pays such assessment in full (including interest and administrative costs) or enters into a payment plan with the Secretary. If such operator enters into a payment plan with the Secretary and at any time fails to comply with the terms specified in such payment plan, the Secretary shall issue an order requiring such operator to cause all persons, except those referred to in section 104(c), to be withdrawn from the mine that is covered by such final order, and to be prohibited from entering such mine, until the operator rectifies the noncompliance with the payment plan in the manner specified in such payment plan. . (2) Applicability and effective date The amendments made by paragraph (1) shall apply to all unpaid civil penalty assessments under the Federal Mine