30 U.S. Code § 933 - Duties of operators in States not qualifying under workmen’s compensation laws
During any period in which a State workmen’s compensation law is not included on the list published by the Secretary under section 931(b) of this title each operator of a coal mine in such State shall secure the payment of benefits for which he is liable under section 932 of this title by (1) qualifying as a self-insurer in accordance with regulations prescribed by the Secretary, or (2) insuring and keeping insured the payment of such benefits with any stock company or mutual company or association, or with any other person or fund, including any State fund, while such company, association, person or fund is authorized under the laws of any State to insure workmen’s compensation.
No policy or contract of insurance issued by a carrier to comply with the requirements of clause (2) of subsection (a) of this subsection  shall be canceled prior to the date specified in such policy or contract for its expiration until at least thirty days have elapsed after notice of cancellation has been sent by registered or certified mail to the Secretary and to the operator at his last known place of business.
 So in original. Probably should be “section”.
 So in original. Probably should be “secretes,”.
1978—Subsec. (d). Pub. L. 95–239 added subsec. (d).
1972—Subsec. (a). Pub. L. 92–303 substituted “a coal mine” for “an underground coal mine”.