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. or destroys any property belonging to such employer, after any miner employed by such employer has filed a claim under this subchapter, and with intent to avoid the payment of benefits under this subchapter to such miner or his or her dependents, shall be guilty of a misdemeanor and, upon conviction thereof, shall be punished by a fine of not more than $1,000, or by imprisonment for not more than one year, or both. In any case where such employer is a corporation, the president, secretary, and treasurer thereof also shall be severally liable for such penalty of imprisonment as well as jointly liable with such corporation for such fine.