Section 30.201 - Financial assurance for nonmetallic mining(1) If the department requires that financial assurance be provided as a condition for a permit under s. 30.19, 30.195, or 30.20 or for a contract under s. 30.20 for nonmetallic mining and reclamation, the financial assurance may be a bond or alternative financial assurance. An alternative financial assurance may include cash or any of the following:(a) A certificate of deposit.(b) An irrevocable letter of credit.(c) An irrevocable trust.(e) A government security.(f) Any other demonstration of financial responsibility.(2) Any interest earned by the financial assurance shall be paid to the person operating the nonmetallic mining or reclamation project.