Mo. Rev. Stat. § 173.393
Any money appropriated by the general assembly from the Lewis and Clark discovery fund and used by the recipient in violation of section 173.386 or section 173.392 shall thereby be a liability of the recipient to the credit of the Lewis and Clark discovery fund and the recipient shall remit all such money to the Lewis and Clark discovery fund. In the event the recipient of such appropriated funds is liable to remit the appropriated funds back to the Lewis and Clark discovery fund, pursuant to this section, such recipient shall also be liable to remit interest on the amount due to the fund. Beginning on the date of receipt of such appropriated funds by the recipient, such outstanding funds shall accrue interest at the rate of one percent per month until the principal and all accrued interest is remitted in full to the fund. The recipient shall remit all principal of and interest on such misused funds to the state treasurer for deposit into the Lewis and Clark discovery fund.
§ 173.393, RSMo