The department shall keep confidential, upon the request of the person supplying the information, all reports and information required to be filed by regulations adopted under this chapter and all information deducible from filed information. Except by order of a court of competent jurisdiction, the information shall be revealed only to authorized employees and officers of the state and persons authorized in writing by the persons supplying the information. The information may also be made available to the public in the form of statistical reports if the identity of any particular person or mine operator is not revealed by the reports.