(1)   

      (a)    Application. An operator at any time may apply for amendment or cancellation of a mining permit or for a change in the mining or reclamation plans for any mining operation which the operator owns or leases. The operator shall submit any application for the amendment, cancellation or change on a form provided by the department and shall identify the tract of land to be added to or removed from the permitted mining site or to be affected by a change in the mining or reclamation plans.

      (b)    Procedure. The department shall process the application for an increase or decrease in the area of a mining site or for a substantial change in the mining or reclamation plans in the same manner as an original application for a mining permit except as provided under par. (d).

      (c)    Substantial changes. The department shall determine if any change in the mining or reclamation plans is substantial and provide notice of its determination in the same manner as specified under s. 293.43 (2m) (b).

      (d)    Notice. The department shall provide notice of any modification which involves an increase or decrease in the area of a mining site or a substantial change in the mining or reclamation plan in the same manner as an original application for a mining permit under s. 293.43 (2m). If 5 or more interested persons do not request a hearing in writing within 30 days of notice, no hearing is required on the modification. The notice shall include a statement to this effect.

      (e)    Hearing. If a hearing is held, testimony and exhibits from the hearing on either the original applications for a mining permit or from previous modification hearings which are relevant to the instant modification may be adopted, subject to cross-examination and rebuttal if not unduly repetitious.

      (f)    Removal. If the application is to cancel any or all of the unmined part of a mining site, the department shall ascertain, by inspection, if mining has occurred on the land. If the department finds that no mining has occurred, the department shall order release of the bond or the security posted on the land being removed from the permitted mining site and cancel or amend the operator’s written authorization to conduct mining on the mining site. No land where mining has occurred may be removed from a permitted mining site or released from bond or security under this subsection, unless reclamation has been completed to the satisfaction of the department.

   (2)   If the department finds that because of changing conditions, including but not limited to changes in reclamation costs, reclamation technology, minimum standards under ss. 293.13 and 293.15 (1) to (12) or governmental land use plans, the reclamation plan for a mining site is no longer sufficient to reasonably provide for reclamation of the project site consistent with this chapter and any rules adopted under this chapter, it shall require the applicant to submit amended mining and reclamation plans which shall be processed in the same manner as an application for an original mining permit. The applicant shall be deemed to hold a temporary mining permit which shall be effective until the amended mining permit is issued or denied. The department shall review the mining and reclamation plans annually after the date of the mining permit issuance or previous review under this section.