2006-02-20_REVISION - M1983141 - Laserfiche WebLink

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Mr. Thomas A. Schreiner -Page Five January 20, 2006 future access by MRV may or will occur, these shafts will be maintained in their present status. The St. Joe shaft has not been utilized or affected since 1983. As per the Amendment application, it is anticipated that the shaft will be utilized as a future escapeway when workings extend to that area. As such, the shaft will be maintained in its present status. The Donald R. Adit has been utilized subsequent to 1983. The adit portal consists of a corrugated steel pipe extending outward from the crown area. A locked, steel gate (bat accessible) is currently in place, with a secondary concrete and steel gate within the mine also in place. Its closure/maintenance method is consistent with MSHA safety requirements. Further, the adit entrance was inspected by the Division prior to initiation of recent prospecting programs at the site. Inasmuch as future access by MRV may or will occur, the adit will be maintained in its present status. The Belleview Adit is an approximately 1,000-ft. long deadend drift with an open portal. It has not been utilized or affected subsequent to 1983. However, MRV will commit to implementing closure of this feature within 75 days of conditional approval of the Amendment. The anticipated closure method would consist of full cross-section placement of inert waste rock to a distance of approximately 25-ft. inby of the portal. This closure methodology is selected since future access by MRV may occur. The adit feature is not visible or directly accessible from public roadways and is situated on private property that is posted "no trespassing." The Mount Royale No. 1 Adit is the primary operational adit at the site. It is equipped with a locking steel door consistent with MSHA safety requirements. Provision for closure is already incorporated into the Amendment application and associated bond cost estimate. The Mount Royale No. 2 Adit does not yet exist and there is no definitively scheduled date for its construction. At such time MRV elects to construct this adit, closure methodology and associated bond cost estimate with be addressed through a separate Technical Revision. 17. Re: Zero discharge status and UIC permit considerations. As stated previously, MRV will maintain a "zero-discharge" facility by routing (to the extent necessary) minor quantities of underground water to sumps constrained within the underground workings. As such, MRV does not anticipate the applicability of, or the requirement for, a UIC permit to conduct the limited underground water management activities.