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<br />These methods are proposed to seal the mine to supplement filling <br />the drift entries as allowed in 30CFR 75.1711-2. The addition of <br />the proposed seal to the required backfill will provide additional <br />protection to the public safety. Additionally, when the area lras <br />been reclaimed, the entrances will be under ten to twenty feet of <br />backfill over the top of the entrances. This will provide an <br />additional measure of safety to the public. In fact, there will be <br />no way to tell where the portals were located. <br />Since the sealing of the mine must include the main intake and <br />return entries, Salt Creek must build the seals after the main <br />veutilaLion fan kras been removed. Once the fan has been removed, no <br />person shall be allowed beyond the area in the mine where the seals <br />are proposed to be constructed. Salt Creek will install Danger_ <br />signs that indicate ti>.e.ma.ximum distance that travel is allowed into <br />the mine. <br />While workmen are in the mine constructing the seals, the atmosphere <br />of the immediate working area shall be monitored for accumulations <br />of methane and oxygen deficiency by a certified person. The history <br />of Munger Canyon mine indicates that there will be no methane <br />~, encountered. The proximity of the working location to the surface <br />• will ensure that there is no oxygen deficiency in the working <br />environment. <br />If tlter-e are questions or if I can be of further assistance please <br />contact me. <br />Sincerely, ~, <br />'t ~//~ /~ ~1~ <br />~~c~ / /'~~~L ~~~li~ <br />John t•1. Walters <br />Manager of Mine Services <br />• <br />~~ <br />