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regularly sets off blasts consisting of several tons of explosives with no negative effects <br /> on these adjacent properties or towns. Victor is located approximately one-half mile <br /> away from regular blasts and Cripple Creek is located about a mile distant. As compared <br /> to the large mine, the typical underground mine uses only a few pounds of explosives at a <br /> time, a factor of a thousand less than used in an open pit. <br /> Because this is a low-intensity (limited activity) mine, and with the nearest residence <br /> (constructed building) located approximately 2,500 feet from the site, the effects of <br /> blasting are expected to be insignificant to anyone located that distance away. First, <br /> underground blasting has fewer noise-related impacts than open pit blasting simply <br /> because it occurs underground. Secondly, there is typically no discernible noise present <br /> when blasting underground any distance away from the surface mine opening itself. <br /> With respect to vibrations, blasts of this small magnitude are not capable of generating an <br /> acceleration threshold of even 0.5 inches per second per second at the permit boundary. <br /> This number is a factor of four times below the established safe zone acceleration of 2.0 <br /> inches per second per second, established by the former U.S. Bureau of Mines as the level <br /> of vibration below which damage to a residential structure in a reasonable state of repair <br /> is unlikely to occur. Surface noise levels are suggested to be at 80 decibels or less, and to <br /> meet State and Federal requirements for industrial activities. <br /> (2) As the project is currently in prospecting stage, the details of processing are still in the <br /> future. At this time, it is not anticipated that tailings ponds will be located within the <br /> permit area. However, as prospecting proceeds, and if orebodies are discovered then this <br /> could be an option in the future. <br />