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EXHIBIT D MINING PLAN <br /> 1. General Mining Plan <br /> The property boundary was surveyed on-site and the permit area was surveyed prior to any site <br /> disturbance. Map C-1 shows the Mining plan. <br /> Mining occurred on 95.8 acres of the Alma Placer site since 1868 in the areas shown as `pre-law <br /> area' on Map C-1. These areas are included within the permit area. Various tunneling, <br /> hydraulicking, sluicing and other methods were employed during historic mining of the Alma <br /> Placer site.No topsoil was salvaged from past operations and no final grading was completed in <br /> the pre-law areas. Future mining will progress to the southeast, in what are referred to as post- <br /> law areas. Map F-1 shows the Reclamation plan. <br /> The current mining plan revised in 2004 via Amendment 4 includes two important benefits: <br /> 1. Many pre-law(1977) gravel piles will be mined and removed from the site. These piles <br /> have steep slopes in many cases and make a relatively unusable landform. Their removal <br /> will make a flatter and more easily reclaimed surface. <br /> 2. Pre-law stock piles were unable to vegetate due to a lack of fines for plants to take root <br /> in. Gravel processing and gold mining will produce fines that will be salvaged and <br /> stockpiled to reclaim old areas after they are mined.New mine areas will salvage all <br /> existing topsoil. <br /> Gravel geology of the Alma Placer is best described as the upper reach of the South Platte River <br /> in Pleistocene glacial moraine gravels mixed with limited Quaternary gravels. Sand beds and <br /> clay beds are interspersed with the alluvium. Depths of this material range from 10' to 60' within <br /> the permit area. These gravels overlay Paleozoic sedimentary rocks and underlying Precambrian <br /> schist and gneiss bedrock with Tertiary-Cretaceous intrusive volcanics that are also present in the <br /> mountains on both sides of the permit area. Minor stratification within gravel horizons is <br /> observed and includes boulders of 10"-15" size thought to be deposited as the product of glacial <br /> melting. <br /> Alma Placer Mine <br /> December 2017 D-1 <br />