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0 Ga:DILD RUSH <br /> AOF E X P E 0,'� IT 10, N' S, <br /> To mediate this, we excavated ten feet on either side of the portal to relieve the pressure on <br /> the upright timbers. Some timbers were broken in multiple spots and they were removed. <br /> We estimate that we have excavated thirty-eight to thirty-nine feet of the collapsed portal with <br /> no evidence of a steel door, nor any hard rock surface. This leads us to believe that the <br /> historical reporting of Homestake's closure of the site is in error. <br /> It is the professional opinion of Gold Rush Expeditions, Inc. and our excavation team, that we <br /> will not encounter the hard rock portal for another 40-50', at the point where the surface <br /> grading is evident. <br /> To safely proceed, it was determined that a larger excavator would be needed to account for <br /> the height of the dirt walls around the portal. <br /> We terminated operations for the winter and opened public access through the property. We <br /> backfilled 15'of material back into the portal to make sure that no one would be injured trying <br /> to get into the portal. We eliminated any open access into the portal We also placed signs <br /> around the site identifying Danger from open mine workings and placed Claim marker signs to <br /> keep other prospectors from digging into the workings. <br /> We estimate to have excavated a volume of 30'wide by 40'deep by 20' high. This is a total of <br /> 24,000 cubic which is estimated to be about 912 tons (assuming 1 cubic foot of dirt is <br /> approximately 76 Ibs.). <br /> 2022 <br /> Our intent is to return in the last week of June 2022. We will plan on working 7 days total. We <br /> will be renting a larger excavator(Cat 336 or similar) and complete the excavation to the portal. <br /> It is estimated that this will require us to dig in another 50' into the previously compacted <br /> material. Total length of the exaction is estimated to be 80-85'. (Please see attached diagrams). <br /> We will also bring a loader and a skid steer to move material from the portal to a staging point <br /> on the north side of the claim. <br /> Once we have breached the portal it will be necessary to let the mine"breathe". This means <br /> letting any bad air or gasses dissipate through natural open-air flow. Usual standard time is 48 <br /> hours for this. <br /> While the mine is airing out, we will place the excavator and or the loader in the portal to block <br /> any public access. We will also mark off the area in orange barrels with"Active Mine Operation" <br /> signs. <br /> Once the mine has had time to air, we will be sending in a Spot (unmanned robot-"dog"by <br /> Boston Dynamics) Unit with a 4-gas monitor and Lidar system to start mapping the mine and <br /> define any areas of concern in the mine. This should take approximately 12 hours to complete, <br /> or 2 workdays. <br /> Gold Rush Expeditions,Inc." <br /> 385-218-21381goldrushDgoldrushexpeditions.com -331 Rio Grande Street,Suite 201,Salt Lake City,Utah 84101 <br />