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SITE VISIT <br /> D&A staff visited the site on April 22, 2019 to document conditions and take measurements. <br /> Select photos are found attached. D&A measured water levels in both the Times Mine Well and <br /> the Wynona Shaft using a water level indicator. These levels were then used in the figures and <br /> analysis. Locations were geo-referenced using a Trimble R1 GNSS Receiver coupled to a tablet. <br /> Surface elevations were within a foot of those provided in documents by CMC and their survey <br /> consultant, Mountain Surveying LLC. D&A used the professionally surveyed elevations where <br /> available. <br /> D&A entered the Times Mine to document the adit and bulkhead condition. The first 50 feet of <br /> adit consisted of a relatively new 5-foot diameter corrugated metal culvert pipe. Past the pipe, the <br /> rock of the adit was somewhat blocky with the main joints dipping moderately to steeply west. <br /> Nominal adit dimensions were 6-foot high by 5-foot wide. Ground support consisted of one <br /> timber set and several timber props. After 30 feet,the adit intersected a vein striking west and <br /> dipping steeply to the north. The vein and alteration halo ranged from 1 to 3 feet wide. The <br /> altered rock was soft while the surrounding rock was fractured but generally hard and competent. <br /> No ground support was in place. Conditions were dry. Two new PVC pipes ran the length of the <br /> adit and entered the bulkhead. Both had closed valves. Figure 4 shows a profile of this drift. <br /> The bulkhead was installed in this drift, approximately 20 feet from the adit intersection. Visible <br /> were the wooden concrete forms from the bulkhead placement. The forms were covered in iron <br /> precipitant. The bulkhead concrete was not visible. Seepage was noticeable along the back and <br /> upper edges of the contact between the bulkhead and the rock. The seepage consisted of a wet <br /> sheen with no concentrated flows. No flow was visible on the invert. No concentrated flow was <br /> observed at the pipe penetrations. Seepage and iron precipitant extended two and three feet past <br /> the bulkhead in the back, along the vein. See attached photos and Figure 5 for additional detail. <br /> Using site measurements, public data, and documentation from CMC and Mountain Surveying <br /> LLC, D&A developed a plan and profile of the site to better understand and explain the project. <br /> This is shown in Figure 3. Key elevations are summarized on the table below. Note that the <br /> difference in the water elevations at the Times Well and Wynona Shaft are mostly due to field <br /> measurement limitations. The elevations do appear to reflect the same mine pool. <br /> Feature Elevation ft Notes <br /> Wynona shaft top of Manhole 8450.0 D&A 4/22/19 estimated <br /> Times Well Top of Casing 8449.3 Swift 2/10/2019 <br /> Times Well Ground 8446.8 Swift 2/10/2019 <br /> Collar of Wynona Shaft 8445.0 Swift 2/10/2019 <br /> Top of Wynona Winze in Times Mine 8364.5 Swift 2/10/2019 <br /> Bulkhead Pressure Design Elevation 8360.0 CMC 1/4/2019 <br /> Water Level in Times Well at D&A Site Visit 8357.6 D&A 4/22/19 <br /> Water Level in Wynona Shaft at D&A Site Visit 8356.5 D&A 4/22/19 <br /> Water Level in Times Well noted by others 8354.6 Swift 2/10/2019 <br /> Top of Times Mine Bulkhead 8348.3 D&A 4/22/19 <br /> Floor of Wynona Winze in Times Mine 8347.7 Swift 2/10/2019 <br /> Bottom of Times Mine Bulkhead 8342.4 Interpolated 95 ft at 1.7%grade <br /> Floor of Times Mine Portal 8340.8 Swift 2/10/2019 <br /> - 2 - <br />