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April 2018 C-1981-010/Trapper Mine RAR <br /> <br /> <br />Number of Partial Inspection this Fiscal Year: 7 <br />Number of Complete Inspections this Fiscal Year: 3 <br /> <br /> Page 2 of 8 <br /> <br />This was a partial inspection of the Trapper Mine; C1981010, operated by Trapper Mining Inc. <br />The inspection was conducted and the report prepared by me, Robin Reilley of the DRMS. <br />Graham Roberts, Trapper Mine representative was present throughout the inspection. Skies were <br />clear and temperatures ranged from 25-60 degrees Fahrenheit. Water monitoring was conducted <br />at this inspection. Also, 2017 development drilling sites were visited during the inspection. As <br />some roads were saturated and muddy due to a soaking rain and warming temperatures, portions <br />of the site were inaccessible. Up to 1inch of rain had fallen beginning on Friday 6 April and <br />ending on Sunday 8 April. <br /> <br />MAINTENANCE ITEMS: Culverts <br /> <br />Previous inspections identified the following abraded culverts: SA2, SA4A, SA7 and AE11. <br />These four culverts were checked during this inspection. The company agreed to and attempted <br />to mitigate the problem by finding a method of lining the culvert. Two of the four culverts <br />appeared to have had material applied to prevent piping, and two had not been addressed. <br />Observations are noted below. <br /> <br />1. AE11, SA7, repairs were visible but had not lasted and the culvert will pipe during flow. <br />Culverts in this location on the main haul road will be required for some time to come. <br />Culvert AE11 was bent in at the top on the outflow side. <br />2. SA4A and SA2 although repairs had been made they were no longer evident, having <br />been completely obliterated by the discharge regime and abrasive environment. The <br />culverst was abraded over half way along their lengths and pipping will occur during <br />flow. <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> Photo 1: Abraded culvert AE11. <br /> <br /> <br /> Photo 2: Abraded culvert SA7. <br /> <br /> <br />The material meant to <br />seal the abraded portions <br />of culverts didn’t stand <br />the test of time or the <br />discharge regime.