2014-09-15_GENERAL DOCUMENTS - C1981010

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TRAPPER MINING INC. August 29, 2014 Ms. Marcia Talvitie Environmental Protection Specialist Colorado Division of Reclamation, Mining and Safety Durango Field Office 691 CR 233, Suite A -2 Durango, Colorado 81301 Dear Marcia, Given your recent inquiries on Trapper's blasting calculations and operations, we've taken a close look about the best approach to address your questions. We scrutinized the Dec. 7, 2013 shot that was in question and reviewed the information on the blasting sheet to ensure accuracy and safety in our reporting method. Of particular concern to you appeared to be: 1) The Holes /Delay Period, 2) The number of delay periods, 3) Lbs. /Delay Period, and 4) The Direction and Identification of the closest dwelling used to calculate scale distance formula. Issue #1— Holes per delay period A spreadsheet is utilized to analyze the pattern in order to quickly sort the holes that replicate or fall within 8ms to ensure that they aren't exceeding the maximum pounds per 8ms period based on the scaled distance formula to the nearest dwelling not owned by Trapper Mine. I've attached some pieces of the spreadsheet in order to illustrate the method. The first attachment shows the delay timing based on the shot report. The yellow and red cells indicate holes that replicate the most frequently. In this specific shot, you can see in the table that both the 300 and 325 ms delay periods have the most occurrences of holes (6) that fall within the 8ms period the most times . Issue #2 — Number of delay periods Number of delay periods are found by use of a pivot table (also attached) counting common occurrences within the pattern. This portion of the spreadsheet also shows the number of 8 ms delay periods that have explosive going off. In this case there were 29 different 8 ms delay periods where holes were going off. P.O. Box 187 Craig, Colorado 81626 (970) 824 -4401