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www mmylsb=m ( Hda s, IR 1174112-0711 • Billings, W 111-125-0111 • Casper, Nr 1111-225-0515 <br />AasWslEissNrsrAm lit ) 6illft WY Iii-1111-7175 • Rapid City, SO 111.112-1225 • Collies Station, U 1514111-2211 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 10/12/10 <br />Project: Schwanzwalder Mine Work Order: C10090382 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 Batch: R137821A <br />Sample ID: C10090852-002BMS4 2 Sample Matrix Spike Run: ICPMS4-C_100928A 09/29/10 07:57 <br />Antimony 0.0563 mg/L 0.050 113 70 130 <br />Molybdenum 0.0494 mg/L 0.0010 96 70 130 <br />Sample ID: C10090862.002BMSD 2 Sample Matrix Spike Duplicate Run: ICPMS4-C_100928A 09/29/10 08:04 <br />Antimony 0.0588 mg/L 0.050 118 70 130 4.3 20 <br />Molybdenum 0.0533 mg/L 0.0010 104 70 130 7.6 20 <br />Sample ID: LRB 2 Method Blank Run: ICPMS4-C_100928A 09/28/10 14:38 <br />Antimony 0.0010 mg/L 0.0002 <br />Molybdenum 0.0004 mg/L 8E-05 <br />Sample ID: LFB 2 Laboratory Fortified Blank Run: ICPMS4-C_100928A 09/28/10 14:45 <br />Antimony 0.0506 mg/L 0.0010 99 85 115 <br />Molybdenum 0.0507 mg/L 0.0010 101 85 115 <br />Method: E200.8 Batch: R138021 <br />Sample ID: LRB Method Blank Run: ICPMS4-C_101002A 10/02/10 15:44 <br />Silver NO mg/L 8E-05 <br />Sample ID: LFB Laboratory Fortified Blank Run: ICPMS4-C_101002A 10/02/10 15:51 <br />Silver 0.0212 mg/L 0.0010 106 85 115 <br />Sample ID: C10090993.002CMS4 Sample Matrix Spike Run: ICPMS4-C_101002A 10/02/10 17:48 <br />Silver 0.0126 mg/L 0.010 63 70 130 S <br />Sample ID: C10090993-002CMSD Sample Matrix Spike Duplicate Run: ICPMS4-C 101002A 10/02/10 17:55 <br />Silver 0.0128 mg/L 0.010 64 70 130 1.7 20 S <br />Qualifiers: <br />RL - Anayte reporting limit. <br />MDC - Minimum detectable concentration <br />NO - Not detected at the reporting limit. <br />S - Spike recovery outside of advisory limits. <br />Page 21 of 36