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l <br />Industrial Seismology, Inc. <br />-4 1206 Schifferdecker • P.O. Box 1256 <br />Joplin, MO 64802-1256 <br />417-624-0164 ? 800-641-4538 * Fax: 417-624-9416 <br />www.whiteseis.com <br />CALIBRATION CERTIFICATION <br />I certify that all seismic and acoustic components of this instrument were <br />calibrated on a shake table at the listed input level and frequencies. The <br />results were within the International Society of Explosives Engineers (ISEE) <br />Performance Specifications for Blasting Seismographs. <br />Model: Mini-Seis Serial No.: 932 <br />Transducer No.: 932 Microphone No.: 932 <br /> Seismograph Response <br />Input Level 3 Hertz 10 Hertz 30 Hertz <br />1.00 ips Vertical 0.97 1.01 1.00 <br />1.00 ips Radial 0.98 1.00 1.00 <br />1.00 ips Transverse 0.98 1.00 0.99 <br />1.40 Mb Acoustic 1.20 1.38 1.40 <br />Date: 6/10/2008 Signed: ' Lam/