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,~ <br />C. F. & I. CANON CI'PY QUARRY REPORT <br />caacLUSlav <br />Vibrations at all five locations were detected and recorded. The results <br />are tabulated and included as a separate page in this report. Tne maxirman <br />particle velocity occurred at the Murphy Residence - 0.03 inches/second. <br />Currant, most stringent regulations, specify one inch/second as a limit <br />that could cause structural damage. A limit of two inches/second was <br />common in 1977 and preceding years. <br />PARTICLE VELOCITY CURVES <br />Two curves have been prepared and are included in this report. It is <br />emphasized that the two curves are based on five points only - a very <br />minimal number which provide a trend only. However, the curves will glue <br />a good indication of velocities expected frrom specific blast charges. <br />Additional points may be obtained from monitoring future blasts so as to <br />obtain a more accurate and meaningfLl set of curves. <br />SEISMOGRAPH RECORDINGS <br />Enclosed with the report are copies showing the velocities obtained at each <br />instrument station. Actual velocities obtained are clearly visible. <br />VME - COLORADO <br />