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<br />\J <br />SENECA COAL COMPANY <br />Ground Motion Attenuation Study Data Set <br />Yoast Mine, November 29, 2001 <br />Shot <br />Number Depth <br />(feet) Charge Weight <br />(pounds) Instrument <br />Number Distance (ft) Scaled Distance Peak Particle Velocity <br />(inches per second) <br />1 40 1070.0 BC7820 300 9.2 3.800 <br />1 40 1070.0 BC5571 500 15.3 1.940 <br />1 40 1070.0 BC5576 700 21.4 1.640 <br />1 40 1070.0 BC5536 900 27.5 1.050 <br />1 40 1070.0 BE6723 1200 36.7 0.545 <br />1 40 1070.0 BC7818 1500 45.9 0.340 <br />1 40 1070.0 BE6516 2278 69.6 0.165 <br />1 40 1070.0 BC7817 2496 76.3 0.120 <br />1 40 1070.0 BC7092 3146 96.2 0.145 <br />1 40 1070.0 BA5546 4059 124.1 0.045 <br />1 40 1070.0 BA5738 5014 153.3 0.060 <br /> <br />