U.S. DEPARTMENT OF THE INTERIOR NO. 3-10-EXP GEOLOGICAL SURVEY JUL 21, 2010 ROUTINE MINING SEISMICITY IN THE UNITED STATES MARCH 2010 ORIGIN TIME GEOGRAPHIC DEPTH MAGNITUDE Q SD GAP NO. F-E REGION, CONTRIBUTED MAGNITUDES AND COMMENTS UTC COORDINATES GS STA DAY HR MN SEC LAT LONG mb MS USED 01 19 30 46.6 43.810 N 105.226 W 0 G A 1.0 51 39 WYOMING. ML 3.3 (GS). 60 km (35 miles) SSE of Gillette. 02 20 11 13.5 44.028 N 105.172 W 0 G A 1.6 69 32 WYOMING. ML 3.2 (GS). 40 km (25 miles) SE of Gillette. 03 19 01 28.0 43.805 N 105.194 W 0 G A 0.8 70 30 WYOMING. ML 3.2 (GS). 60 km (35 miles) SSE of Gillette. 06 19 08 10.4 43.784 N 105.244 W 0 G A 1.0 27 57 WYOMING. ML 3.3 (GS). 60 km (35 miles) SSE of Gillette. 08 20 07 30.5 41.762 N 108.624 W 0 G A 1.2 70 30 WYOMING. ML 2.7 (GS). 50 km (30 miles) ENE of Rock Springs. 09 20 05 34.2 43.774 N 105.255 W 0 G A 1.1 58 30 WYOMING. ML 3.3 (GS). 60 km (40 miles) SSE of Gillette. 09 21 56 54.7 38.324 N 81.037 W 0 G A 0.9 69 16 WEST VIRGINIA. mbLg 3.1 (GS). 45 km (30 miles) WNW of Richwood. 12 18 06 03.1 43.561 N 105.208 W 0 G A 1.0 30 46 WYOMING. ML 3.4 (GS). 85 km (55 miles) SSE of Gillette. 13 21 07 56.2 43.759 N 105.269 W 0 G A 0.7 54 25 WYOMING. ML 3.1 (GS). 60 km (40 miles) SSE of Gillette. 13 23 11 36.6 43.355 N 105.123 W 0 G A 1.4 81 26 WYOMING. ML 3.2 (GS). 70 km (45 miles) NNE of Douglas. 15 18 22 12.2* 43.746 N 105.244 W 0 G B 2.3 54 27 WYOMING. ML 3.2 (GS). 65 km (40 miles) SSE of Gillette. 16 19 09 50.9 44.103 N 105.326 W 0 G A 0.8 92 25 WYOMING. ML 3.0 (GS). 25 km (15 miles) SSE of Gillette. 17 18 05 20.2 43.792 N 105.218 W 0 G A 1.1 51 43 WYOMING. ML 3.4 (GS). 60 km (40 miles) SSE of Gillette. 18 18 59 22.6 43.502 N 105.264 W 0 G A 1.4 81 16 WYOMING. ML 3.0 (GS). 85 km (50 miles) E of Midwest. 19 18 06 51.5 43.817 N 105.273 W 0 G A 1.1 31 37 WYOMING. ML 3.3 (GS). 55 km (35 miles) SSE of Gillette. 21 20 00 44.1 43.678 N 105.234 W 0 G A 0.9 53 17 WYOMING. ML 3.0 (GS). 70 km (45 miles) SSE of Gillette. 23 18 06 51.6 43.835 N 105.191 W 0 G A 1.0 55 34 WYOMING. ML 3.3 (GS). 55 km (35 miles) SSE of Gillette. 23 19 24 09.6 43.512 N 105.321 W 0 G A 1.3 51 32 WYOMING. ML 3.3 (GS). 80 km (50 miles) E of Midwest. 27 11 36 55.6* 38.079 N 82.001 W 0 G B 0.7 77 8 WEST VIRGINIA. mbLg 2.8 (GS). 45 km (25 miles) SW of CHARLESTON. 28 14 56 40.5 43.570 N 105.204 W 0 G A 0.8 80 24 WYOMING. ML 3.2 (GS). 80 km (50 miles) SSE of Gillette.