U.S. DEPARTMENT OF THE INTERIOR NO. 9-175-EXP GEOLOGICAL SURVEY JUN 24, 2009 ROUTINE MINING SEISMICITY IN THE UNITED STATES 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 MAR 2009 28 21 00 11.1 43.777 N 105.293 W 0 G A 0.8 51 22 WYOMING. ML 3.1 (GS). 60 km (35 miles) SSE of Gillette. APR 2009 01 18 16 18.6 43.796 N 105.149 W 0 G A 2.3 52 39 WYOMING. ML 3.4 (GS). 60 km (40 miles) SSE of Gillette. 04 18 59 46.3 43.792 N 105.193 W 0 G A 0.9 71 47 WYOMING. ML 3.3 (GS). 60 km (40 miles) SSE of Gillette. 05 22 03 42.7 40.129 N 107.694 W 0 G A 1.0 114 19 COLORADO. ML 2.8 (GS). 20 km (10 miles) ENE of Meeker. 06 18 03 37.5 43.801 N 105.246 W 0 G A 0.9 51 47 WYOMING. ML 3.3 (GS). 60 km (35 miles) SSE of Gillette. 06 20 12 39.1 43.693 N 105.256 W 0 G A 0.9 51 42 WYOMING. ML 3.2 (GS). 70 km (45 miles) SSE of Gillette. 08 18 06 56.1 43.810 N 105.257 W 0 G A 1.0 51 40 WYOMING. ML 3.2 (GS). 60 km (35 miles) SSE of Gillette. 11 16 07 47.4* 44.039 N 104.833 W 0 G B 1.7 180 15 WYOMING. ML 2.7 (GS). 55 km (35 miles) WNW of Newcastle. 12 00 03 35.7 43.706 N 105.228 W 0 G A 0.8 97 22 WYOMING. ML 2.8 (GS). 70 km (40 miles) SSE of Gillette. 12 18 01 36.7* 43.646 N 105.324 W 0 G B 1.3 123 12 WYOMING. ML 2.7 (GS). 75 km (45 miles) SSE of Gillette. 12 18 49 22.4 43.720 N 105.367 W 0 G A 0.9 121 12 WYOMING. ML 3.0 (GS). 65 km (40 miles) S of Gillette. 13 17 28 07.4 41.721 N 110.687 W 0 G A 0.9 138 21 WYOMING. ML 2.2 (GS). 55 km (35 miles) NNE of Evanston. 13 19 05 00.7 43.591 N 105.129 W 0 G A 2.0 82 27 WYOMING. ML 3.2 (GS). 80 km (50 miles) WSW of Newcastle. 18 22 26 04.4* 44.467 N 105.421 W 0 G B 1.3 173 12 WYOMING. ML 3.0 (GS). 20 km (15 miles) NNE of Gillette. 20 18 03 02.4 43.760 N 105.189 W 0 G A 0.9 51 46 WYOMING. ML 3.4 (GS). 65 km (40 miles) SSE of Gillette. 21 18 08 09.1 43.744 N 105.245 W 0 G A 1.1 51 41 WYOMING. ML 3.3 (GS). 65 km (40 miles) SSE of Gillette. 22 22 19 44.3 40.106 N 107.922 W 0 G A 0.8 123 18 COLORADO. ML 2.6 (GS). NEAR Meeker. 23 06 23 49.3 40.445 N 106.884 W 1 G A 0.9 71 26 COLORADO. ML 2.9 (GS). NEAR Steamboat Springs. 25 18 23 34.0 43.817 N 105.167 W 0 G A 1.1 52 40 WYOMING. ML 3.4 (GS). 60 km (35 miles) SSE of Gillette. 27 20 04 31.1 43.808 N 105.218 W 0 G A 1.0 51 42 WYOMING. ML 3.2 (GS). 60 km (35 miles) SSE of Gillette. 29 18 19 28.5 44.088 N 105.387 W 0 G A 1.1 95 15 WYOMING. ML 3.0 (GS). 25 km (15 miles) SSE of Gillette. MAY 2009 01 19 33 04.2 36.413 N 110.254 W 0 G A 1.6 69 20 ARIZONA. ML 2.7 (GS). 35 km (20 miles) S of Kayenta. 02 17 04 41.3 43.799 N 105.251 W 0 G A 1.0 51 31 WYOMING. ML 3.0 (GS). 60 km (35 miles) SSE of Gillette. 02 20 00 50.2 43.664 N 105.193 W 0 G A 1.1 77 34 WYOMING. ML 3.1 (GS). 75 km (45 miles) SSE of Gillette. 04 19 06 35.8 43.674 N 105.159 W 0 G A 1.0 77 23 WYOMING. ML 3.1 (GS). 75 km (45 miles) SSE of Gillette. 05 00 58 20.8 32.894 N 109.241 W 0 G A 0.5 186 12 ARIZONA. ML 2.6 (GS). 20 km (10 miles) S of Clifton. 05 21 09 15.9* 43.858 N 105.407 W 0 G B 3.0 106 18 WYOMING. ML 3.2 (GS). 50 km (30 miles) S of Gillette. 12 22 38 01.7* 37.318 N 83.343 W 0 G B 0.6 100 9 EASTERN KENTUCKY. mbLg 2.8 (GS). 15 km (10 miles) WNW of Hazard. 16 20 56 21.3 43.733 N 105.243 W 0 G A 0.8 70 26 WYOMING. ML 2.9 (GS). 65 km (40 miles) SSE of Gillette. 20 22 02 40.6 40.158 N 107.733 W 0 G A 0.7 83 22 COLORADO. ML 2.8 (GS). 20 km (10 miles) NE of Meeker. 23 20 04 08.9 43.818 N 105.155 W 0 G A 1.3 52 44 WYOMING. ML 3.3 (GS). 60 km (35 miles) SSE of Gillette. JUN 2009 08 21 32 11.5 43.725 N 105.313 W 0 G A 1.0 128 11 WYOMING. ML 3.0 (GS). 65 km (40 miles) SSE of Gillette. 09 21 59 56.6 43.715 N 105.132 W 0 G A 0.7 52 37 WYOMING. ML 3.1 (GS). 70 km (45 miles) SSE of Gillette. 11 21 35 04.6 41.010 N 116.515 W 0 G A 0.9 64 17 NEVADA. ML 2.5 (GS). 55 km (35 miles) NE of Battle Mountain. 12 18 02 59.5 43.819 N 105.266 W 0 G A 0.8 51 43 WYOMING. ML 3.3 (GS). 55 km (35 miles) SSE of Gillette. 12 20 18 51.8 45.201 N 106.795 W 0 G A 1.6 86 21 EASTERN MONTANA. ML 2.8 (GS). 45 km (30 miles) NNE of Sheridan. 14 22 00 54.7 39.949 N 107.676 W 0 A A 0.6 106 11 COLORADO. ML 2.7 (GS). 20 km (15 miles) ESE of Meeker. For origin times after September 30, 2002, USGS computations of hypocenters and magnitudes for routine mining events are listed in this publication only for exceptionally large events and for events that are also listed in the Reviewed Event Event Bulletins (REB) of the International Data Center of the United Nations' Comprehensive Nuclear-Test-Ban Treaty Organization.