U.S. DEPARTMENT OF THE INTERIOR NO. 2-13-EXP GEOLOGICAL SURVEY APR 22, 2013 ROUTINE MINING SEISMICITY IN THE UNITED STATES FEBRUARY 2013 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 21 33 52.4 43.538 N 105.248 W 0 G A 1.4 80 11 WYOMING. mbLg 3.0 (GS). 85 km (53 miles) E of Midwest. 02 18 21 36.1 44.186 N 105.328 W 0 G A 1.1 56 15 WYOMING. ML 2.9 (GS). 18 km (11 miles) SE of Gillette. 03 21 18 08.2 43.950 N 105.217 W 0 G A 1.0 111 10 WYOMING. ML 2.7 (GS). 44 km (27 miles) SSE of Gillette. 04 19 36 52.4* 44.075 N 105.398 W 0 G B 2.5 50 33 WYOMING. ML 3.2 (GS). 26 km (16 miles) SSE of Gillette. 06 18 35 34.2 41.795 N 110.784 W 0 G A 1.0 38 62 WYOMING. ML 2.5 (GS). 21 km (13 miles) W of Kemmerer. 09 19 10 15.0 43.774 N 105.345 W 0 G A 0.5 50 47 WYOMING. ML 3.3 (GS). 57 km (36 miles) SSE of Gillette. 10 17 12 32.2* 45.782 N 106.927 W 0 G B 1.1 94 6 EASTERN MONTANA. ML 2.8 (GS). 27 km (17 miles) WSW of Colstrip. 11 22 43 14.8* 40.604 N 112.233 W 0 G B 1.2 103 7 UTAH. ML 2.0 (GS). 10 km (6 miles) NE of Tooele. 12 22 04 10.8 43.811 N 105.224 W 0 G A 1.0 50 22 WYOMING. mbLg 3.1 (GS). 58 km (36 miles) SSE of Gillette. 13 18 49 40.4 45.059 N 106.714 W 0 G A 1.4 64 36 EASTERN MONTANA. ML 3.0 (GS). 35 km (22 miles) NNE of Sheridan. 13 19 13 02.1 41.769 N 108.723 W 0 G A 2.5 48 82 WYOMING. ML 3.4 (GS). 45 km (28 miles) ENE of Rock Springs. 15 21 10 47.4 43.823 N 105.240 W 0 G A 1.3 51 80 WYOMING. ML 3.2 (GS). 56 km (35 miles) SSE of Gillette. 16 20 12 46.9 43.623 N 105.147 W 0 G A 0.8 127 32 WYOMING. ML 3.2 (GS). 79 km (49 miles) SSE of Gillette. 17 18 59 29.3* 43.766 N 105.290 W 0 G B 1.5 129 9 WYOMING. ML 3.1 (GS). 61 km (38 miles) SSE of Gillette. 17 21 05 04.7 43.815 N 105.236 W 0 G A 1.1 43 103 WYOMING. ML 3.5 (GS). 57 km (35 miles) SSE of Gillette. 19 16 08 55.0 43.762 N 105.246 W 0 G A 0.9 50 72 WYOMING. mbLg 2.6 (GS). ML 3.2 (GS). 63 km (39 miles) SSE of Gillette. 23 20 06 13.9 43.569 N 105.142 W 0 G A 2.0 55 34 WYOMING. ML 3.2 (GS). 85 km (53 miles) E of Midwest. 27 19 23 40.9 41.723 N 110.635 W 0 G A 1.4 34 66 WYOMING. ML 2.6 (GS). 11 km (7 miles) SW of Kemmerer. 28 19 10 10.5 43.702 N 105.858 W 0 G A 1.1 138 19 WYOMING. ML 2.9 (GS). 47 km (29 miles) NE of Midwest. 28 21 08 19.4 43.815 N 105.345 W 0 G A 1.1 67 10 WYOMING. ML 3.1 (GS). 54 km (34 miles) SSE of Gillette. 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.