U.S. DEPARTMENT OF THE INTERIOR NO. 1-04-EXP GEOLOGICAL SURVEY MAR 1, 2004 ROUTINE MINING SEISMICITY IN THE UNITED STATES JANUARY 2004 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 03 19 05 38.3 43.769 N 105.206 W 0 G A 1.3 117 16 WYOMING. ML 3.2 (GS). 65 km (40 miles) SSE of Gillette. 04 08 56 14.2 40.455 N 106.868 W 1 G A 0.8 94 11 COLORADO. ML 2.5 (GS). NEAR Steamboat Springs. Suspected long-wall mine roof-collapse. 08 19 06 10.2* 43.921 N 105.385 W 0 G B 1.8 109 8 WYOMING. ML 2.9 (GS). 50 km (30 miles) SSE of Gillette. 11 19 01 57.4 43.774 N 105.256 W 0 G A 0.6 113 22 WYOMING. ML 3.2 (GS). 60 km (40 miles) SSE of Gillette. 16 19 37 16.9 44.109 N 105.324 W 0 G A 0.9 147 14 WYOMING. ML 3.1 (GS). 25 km (15 miles) SE of Gillette. 16 21 06 23.7 43.756 N 105.257 W 0 G A 0.9 122 17 WYOMING. ML 3.2 (GS). 60 km (40 miles) SSE of Gillette. 17 21 04 28.2 43.826 N 105.245 W 0 G A 0.7 103 25 WYOMING. ML 3.8 (GS). 55 km (35 miles) SSE of Gillette. 19 19 01 34.2* 43.737 N 105.140 W 0 G B 1.2 172 10 WYOMING. ML 2.7 (GS). 70 km (40 miles) SSE of Gillette. 20 21 08 35.3 44.164 N 105.108 W 0 G 3.8 A 0.8 129 36 WYOMING. ML 4.0 (GS). 35 km (20 miles) ESE of Gillette. 24 19 02 50.0 43.795 N 105.234 W 0 G A 0.9 142 30 WYOMING. ML 3.4 (GS). 60 km (35 miles) SSE of Gillette. 26 19 05 49.6* 43.113 N 104.685 W 0 G B 1.4 155 9 WYOMING. ML 2.9 (GS). 70 km (40 miles) NE of Douglas. 27 19 00 45.6 43.787 N 105.176 W 0 G A 1.3 71 11 WYOMING. ML 3.1 (GS). 60 km (40 miles) SSE of Gillette. 30 17 00 48.2 41.849 N 108.699 W 0 G A 1.2 89 15 WYOMING. ML 2.5 (GS). 50 km (30 miles) NE of Rock Springs. 30 19 03 38.8 43.854 N 105.333 W 0 G A 0.8 108 19 WYOMING. ML 3.2 (GS). 50 km (30 miles) SSE of Gillette. 31 19 03 33.7 43.723 N 105.200 W 0 G A 1.1 73 22 WYOMING. ML 3.0 (GS). 65 km (40 miles) SSE of Gillette.