U.S. DEPARTMENT OF THE INTERIOR NO. 4-04-EXP GEOLOGICAL SURVEY MAY 28, 2004 ROUTINE MINING SEISMICITY IN THE UNITED STATES APRIL 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 06 18 11 36.8* 43.778 N 105.249 W 0 G B 0.7 179 7 WYOMING. ML 2.8 (GS). 60 km (40 miles) SSE of Gillette. 09 18 57 45.7 43.767 N 105.328 W 0 G A 0.9 123 14 WYOMING. ML 3.1 (GS). 60 km (35 miles) SSE of Gillette. 13 18 03 17.2 43.830 N 105.264 W 0 G A 0.7 94 10 WYOMING. ML 3.5 (GS). 55 km (35 miles) SSE of Gillette. 16 18 07 44.1 43.710 N 105.151 W 0 G A 1.1 122 12 WYOMING. ML 3.2 (GS). 70 km (45 miles) SSE of Gillette. 18 18 04 04.5 43.646 N 105.226 W 0 G A 0.7 123 17 WYOMING. ML 3.1 (GS). 75 km (50 miles) SSE of Gillette. 19 18 02 08.4 43.812 N 105.257 W 0 G A 0.7 113 22 WYOMING. ML 3.2 (GS). 55 km (35 miles) SSE of Gillette. 22 22 20 32.6 41.227 N 117.432 W 0 G A 1.3 85 11 NEVADA. ML 2.4 (GS). ML 2.4 (GS). 40 km (25 miles) NE of Winnemucca. 23 00 40 07.9 43.728 N 105.178 W 0 G A 1.0 120 14 WYOMING. ML 3.0 (GS). 70 km (40 miles) SSE of Gillette. 23 21 11 49.7 43.771 N 105.272 W 0 G A 0.6 123 15 WYOMING. ML 3.5 (GS). 60 km (40 miles) SSE of Gillette. 23 23 07 11.9 43.782 N 105.521 W 0 G A 1.2 107 16 WYOMING. ML 2.9 (GS). 55 km (35 miles) S of Gillette. 24 18 05 58.1 43.810 N 105.241 W 0 G A 0.8 112 34 WYOMING. ML 3.5 (GS). 60 km (35 miles) SSE of Gillette.