U.S. DEPARTMENT OF THE INTERIOR NO. 12-03-EXP GEOLOGICAL SURVEY JAN 29, 2004 ROUTINE MINING SEISMICITY IN THE UNITED STATES DECEMBER 2003 ORIGIN TIME GEOGRAPHIC DEPTH MAGNITUDE SD GAP NO. F-E REGION, CONTRIBUTED MAGNITUDES AND COMMENTS UTC COORDINATES GS STA DAY HR MN SEC LAT LONG mb MS USED 01 18 00 45.3 41.833 N 108.500 W 0 G 1.1 93 16 WYOMING. ML 2.6 (GS). 65 km (40 miles) ENE of Rock Springs. 08 19 03 35.6 43.838 N 105.277 W 0 G 1.1 111 19 WYOMING. ML 3.2 (GS). 55 km (35 miles) SSE of Gillette. 11 22 00 28.0* 44.359 N 105.699 W 0 G 1.9 121 8 WYOMING. ML 2.8 (GS). 15 km (10 miles) WNW of Gillette. 13 21 08 49.0 44.141 N 105.357 W 0 G 1.2 90 26 WYOMING. 15 km (10 miles) SE of Gillette. 16 19 05 47.7 43.724 N 105.261 W 0 G 1.0 120 22 WYOMING. ML 3.3 (GS). 65 km (40 miles) SSE of Gillette. 17 21 27 34.6 44.153 N 105.330 W 0 G 1.1 89 20 WYOMING. ML 3.0 (GS). 20 km (10 miles) SE of Gillette. 20 20 30 50.8* 36.555 N 108.473 W 0 G 1.5 113 9 NEW MEXICO. 30 km (20 miles) SW of Farmington. 21 16 01 37.9* 33.559 N 109.451 W 0 G 0.1 99 5 ARIZONA. ML 3.1 (GS). 60 km (35 miles) NNW of Clifton. ML 3.1 (GS). 21 16 08 51.0* 33.347 N 109.463 W 0 G 0.9 171 6 ARIZONA. ML 3.8 (GS). 35 km (25 miles) NNW of Clifton. ML 3.8 (GS). 24 19 13 27.9 43.783 N 105.228 W 0 G 1.2 73 16 WYOMING. ML 3.0 (GS). 60 km (40 miles) SSE of Gillette. 26 19 04 02.1 43.813 N 105.306 W 0 G 1.2 112 11 WYOMING. ML 3.1 (GS). 60 km (35 miles) SSE of Gillette. 28 18 59 41.1 43.743 N 105.257 W 0 G 0.6 115 10 WYOMING. ML 2.8 (GS). ML 2.8 (GS). 65 Kilometers (40 miles ) south-southeast of Gillette, Wyoming. 30 20 36 56.2 44.211 N 105.362 W 0 G 0.9 51 27 WYOMING. ML 3.6 (GS). 15 km (10 miles) ESE of Gillette.