Bulletin: April 2008
U.S. DEPARTMENT OF THE INTERIOR NO. 8-177-EXP
GEOLOGICAL SURVEY JUN 25, 2008
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
APR 2008
02 20 09 07.7 43.777 N 105.262 W 0 G 4.8 A 1.0 44 38 WYOMING. ML 3.3 (GS). 60 km (35 miles) SSE of Gillette.
02 21 00 12.4 43.796 N 105.329 W 0 G A 1.2 50 31 WYOMING. ML 3.1 (GS). 55 km (35 miles) SSE of Gillette.
04 19 26 55.5* 44.133 N 105.450 W 0 G B 1.6 103 13 WYOMING. ML 2.8 (GS). 20 km (10 miles) SSE of Gillette.
05 21 30 59.9 43.539 N 105.230 W 0 G A 0.7 128 18 WYOMING. ML 2.9 (GS). 85 km (55 miles) SSE of Gillette.
06 19 58 53.8 43.644 N 105.250 W 0 G A 1.0 122 12 WYOMING. ML 2.8 (GS). 75 km (45 miles) SSE of Gillette.
08 20 05 13.6 43.839 N 105.242 W 0 G A 1.0 51 30 WYOMING. ML 3.1 (GS). 55 km (35 miles) SSE of Gillette.
09 13 26 18.1 43.791 N 105.267 W 0 G A 0.6 69 24 WYOMING. ML 3.1 (GS). 60 km (35 miles) SSE of Gillette.
09 22 09 52.5 40.045 N 107.660 W 0 G A 1.3 54 20 COLORADO. ML 2.7 (GS). 25 km (15 miles) E of Meeker.
12 21 00 59.4 43.708 N 105.236 W 0 G A 0.8 51 51 WYOMING. ML 3.3 (GS). 70 km (45 miles) SSE of Gillette.
14 21 07 03.3 43.780 N 105.255 W 0 G A 0.9 51 41 WYOMING. ML 3.2 (GS). 60 km (35 miles) SSE of Gillette.
14 22 23 08.5 44.429 N 105.361 W 0 G A 1.2 59 26 WYOMING. ML 3.0 (EXP). 20 km (10 miles) NE of Gillette.
16 20 02 32.5 43.801 N 105.231 W 0 G A 0.9 51 32 WYOMING. ML 3.2 (GS). 60 km (35 miles) SSE of Gillette.
18 13 49 55.6? 43.80 N 105.47 W 0 G C 1.2 117 5 WYOMING. ML 2.5 (GS). 55 km (35 miles) S of Gillette.
18 20 12 19.5 43.765 N 105.288 W 0 G A 1.1 70 20 WYOMING. ML 2.9 (GS). 60 km (40 miles) SSE of Gillette.
18 23 30 50.0 45.247 N 106.799 W 0 G A 1.2 101 15 EASTERN MONTANA. ML 2.3 (GS). 50 km (30 miles) NNE of
Sheridan.
18 23 32 51.4 43.497 N 105.134 W 0 G A 1.1 113 15 WYOMING. ML 2.6 (GS). 85 km (55 miles) NNE of Douglas.
19 18 01 13.5 43.785 N 105.236 W 0 G A 0.9 51 28 WYOMING. ML 3.1 (GS). 60 km (35 miles) SSE of Gillette.
19 20 06 26.0 43.741 N 105.240 W 0 G A 0.9 51 38 WYOMING. ML 3.2 (GS). 65 km (40 miles) SSE of Gillette.
22 18 01 13.4 43.706 N 105.217 W 0 G A 0.8 74 20 WYOMING. ML 3.1 (GS). 70 km (45 miles) SSE of Gillette.
25 17 45 23.5 43.475 N 105.332 W 0 G A 1.3 50 14 WYOMING. ML 3.1 (GS). 75 km (50 miles) E of Midwest.
25 23 03 37.3* 43.048 N 104.952 W 0 G B 0.8 193 6 WYOMING. ML 2.7 (GS). 50 km (30 miles) NE of Douglas.
26 20 06 35.0 43.758 N 105.268 W 0 G A 1.0 51 35 WYOMING. ML 3.2 (GS). 60 km (40 miles) SSE of Gillette.
27 18 17 30.1 43.677 N 105.193 W 0 G A 1.0 186 21 WYOMING. ML 3.3 (GS). 75 km (45 miles) SSE of Gillette.
27 20 35 57.5* 44.371 N 104.998 W 0 G B 0.9 203 6 WYOMING. ML 2.7 (GS). 40 km (25 miles) ENE of Gillette.
28 20 04 33.0 43.817 N 105.214 W 0 G A 0.8 51 42 WYOMING. ML 3.3 (GS). 55 km (35 miles) SSE of Gillette.
28 22 35 15.8* 43.277 N 105.034 W 0 G B 1.4 191 11 WYOMING. ML 2.6 (GS). 65 km (40 miles) NNE of Douglas.
30 18 07 23.2 43.755 N 105.199 W 0 G A 1.1 51 50 WYOMING. ML 3.3 (GS). 65 km (40 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.
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