Bulletin: December 2010
U.S. DEPARTMENT OF THE INTERIOR NO. 12-10-EXP
GEOLOGICAL SURVEY FEB 23, 2011
ROUTINE MINING SEISMICITY IN THE UNITED STATES
DECEMBER 2010
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 19 06 45.1* 43.705 N 105.340 W 0 G B 2.4 71 24 WYOMING. ML 3.1 (GS). 65 km (40 miles) S of Gillette.
03 20 03 29.9 43.429 N 105.103 W 0 G A 1.3 52 30 WYOMING. ML 3.3 (GS). 80 km (50 miles) NNE of Douglas.
04 22 19 03.4? 45.32 N 106.25 W 0 G C 1.2 292 14 EASTERN MONTANA. ML 2.4 (GS). ML 2.4 (GS). 65 km (40
miles) W of Broadus.
07 20 12 46.3 43.619 N 105.308 W 0 G A 1.3 72 39 WYOMING. ML 3.2 (GS). 75 km (45 miles) SSE of Gillette.
07 21 07 28.3 44.153 N 105.412 W 0 G A 1.0 103 14 WYOMING. ML 2.7 (GS). 15 km (10 miles) SSE of Gillette.
07 21 29 42.9 45.983 N 106.607 W 0 G A 1.1 102 15 EASTERN MONTANA. ML 2.7 (GS). 10 km (5 miles) N of
Colstrip.
08 22 11 23.4 43.908 N 105.248 W 0 G A 0.8 89 19 WYOMING. ML 3.2 (GS). 50 km (30 miles) SSE of Gillette.
14 19 04 20.0 43.672 N 105.263 W 0 G A 1.1 30 38 WYOMING. ML 3.3 (GS). 70 km (45 miles) SSE of Gillette.
15 21 59 57.4 43.051 N 110.792 W 0 G A 1.0 56 33 WYOMING. ML 2.9 (GS). 40 km (25 miles) NNE of Afton.
16 19 06 13.7* 43.450 N 105.070 W 0 G B 3.3 52 27 WYOMING. ML 3.1 (GS). 80 km (50 miles) NNE of Douglas.
17 19 38 26.0 41.628 N 108.710 W 0 G A 2.0 58 40 WYOMING. ML 3.1 (GS). 40 km (25 miles) E of Rock
Springs.
24 22 00 54.3 43.643 N 105.271 W 0 G A 0.7 53 31 WYOMING. ML 2.9 (GS). 75 km (45 miles) SSE of Gillette.
26 20 10 15.8 43.538 N 104.925 W 0 G A 1.3 52 45 WYOMING. ML 3.4 (GS). 70 km (40 miles) WSW of Newcastle.
27 18 19 35.1 43.979 N 105.359 W 0 G A 1.1 100 10 WYOMING. ML 2.9 (GS). 35 km (25 miles) SSE of Gillette.
27 19 15 31.9 44.141 N 105.119 W 0 G A 1.1 56 18 WYOMING. ML 3.2 (GS). 35 km (20 miles) ESE of Gillette.
27 19 32 35.7 43.928 N 105.285 W 0 G A 1.3 105 20 WYOMING. ML 3.0 (GS). 45 km (25 miles) SSE of Gillette.
27 20 10 47.3 43.138 N 105.098 W 0 G A 1.3 94 16 WYOMING. ML 3.1 (GS). 50 km (30 miles) NNE of Douglas.
30 21 07 59.2* 43.209 N 104.900 W 0 G B 1.3 201 8 WYOMING. ML 2.8 (GS). 60 km (35 miles) NE of Douglas.
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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