Bulletin: September 2004

U.S. DEPARTMENT OF THE INTERIOR                                                                         NO. 4-294-EXP
GEOLOGICAL SURVEY                                                                                        OCT 20, 2004
 
                                      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                                               
 
SEP 2004
03  18 53 48.7  43.828 N  105.253 W   0 G           A 1.0  112   22  WYOMING. ML 3.0 (GS). 55 km (35 miles) SSE of Gillette.
08  20 07 41.1  43.762 N  105.227 W   0 G           A 1.0  115   26  WYOMING. ML 3.2 (GS). 65 km (40 miles) SSE of Gillette.
19  18 06 33.7  43.708 N  105.213 W   0 G           A 1.1  120   17  WYOMING. ML 3.3 (GS). 70 km (45 miles) SSE of Gillette.
19  18 15 33.9  43.727 N  105.240 W   0 G           A 0.8  118   17  WYOMING. ML 3.1 (GS). 65 km (40 miles) SSE of Gillette.
20  18 03 12.0  43.750 N  105.232 W   0 G           A 0.7  115   31  WYOMING. ML 3.4 (GS). 65 km (40 miles) SSE of Gillette.
21  18 07 17.1  43.725 N  105.280 W   0 G           A 0.8  156   10  WYOMING. ML 3.3 (GS). 65 km (40 miles) SSE of Gillette.
23  18 05 44.7  43.776 N  105.323 W   0 G           A 0.8  112   22  WYOMING. ML 3.3 (GS). 60 km (35 miles) SSE of Gillette.
30  18 05 56.6  43.662 N  105.217 W   0 G           A 1.1  120   30  WYOMING. ML 3.3 (GS). 75 km (45 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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