Bulletin: July 2003

U.S. DEPARTMENT OF THE INTERIOR                                                                         NO.  7-03-EXP
GEOLOGICAL SURVEY                                                                                        AUG 22, 2003
 
                                      ROUTINE MINING SEISMICITY IN THE UNITED STATES
 
                                                         JULY 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  19 49 27.0  44.153 N  105.366 W    0 G           0.9    0   18  WYOMING. ML 3.5 (GS). 20 km (15 miles) southeast of
                                                                     Gillette.
02  20 04 17.5* 43.915 N  105.149 W    0 G           1.1    0   16  WYOMING. ML 3.2 (GS). 50 km (30 miles) SE of Gillette.
02  21 57 20.1  44.236 N  105.176 W    0 G           0.8    0   14  WYOMING. ML 3.6 (GS). 25 km (15 miles) ESE of Gillette.
07  18 08 40.5  43.770 N  105.300 W    0 G           0.9    0   25  WYOMING. ML 3.6 (GS). 60 km (35 miles) SSE of Gillette.
09  18 44 29.0  44.056 N  105.410 W    0 G           1.1    0   13  WYOMING. ML 3.4 (GS). 30 km (20 miles) SSE of Gillette.
10  20 15 23.6  43.753 N  105.258 W    0 G           0.9    0   17  WYOMING. ML 3.2 (GS). 65 km (40 miles) SSE of Gillette.
12  18 03 19.6  43.827 N  105.164 W    0 G           0.8    0   42  WYOMING. ML 3.6 (GS).
13  18 00 03.6* 43.824 N  105.223 W    0 G           1.4    0   15  WYOMING. ML 3.2 (GS).
18  18 05 33.8  43.712 N  105.286 W    0 G           0.7    0   22  WYOMING. ML 3.4 (GS).
24  20 05 14.7  43.730 N  105.316 W    0 G           0.8    0   20  WYOMING. ML 3.3 (GS).
24  23 08 51.0? 44.22  N  105.40  W    0 G           1.0    0   13  WYOMING. ML 3.1 (GS). 10 km (5 miles) SE of Gillette.
31  18 07 09.8  43.844 N  105.287 W    0 G           1.1    0   28  WYOMING. ML 3.4 (GS).

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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