Bulletin: June 2003

U.S. DEPARTMENT OF THE INTERIOR                                                                         NO.  6-03-EXP
GEOLOGICAL SURVEY                                                                                        JUL 25, 2003
 
                                      ROUTINE MINING SEISMICITY IN THE UNITED STATES
 
                                                         JUNE 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                                                
 
03  17 03 40.5* 43.902 N  105.366 W    0 G           1.3  174    7  WYOMING. 45 km (30 miles) SSE of Gillette.
04  19 21 54.6  44.065 N  105.383 W    0 G           0.9  146   15  WYOMING. ML 3.5 (GS). 25 km (15 miles) SSE of Gillette.
06  18 03 10.0  43.772 N  105.335 W    0 G           0.7  124   26  WYOMING. ML 3.4 (GS).
10  18 02 02.5  43.962 N  105.404 W    0 G           1.1   93   21  WYOMING. ML 3.2 (GS). 35 km (25 miles) SSE of Gillette.
11  20 27 50.7  44.205 N  105.357 W    0 G           1.0  153   21  WYOMING. ML 3.4 (GS). 15 km (10 miles) SE of Gillette.
14  00 09 59.9* 43.632 N  105.172 W    0 G           1.4  147   13  WYOMING
16  18 59 25.6* 43.893 N  105.296 W    0 G           1.8  144    7  WYOMING. ML 3.2 (GS). 45 km (30 miles) NNE of
                                                                     Torrington, Wyoming.
18  18 02 44.1  43.764 N  105.316 W    0 G  3.5      0.8  133    7  WYOMING. ML 3.6 (GS).
20  18 06 25.2  43.594 N  105.200 W    0 G           1.1  124   21  WYOMING. ML 3.6 (GS).
21  17 10 31.6  44.036 N  105.355 W    0 G           0.9  144   24  WYOMING. ML 3.5 (GS). 30 km (20 miles) SSE of Gillette,
                                                                     Wyoming.
24  20 06 16.3  43.693 N  105.275 W    0 G           1.0  121   16  WYOMING. ML 3.3 (GS). 70 km (40 miles) SSE of Gillette.
25  18 01 53.8  43.685 N  105.242 W    0 G           1.1  119   22  WYOMING. ML 3.1 (GS). 70 km (45 miles) SSE of Gillette.
27  17 59 48.3  43.563 N  105.177 W    0 G           1.2  126   14  WYOMING. ML 3.2 (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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