Bulletin: October 2003

U.S. DEPARTMENT OF THE INTERIOR                                                                         NO. 10-03-EXP
GEOLOGICAL SURVEY                                                                                        DEC  4, 2003
 
                                      ROUTINE MINING SEISMICITY IN THE UNITED STATES
 
                                                        OCTOBER 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  21 04 55.6  43.697 N  105.273 W    0 G           0.9  119   14  WYOMING. ML 3.1 (GS). 70 km (45 miles) SSE of Gillette.
03  20 03 56.8  43.775 N  105.288 W    0 G           0.7  132    9  WYOMING. ML 3.1 (GS). 60 km (35 miles) SSE of Gillette.
04  19 25 08.3* 43.604 N  105.146 W    0 G           1.1  166   15  WYOMING. mbLg 2.5 (GS). 80 km (50 miles) WSW of
                                                                     Newcastle.
11  18 22 39.0  43.738 N  105.249 W    0 G           1.5  118   15  WYOMING. 65 km (40 miles) SSE of Gillette.
13  21 00 07.1? 43.20  N  104.55  W    0 G           4.3  179   11  WYOMING. mbLg 3.0 (GS). 80 km (50 miles) SSW of
                                                                     Newcastle.
15  20 07 30.9  43.809 N  105.280 W    0 G           1.0  111   26  WYOMING. ML 3.5 (GS). 60 km (35 miles) SSE of Gillette.
17  21 45 42.2* 44.070 N  105.524 W    0 G           0.5  153    5  WYOMING. ML 3.0 (GS). 25 km (15 miles) S of Gillette.
18  18 04 20.1  43.703 N  105.177 W    0 G           1.4  119   28  WYOMING. 70 km (45 miles) SSE of Gillette.
26  00 52 16.6  40.479 N  106.924 W    1 G           0.8   94   12  COLORADO. ML 3.2 (GS). ML 3.2 (GS). Mining related
                                                                     event near Steamboat Springs.

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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