Bulletin: May 2004

U.S. DEPARTMENT OF THE INTERIOR                                                                         NO.  5-04-EXP
GEOLOGICAL SURVEY                                                                                        JUN 24, 2004
 
                                      ROUTINE MINING SEISMICITY IN THE UNITED STATES
 
                                                          MAY 2004
 
 
  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                                               
 
12  21 05 53.2* 44.250 N  105.385 W   0 G           B 1.2  167   11  WYOMING. ML 3.2 (GS). 10 km (5 miles) ESE of Gillette.
12  23 19 21.9  43.697 N  105.254 W   0 G           A 0.7  171   10  WYOMING. ML 3.2 (GS). 70 km (45 miles) SSE of Gillette.
14  18 49 06.8  41.660 N  110.759 W   0 G           A 0.9   70   23  WYOMING. ML 2.3 (GS). 45 km (30 miles) NNE of Evanston.
15  19 26 41.8  44.045 N  105.200 W   0 G  4.4      A 1.0   22   93  WYOMING. ML 4.1 (GS). 35 km (20 miles) SE of Gillette.
16  18 19 05.4* 43.620 N  105.420 W   0 G           B 1.1  185    8  WYOMING. ML 3.2 (GS). 75 km (45 miles) ENE of Midwest.
16  20 08 00.6* 43.781 N  105.245 W   0 G           B 1.0  115    9  WYOMING. ML 2.9 (GS). 60 km (40 miles) SSE of Gillette.
18  18 04 28.9  43.679 N  105.227 W   0 G           A 0.8   95   14  WYOMING. ML 3.3 (GS). 70 km (45 miles) SSE of Gillette.
                                                                      ML 3.3 (GS).
19  20 01 26.7  43.812 N  105.244 W   0 G           A 0.9  113   21  WYOMING. ML 3.5 (GS). 55 km (35 miles) SSE of Gillette.
                                                                      ML 3.5 (GS).
20  18 04 50.6  44.008 N  105.528 W   0 G           A 1.1  142   12  WYOMING. ML 3.3 (GS). 30 km (20 miles) S of Gillette.
                                                                      ML 3.3 (GS).
21  00 02 03.7  43.783 N  105.278 W   0 G           A 0.7  114   15  WYOMING. ML 3.2 (GS). 60 km (40 miles) SSE of Gillette.
21  20 03 25.3  43.579 N  105.192 W   0 G           A 1.2  128   16  WYOMING. ML 3.1 (GS). 85 km (50 miles) SSE of Gillette.
23  18 06 57.1  43.753 N  105.270 W   0 G           A 0.8  116   20  WYOMING. ML 3.2 (GS). 60 km (40 miles) SSE of Gillette.
25  20 37 06.6* 43.374 N  104.976 W   0 G           B 0.9  145    8  WYOMING. ML 3.1 (GS). 75 km (45 miles) NNE of Douglas.
                                                                      ML 3.1 (GS).
27  18 04 34.4  43.816 N  105.276 W   0 G           A 0.8  110   25  WYOMING. ML 3.2 (GS). 55 km (35 miles) SSE of Gillette.
                                                                      55 km (35 miles) SSE of Gillette, Wyoming.
27  19 13 31.4  41.765 N  110.733 W   0 G           A 0.6  152   16  WYOMING. ML 2.3 (GS). 60 km (35 miles) NNE of Evanston.
27  20 42 22.1  44.129 N  105.302 W   0 G  3.7      A 0.9   91   32  WYOMING. ML 3.9 (GS). 25 km (15 miles) SE of Gillette.
                                                                      25 km (15 miles) SE of Gillette, Wyoming.
29  18 00 18.0  43.721 N  105.079 W   5 G           A 1.6  124   12  WYOMING. ML 3.2 (GS). 70 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.

Routine U.S. Mining Seismicity Home Page | Goal and Scope of the Bulletin | Evidence used in Identifying Routine Mining Seismicity | Explanation of Catalog Listings | Mining Seismicity Source Regions