U.S. DEPARTMENT OF THE INTERIOR  
GEOLOGICAL SURVEY                                                                                        JUL 27, 1998
 
                                     PROBABLE MINING EXPLOSIONS IN THE UNITED STATES
 
                                                       DECEMBER 1997
 
 
  ORIGIN TIME       GEOGRAPHIC       DEPTH MAGNITUDE  SD  NO.      REGION,  CONTRIBUTED  MAGNITUDES  AND  COMMENTS
      UTC          COORDINATES                GS          STA
DAY HR MN SEC     LAT       LONG            MB  Msz       USED
 
01  23 09 36.5  40.118 N  107.788 W    0 G           1.1   12  COLORADO. ML 2.6 (GS). 30 miles (50 km) SSW of Craig,
                                                                Colorado.
02  18 42 05.1  40.487 N  112.201 W    0 G           1.0   15  UTAH. ML 2.1 (GS). NEAR Tooele, Utah.
02  19 54 01.6  41.800 N  110.695 W    0 G           1.0   12  WYOMING. ML 1.6 (GS). 40 miles (60 km) NNE of Evanston,
                                                                Wyoming.
03  16 40 16.3* 41.861 N  108.838 W    0 G           1.4   10  WYOMING. ML 1.9 (GS). 25 miles (40 km) NE of Rock Springs,
                                                                Wyoming.
04  23 04 57.1  38.289 N  108.524 W    0 G           0.6    7  COLORADO. ML 2.6 (GS). 35 miles (60 km) WNW of Montrose,
                                                                Colorado.
04  23 07 11.5  40.307 N  107.767 W    0 G           0.8   11  COLORADO. ML 2.3 (GS). 20 miles (30 km) SW of Craig,
                                                                Colorado.
05  17 57 16.0  40.521 N  112.180 W    0 G           1.4    8  UTAH. ML 1.7 (GS). 5 miles (10 km) E of Tooele, Utah.
06  18 49 30.0  43.619 N  105.246 W    0 G           0.9   20  WYOMING. ML 3.3 (GS). 50 miles (80 km) SSE of Gillette,
                                                                Wyoming.
06  23 30 17.5  41.798 N  108.652 W    0 G           1.2   16  WYOMING. ML 2.6 (GS). 30 miles (50 km) ENE of Rock Springs,
                                                                Wyoming.
07  18 28 15.4  40.543 N  112.247 W    0 G           1.5   20  UTAH. ML 2.5 (GS). NEAR Tooele, Utah.
09  18 59 08.7* 36.557 N  110.283 W    0 G           1.2   10  EASTERN ARIZONA. ML 2.7 (GS). 10 miles (20 km) S of Kayenta,
                                                                Arizona.
09  19 22 47.0* 40.586 N  109.918 W    0 G           1.1    6  UTAH. ML 2.1 (GS). 20 miles (40 km) WNW of Vernal, Utah.
09  19 44 55.8* 37.638 N   82.131 W    0 G           0.6    7  WEST VIRGINIA. mbLg 3.0 (GS). 10 miles (10 km) ESE of
                                                                Williamson, West Virginia.
09  21 37 09.4* 36.714 N  108.374 W    0 G           1.4    7  NEW MEXICO. ML 2.5 (GS). 10 miles (10 km) W of Farmington,
                                                                New Mexico.
11  22 06 45.0  41.826 N  108.694 W    0 G           1.3   18  WYOMING. ML 2.7 (GS). 30 miles (50 km) ENE of Rock Springs,
                                                                Wyoming.
12  20 53 33.2  41.708 N  110.602 W    0 G           1.1   15  WYOMING. ML 2.8 (GS). 35 miles (60 km) NNE of Evanston,
                                                                Wyoming.
12  21 00 48.1  38.092 N   81.209 W    0 G           0.8   10  WEST VIRGINIA. mbLg 3.2 (GS). 20 miles (30 km) N of Beckley,
                                                                West Virginia.
23  21 09 31.0* 43.130 N  106.643 W    0 G           0.9   16  WYOMING. ML 2.9 (GS). 25 miles (40 km) NW of Casper, Wyoming.
30  19 18 34.7* 43.964 N  105.196 W    0 G           1.4    7  WYOMING. ML 2.7 (GS). 25 miles (40 km) SE of Gillette,
                                                                Wyoming.
31  17 09 21.5? 47.20  N   92.92  W    0 G           0.9    4  MINNESOTA. mbLg 3.2 (GS). 15 miles (20 km) S of Hibbing,
                                                                Minnesota.