Bulletin: December 1997
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.
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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