Bulletin: September 1998
U.S. DEPARTMENT OF THE INTERIOR NO. 9-98-EXP
GEOLOGICAL SURVEY JAN 7, 1999
PROBABLE MINING EXPLOSIONS IN THE UNITED STATES
SEPTEMBER 1998
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 19 45 25.3 41.702 N 108.816 W 0 G 1.0 11 WYOMING. ML 2.4 (GS). 20 miles (30 km) ENE of Rock Springs,
Wyoming.
02 18 00 07.3 41.094 N 112.868 W 0 G 0.4 7 UTAH. ML 1.7 (GS). 45 miles (80 km) W of Ogden, Utah.
02 21 24 56.9* 40.367 N 107.182 W 0 G 1.3 7 COLORADO. ML 1.7 (GS). 20 miles (30 km) WSW of Steamboat
Springs, Colorado.
03 22 05 52.8 40.456 N 107.734 W 0 G 1.1 8 COLORADO. ML 2.2 (GS). 10 miles (20 km) WSW of Craig,
Colorado.
04 18 23 55.7 41.749 N 108.787 W 0 G 1.3 19 WYOMING. ML 2.8 (GS). 25 miles (40 km) ENE of Rock Springs,
Wyoming.
07 18 16 47.2 40.499 N 112.204 W 0 G 0.5 19 UTAH. ML 2.6 (GS). NEAR Tooele, Utah.
09 20 41 06.1* 32.640 N 109.318 W 0 G 1.4 5 EASTERN ARIZONA. ML 2.5 (GS). 25 miles (40 km) ESE of
Safford, Arizona.
09 20 47 48.4 40.638 N 109.550 W 0 G 0.4 8 UTAH. ML 2.1 (GS). 15 miles (20 km) N of Vernal, Utah.
09 21 26 54.7 46.743 N 122.751 W 0 G 1.1 6 WASHINGTON. 10 miles (20 km) E of Centralia, Washington.
10 16 07 51.6 40.529 N 112.150 W 0 G 1.1 17 UTAH. ML 2.5 (GS). 5 miles (10 km) E of Tooele, Utah.
10 20 41 07.5 41.669 N 110.524 W 0 G 0.7 14 WYOMING. ML 2.1 (GS). 35 miles (60 km) NE of Evanston,
Wyoming.
10 23 01 57.3 41.761 N 108.915 W 0 G 1.2 11 WYOMING. ML 2.6 (GS). 20 miles (30 km) NE of Rock Springs,
Wyoming.
11 15 53 59.0* 40.305 N 107.492 W 0 G 1.3 6 COLORADO. ML 2.2 (GS). 15 miles (20 km) S of Craig, Colorado.
11 20 16 30.0? 32.55 N 109.46 W 0 G 1.5 6 EASTERN ARIZONA. ML 2.8 (GS). 25 miles (40 km) SE of
Safford, Arizona.
11 21 53 47.0 46.751 N 122.771 W 0 G 0.2 6 WASHINGTON. ML 1.7 (GS). 10 miles (10 km) ENE of Centralia,
Washington.
11 21 53 53.1* 36.931 N 82.536 W 0 G 1.0 6 TENNESSEE. mbLg 2.8 (GS). 10 miles (20 km) ENE of Big Stone
Gap, Virginia.
12 22 43 31.0 40.282 N 107.762 W 0 G 1.0 15 COLORADO. ML 2.6 (GS). 20 miles (30 km) SSW of Craig,
Colorado.
13 18 21 49.1 41.909 N 108.659 W 0 G 1.3 15 WYOMING. ML 2.7 (GS). 35 miles (60 km) NE of Rock Springs,
Wyoming.
14 21 35 23.6 40.567 N 109.733 W 0 G 1.0 15 UTAH. ML 2.4 (GS). 15 miles (20 km) NW of Vernal, Utah.
15 18 59 12.2* 46.717 N 122.741 W 0 G 0.4 5 WASHINGTON. 10 miles (20 km) E of Centralia, Washington.
15 20 33 52.3 37.176 N 82.919 W 0 G 1.1 9 WEST VIRGINIA. mbLg 2.8 (GS). 15 miles (30 km) ESE of
Hazard, Kentucky.
15 22 30 57.9* 40.126 N 107.650 W 0 G 1.3 5 COLORADO. ML 2.3 (GS). 25 miles (40 km) SSW of Craig,
Colorado.
15 22 40 44.6 33.033 N 109.323 W 0 G 0.3 6 EASTERN ARIZONA. ML 2.8 (GS). 25 miles (40 km) ESE of
Safford, Arizona.
16 17 43 28.2 41.729 N 108.907 W 0 G 0.8 19 WYOMING. ML 2.7 (GS). 20 miles (30 km) ENE of Rock Springs,
Wyoming.
16 18 16 28.4 37.960 N 81.416 W 0 G 0.4 6 WEST VIRGINIA. mbLg 3.0 (GS). 20 miles (30 km) NW of
Beckley, West Virginia.
16 19 23 44.1 36.346 N 110.437 W 0 G 0.8 9 EASTERN ARIZONA. ML 2.4 (GS). 30 miles (40 km) SSW of
Kayenta, Arizona.
16 19 41 57.9* 32.271 N 108.798 W 0 G 0.4 6 NEW MEXICO. ML 2.9 (GS). 10 miles (10 km) SW of Lordsburg,
New Mexico.
16 20 35 19.4 36.469 N 110.630 W 0 G 0.9 7 EASTERN ARIZONA. ML 2.4 (GS). 25 miles (40 km) SW of
Kayenta, Arizona.
16 22 05 47.2 40.135 N 107.668 W 0 G 0.7 10 COLORADO. ML 2.4 (GS). 25 miles (40 km) SSW of Craig,
Colorado.
17 21 04 07.6* 32.570 N 109.038 W 0 G 1.2 6 EASTERN ARIZONA. ML 2.7 (GS). 25 miles (30 km) NW of
Lordsburg, New Mexico.
17 21 49 58.6 40.490 N 106.917 W 0 G 1.2 12 COLORADO. ML 2.7 (GS). NEAR Steamboat Springs, Colorado.
19 18 31 25.6 37.988 N 81.451 W 0 G 0.9 6 WEST VIRGINIA. mbLg 2.7 (GS). 20 miles (30 km) NW of
Beckley, West Virginia.
20 15 38 28.9 41.726 N 108.819 W 0 G 1.0 12 WYOMING. ML 2.5 (GS). 20 miles (40 km) ENE of Rock Springs,
Wyoming.
21 20 32 33.9* 37.828 N 81.506 W 0 G 1.1 6 WEST VIRGINIA. mbLg 2.9 (GS). 20 miles (30 km) WNW of
Beckley, West Virginia.
22 22 04 24.4 40.148 N 107.841 W 0 G 1.2 8 COLORADO. ML 2.7 (GS). 30 miles (50 km) SSW of Craig,
Colorado.
22 22 49 50.2* 32.774 N 109.426 W 0 G 0.7 5 EASTERN ARIZONA. ML 2.5 (GS). 15 miles (30 km) ESE of
Safford, Arizona.
23 19 06 26.4? 43.29 N 105.87 W 0 G 0.6 7 WYOMING. ML 3.1 (GS). 20 miles (40 km) ESE of Midwest,
Wyoming.
24 00 26 52.6 40.473 N 106.962 W 0 G 0.6 9 COLORADO. ML 2.8 (GS). 5 miles (10 km) W of Steamboat
Springs, Colorado.
24 17 51 41.8* 41.921 N 108.974 W 0 G 1.1 8 WYOMING. ML 2.5 (GS). 25 miles (40 km) NNE of Rock Springs,
Wyoming.
26 17 02 00.5 39.772 N 110.544 W 0 G 1.4 12 UTAH. ML 2.5 (GS). 20 miles (30 km) NE of Price, Utah.
26 19 00 06.5 43.637 N 105.202 W 0 G 0.8 10 WYOMING. ML 3.3 (GS). 50 miles (80 km) SSE of Gillette,
Wyoming.
28 16 27 23.3 41.820 N 108.719 W 0 G 1.1 15 WYOMING. ML 2.9 (GS). 30 miles (50 km) ENE of Rock Springs,
Wyoming.
28 17 55 41.2 36.556 N 110.457 W 0 G 1.4 9 EASTERN ARIZONA. ML 2.8 (GS). 15 miles (30 km) SW of
Kayenta, Arizona.
28 20 38 16.1 40.547 N 112.119 W 0 G 0.8 15 UTAH. ML 2.7 (GS). 10 miles (20 km) E of Tooele, Utah.
30 21 57 30.2 40.345 N 107.841 W 0 G 1.2 20 COLORADO. ML 3.0 (GS). 20 miles (30 km) SW of Craig,
Colorado.
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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