Bulletin: January 1999
U.S. DEPARTMENT OF THE INTERIOR NO. 1-99-EXP
GEOLOGICAL SURVEY JUL 9, 1999
PROBABLE MINING EXPLOSIONS IN THE UNITED STATES
JANUARY 1999
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
06 18 46 15.1? 32.68 N 109.37 W 0 G 1.4 8 EASTERN ARIZONA. ML 2.7 (GS). 20 miles (40 km) ESE of
Safford, Arizona.
09 16 35 41.1 40.536 N 112.154 W 0 G 0.8 15 UTAH. ML 2.6 (GS). 5 miles (10 km) E of Tooele, Utah.
10 18 49 18.2 41.842 N 108.714 W 0 G 1.1 25 WYOMING. ML 3.3 (GS). 30 miles (50 km) NE of Rock Springs,
Wyoming.
12 23 02 32.4 40.380 N 107.802 W 0 G 1.4 12 COLORADO. ML 2.6 (GS). 15 miles (30 km) SW of Craig,
Colorado.
14 16 39 12.2 41.687 N 108.617 W 0 G 1.2 16 WYOMING. ML 2.4 (GS). 30 miles (50 km) ENE of Rock Springs,
Wyoming.
15 21 33 28.1* 32.715 N 109.319 W 0 G 0.7 7 EASTERN ARIZONA. ML 2.8 (GS). 25 miles (40 km) ESE of
Safford, Arizona.
16 17 00 32.6 41.793 N 108.711 W 0 G 1.1 17 WYOMING. ML 2.9 (GS). 30 miles (50 km) ENE of Rock Springs,
Colorado.
16 21 03 53.8 40.544 N 112.094 W 0 G 1.1 13 UTAH. ML 2.6 (GS). 10 miles (20 km) E of Tooele, Utah.
18 16 52 43.7 40.542 N 112.200 W 0 G 0.6 16 UTAH. ML 2.6 (GS). NEAR Tooele, Utah.
19 23 08 20.4 40.271 N 107.837 W 0 G 1.4 13 COLORADO. ML 2.8 (GS). 25 miles (40 km) SW of Craig,
Colorado.
20 18 50 59.0* 32.592 N 109.381 W 0 G 1.4 10 EASTERN ARIZONA. ML 2.8 (GS). 25 miles (40 km) SE of
Safford, Arizona.
21 23 00 52.4* 40.581 N 107.756 W 0 G 1.2 9 COLORADO. ML 2.7 (GS). 10 miles (20 km) WNW of Craig,
Colorado.
22 18 08 33.2 40.424 N 107.448 W 0 G 1.2 13 COLORADO. ML 2.5 (GS). 10 miles (10 km) SE of Craig,
Colorado.
24 16 49 17.9 40.528 N 112.198 W 0 G 1.2 17 UTAH. ML 2.5 (GS). 5 miles (10 km) E of Tooele, Utah.
25 20 06 31.6* 43.641 N 105.180 W 0 G 1.2 11 WYOMING. ML 3.1 (GS). 50 miles (80 km) SSE of Gillette,
Wyoming.
27 20 06 21.0 43.714 N 105.246 W 0 G 1.2 13 WYOMING. ML 3.3 (GS). 45 miles (70 km) SSE of Gillette,
Wyoming.
27 21 22 09.3 40.531 N 112.172 W 0 G 0.9 16 UTAH. ML 2.5 (GS). 5 miles (10 km) E of Tooele, Utah.
28 22 28 09.1 40.496 N 107.559 W 0 G 1.0 10 COLORADO. ML 2.7 (GS). NEAR Craig, Colorado.
30 21 17 20.4 41.786 N 108.796 W 0 G 0.9 22 WYOMING. ML 2.6 (GS). 25 miles (40 km) ENE of Rock Springs,
Wyoming.
31 18 48 10.9 40.570 N 112.211 W 0 G 0.8 18 UTAH. ML 2.5 (GS). NEAR Tooele, Utah.
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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