U.S. DEPARTMENT OF THE INTERIOR NO. 10-98-EXP GEOLOGICAL SURVEY FEB 4, 1999 PROBABLE MINING EXPLOSIONS IN THE UNITED STATES OCTOBER 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 21 57 31.2 40.287 N 107.835 W 0 G 1.2 12 COLORADO. ML 2.8 (GS). 20 miles (30 km) SW of Craig, Colorado. 02 20 42 29.5 40.564 N 109.605 W 0 G 1.1 12 UTAH. ML 2.6 (GS). 10 miles (10 km) NNW of Vernal, Utah. 02 23 18 07.0* 44.195 N 105.269 W 0 G 1.4 10 WYOMING. ML 3.3 (GS). 15 miles (20 km) ESE of Gillette, Wyoming. 03 22 10 36.5 40.247 N 107.819 W 0 G 1.4 13 COLORADO. ML 2.7 (GS). 25 miles (40 km) SW of Craig, Colorado. 04 19 52 16.6 40.544 N 112.194 W 0 G 1.1 19 UTAH. ML 2.5 (GS). 5 miles (10 km) E of Tooele, Utah. 06 21 31 08.7 41.802 N 108.728 W 0 G 1.2 16 WYOMING. ML 2.8 (GS). 30 miles (50 km) ENE of Rock Springs, Wyoming. 07 21 43 52.4 43.203 N 111.526 W 0 G 0.6 8 EASTERN IDAHO. ML 2.6 (GS). 30 miles (50 km) ESE of Idaho Falls, Idaho. 08 16 35 55.2 41.802 N 108.761 W 0 G 1.4 19 WYOMING. ML 2.6 (GS). 25 miles (40 km) ENE of Rock Springs, Wyoming. 08 23 03 06.1 40.308 N 107.804 W 0 G 0.9 11 COLORADO. ML 2.7 (GS). 20 miles (30 km) SW of Craig, Colorado. 11 23 10 41.3 41.743 N 108.694 W 0 G 0.8 17 WYOMING. ML 2.5 (GS). 30 miles (50 km) ENE of Rock Springs, Wyoming. 12 20 15 13.4? 32.73 N 109.10 W 0 G 0.2 4 EASTERN ARIZONA. ML 2.6 (GS). 35 miles (60 km) NW of Lordsburg, New Mexico. 13 23 42 47.4 41.863 N 108.824 W 0 G 0.9 18 WYOMING. ML 2.7 (GS). 25 miles (40 km) NE of Rock Springs, Wyoming. 14 15 25 17.8 41.747 N 108.607 W 0 G 1.2 15 WYOMING. ML 2.9 (GS). 35 miles (50 km) ENE of Rock Springs, Wyoming. 15 21 30 11.7 37.972 N 81.548 W 0 G 0.4 6 WEST VIRGINIA. mbLg 3.1 (GS). 25 miles (40 km) NW of Beckley, West Virginia. 15 21 45 23.3 46.708 N 122.721 W 0 G 1.1 6 WASHINGTON. ML 2.8 (GS). 10 miles (20 km) E of Centralia, Washington. 15 23 45 06.4 41.790 N 108.615 W 0 G 0.9 13 WYOMING. ML 2.8 (GS). 35 miles (50 km) ENE of Rock Springs, Wyoming. 16 21 10 05.9* 44.181 N 105.286 W 0 G 1.1 6 WYOMING. ML 3.2 (GS). 15 miles (20 km) SE of Gillette, Wyoming. 21 21 11 53.4 46.763 N 122.833 W 0 G 1.1 10 WASHINGTON. ML 2.6 (GS). 5 miles (10 km) ENE of Centralia, Washington. 22 21 17 52.4 41.768 N 108.589 W 0 G 0.8 18 WYOMING. ML 3.4 (GS). 35 miles (60 km) ENE of Rock Springs, Wyoming. 22 21 51 14.5 46.720 N 122.853 W 0 G 0.9 6 WASHINGTON. ML 2.9 (GS). NEAR Centralia, Washington. 23 21 13 11.8 41.616 N 108.832 W 0 G 0.4 13 WYOMING. ML 2.5 (GS). 20 miles (30 km) E of Rock Springs, Wyoming. 24 16 29 19.7 41.754 N 108.758 W 0 G 1.3 19 WYOMING. ML 2.9 (GS). 25 miles (40 km) ENE of Rock Springs, Wyoming. 24 17 23 36.8 41.772 N 108.718 W 0 G 1.0 18 WYOMING. ML 2.8 (GS). 30 miles (50 km) ENE of Rock Springs, Wyoming. 24 18 17 26.1 37.691 N 81.606 W 0 G 1.2 11 WEST VIRGINIA. mbLg 2.9 (GS). 25 miles (40 km) WSW of Beckeley, West Virginia. 26 15 06 36.8* 38.035 N 81.739 W 0 G 1.0 7 WEST VIRGINIA. mbLg 2.9 (GS). 20 miles (40 km) SSW of Charleston, West Virginia. 26 22 36 40.1* 41.653 N 108.962 W 0 G 1.5 10 WYOMING. ML 2.8 (GS). 15 miles (20 km) ENE of Rock Springs, Wyoming. 27 20 36 15.4* 37.772 N 81.810 W 0 G 1.4 8 WEST VIRGINIA. mbLg 3.3 (GS). 25 miles (40 km) ENE of Williamson, West Virginia. 28 21 04 27.1* 37.730 N 81.845 W 0 G 1.4 5 WEST VIRGINIA. mbLg 2.8 (GS). 25 miles (40 km) E of Williamson, West Virginia. 30 16 03 32.3 41.834 N 108.978 W 0 G 1.3 13 WYOMING. ML 2.5 (GS). 20 miles (30 km) NE of Rock Springs, Wyoming. 31 16 31 07.2 41.773 N 108.676 W 0 G 1.3 17 WYOMING. ML 2.5 (GS). 30 miles (50 km) ENE of Rock Springs, Wyoming. 31 21 02 20.1* 46.788 N 122.795 W 0 G 0.5 5 WASHINGTON. 10 miles (10 km) ENE of Centalia, Washington. 31 23 46 35.8? 43.42 N 105.38 W 0 G 0.9 6 WYOMING. ML 2.8 (GS). 45 miles (70 km) N of Douglas, Wyoming.