U.S. DEPARTMENT OF THE INTERIOR NO. 8-98-EXP GEOLOGICAL SURVEY OCT 20, 1998 PROBABLE MINING EXPLOSIONS IN THE UNITED STATES AUGUST 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 02 22 30 30.8 40.628 N 112.223 W 0 G 1.1 14 UTAH. ML 2.4 (GS). 10 miles (10 km) NNE of Tooele, Utah. 03 19 15 06.3 41.722 N 110.584 W 0 G 0.9 9 WYOMING. ML 1.9 (GS). 35 miles (60 km) NNE of Evanston, Wyoming. 03 20 14 09.0 40.565 N 112.124 W 0 G 1.3 8 UTAH. ML 1.6 (GS). 10 miles (20 km) ENE of Tooele, Utah. 04 15 15 20.0 40.564 N 112.266 W 0 G 1.3 13 UTAH. ML 2.2 (GS). NEAR Tooele, Utah. 04 16 54 15.0* 40.525 N 112.249 W 0 G 0.8 5 UTAH. NEAR Tooele, Utah. 04 18 12 13.7? 40.28 N 107.26 W 0 G 0.9 7 COLORADO. ML 2.9 (GS). 20 miles (40 km) SE of Craig, Colorado. 05 22 03 45.4 40.303 N 107.726 W 0 G 0.7 14 COLORADO. ML 2.6 (GS). 20 miles (30 km) SSW of Craig, Colorado. 06 16 51 18.1 42.699 N 111.616 W 0 G 0.5 8 EASTERN IDAHO. ML 1.2 (GS). 30 miles (50 km) NNW of Montpelier, Idaho. 06 19 20 29.2 41.723 N 110.641 W 0 G 1.1 14 WYOMING. ML 2.2 (GS). 35 miles (60 km) NNE of Evanston, Wyoming. 06 20 03 00.7 40.533 N 112.176 W 0 G 0.9 11 UTAH. ML 2.0 (GS). 5 miles (10 km) E of Tooele, Utah. 06 21 03 16.8* 46.701 N 122.936 W 0 G 1.5 7 WASHINGTON. ML 2.8 (GS). NEAR Centralia, Washington. 06 21 23 29.1 41.856 N 108.819 W 0 G 1.0 12 WYOMING. ML 2.3 (GS). 25 miles (40 km) NE of Rock Springs, Wyoming. 07 17 31 40.5 40.539 N 112.182 W 0 G 0.5 12 UTAH. ML 2.3 (GS). NEAR Tooele, Utah. 07 20 33 41.3 40.570 N 112.195 W 0 G 0.9 10 UTAH. ML 2.2 (GS). NEAR Tooele, Utah. 07 22 11 52.5 37.880 N 81.545 W 0 G 1.0 6 WEST VIRGINIA. mbLg 2.9 (GS). 20 miles (30 km) WNW of Beckley, West Virginia. 07 23 33 51.7 43.613 N 105.130 W 0 G 1.0 12 WYOMING. ML 3.4 (GS). 50 miles (80 km) SSE of Gillette, Wyoming. 08 15 11 52.6 40.561 N 112.192 W 0 G 1.2 15 UTAH. ML 2.1 (GS). NEAR Tooele, Utah. 08 20 48 03.9 41.694 N 108.651 W 0 G 0.9 18 WYOMING. ML 3.0 (GS). 30 miles (50 km) ENE of Rock Springs, Wyoming. 09 23 42 34.2* 43.977 N 105.321 W 0 G 0.4 5 WYOMING. ML 2.7 (GS). 20 miles (40 km) SSE of Gillette, Wyoming. 12 22 09 56.4 40.251 N 107.847 W 0 G 1.0 11 COLORADO. ML 2.1 (GS). 25 miles (40 km) SW of Craig, Colorado. 13 16 24 26.1* 43.566 N 105.097 W 0 G 1.4 9 WYOMING. ML 3.3 (GS). 50 miles (80 km) WSW of Newcastle, Wyoming. 13 17 02 35.5 41.858 N 109.149 W 0 G 0.9 11 WYOMING. ML 3.0 (GS). 20 miles (30 km) N of Rock Springs, Wyoming. 13 17 52 39.1 41.071 N 112.868 W 0 G 0.8 7 UTAH. ML 2.7 (GS). 50 miles (80 km) NW of Tooele, Utah. Missile. 13 17 54 22.0 40.551 N 112.199 W 0 G 1.1 17 UTAH. ML 2.8 (GS). NEAR Tooele, Utah. 13 19 56 16.4 41.732 N 110.628 W 0 G 0.9 8 WYOMING. ML 1.7 (GS). 35 miles (60 km) NNE of Evanston, Wyoming. 13 20 06 06.5 36.454 N 110.418 W 0 G 1.1 7 EASTERN ARIZONA. ML 2.4 (GS). 20 miles (30 km) SSW of Kayenta, Arizona. 13 22 03 08.9* 40.270 N 107.756 W 0 G 1.2 9 COLORADO. ML 2.8 (GS). 20 miles (30 km) SSW of Craig, Colorado. 13 22 09 16.8* 46.727 N 122.937 W 0 G 1.3 7 WASHINGTON. NEAR Centralia, Washington. 14 18 34 51.9* 43.158 N 105.635 W 0 G 1.2 8 WYOMING. ML 2.7 (GS). 30 miles (50 km) NNW of Douglas, Wyoming. 17 18 55 53.5* 32.932 N 109.476 W 0 G 1.0 6 EASTERN ARIZONA. ML 2.6 (GS). 15 miles (20 km) ENE of Safford, Arizona. 17 21 38 29.7 46.757 N 122.774 W 0 G 0.5 6 WASHINGTON. 10 miles (10 km) ENE of Centralia, Washington. 17 22 04 51.8 40.270 N 107.844 W 0 G 1.4 12 COLORADO. ML 2.5 (GS). 25 miles (40 km) SW of Craig, Colorado. 17 22 18 18.2 46.774 N 122.786 W 0 G 0.9 6 WASHINGTON. 10 miles (10 km) ENE of Centralia, Washington. 18 22 16 30.7 46.781 N 122.787 W 0 G 0.3 6 WASHINGTON. 10 miles (20 km) ENE of Centralia, Washington. 18 23 35 39.2 40.306 N 107.802 W 0 G 0.8 14 COLORADO. ML 3.2 (GS). 20 miles (30 km) SW of Craig, Colorado. 19 14 47 53.1 40.514 N 112.220 W 0 G 0.9 16 UTAH. ML 2.6 (GS). NEAR Tooele, Utah. 20 20 09 03.5 40.586 N 112.317 W 0 G 1.0 9 UTAH. ML 2.3 (GS). NEAR Tooele, Utah. 20 22 03 54.8 40.238 N 107.711 W 0 G 0.7 8 COLORADO. ML 2.4 (GS). 20 miles (30 km) SSW of Craig, Colorado. 21 23 20 51.0 40.248 N 107.788 W 0 G 0.9 10 COLORADO. ML 2.8 (GS). 20 miles (40 km) SW of Craig, Colorado. 23 20 27 25.4 40.495 N 112.156 W 0 G 1.1 9 UTAH. ML 2.2 (GS). 10 miles (10 km) ESE of Tooele, Utah. 24 15 29 47.9 41.867 N 108.792 W 0 G 0.9 19 WYOMING. ML 2.7 (GS). 30 miles (50 km) NE of Rock Springs, Wyoming. 24 19 46 41.0 42.739 N 111.616 W 0 G 1.1 10 EASTERN IDAHO. ML 1.8 (GS). 35 miles (50 km) NNW of Montpelier, Idaho. 24 21 41 53.7 46.775 N 122.786 W 0 G 1.0 7 WASHINGTON. ML 2.4 (GS). 10 miles (10 km) ENE of Centralia, Washington. 24 22 05 33.0 40.353 N 107.748 W 0 G 1.3 14 COLORADO. ML 2.6 (GS). 15 miles (20 km) SW of Craig, Colorado. 25 17 08 24.7 41.668 N 108.694 W 0 G 0.9 7 WYOMING. ML 2.4 (GS). 25 miles (40 km) ENE of Rock Springs, Wyoming. 27 20 46 31.3 40.716 N 109.401 W 0 G 1.3 11 UTAH. ML 2.1 (GS). 20 miles (30 km) NNE of Vernal, Utah. 27 21 29 11.1? 32.19 N 108.69 W 0 G 1.1 6 NEW MEXICO. ML 2.9 (GS). 10 miles (20 km) S of Lordsburg, New Mexico. 27 22 09 47.2* 46.748 N 122.914 W 0 G 0.4 5 WASHINGTON. NEAR Centralia, Washington. 28 20 49 14.9 40.641 N 109.419 W 0 G 1.4 9 UTAH. ML 2.2 (GS). 15 miles (20 km) NNE of Vernal, Utah. 29 00 58 33.4* 44.034 N 105.291 W 0 G 0.9 8 WYOMING. ML 3.0 (GS). 20 miles (30 km) ESE of Gillette, Wyoming. 29 17 05 28.2 41.773 N 108.937 W 0 G 1.1 16 WYOMING. ML 2.7 (GS). 20 miles (30 km) NE of Rock Springs, Wyoming. 29 23 04 14.0* 40.365 N 107.725 W 0 G 0.2 5 COLORADO. ML 2.3 (GS). 15 miles (20 km) SW of Craig, Colorado. 30 16 58 57.9 40.591 N 112.382 W 0 G 1.4 15 UTAH. ML 2.3 (GS). NEAR Tooele, Utah. 30 20 27 26.8 40.581 N 112.296 W 0 G 1.2 18 UTAH. ML 2.7 (GS). NEAR Tooele, Utah. 31 17 04 07.3 40.538 N 112.154 W 0 G 1.0 14 UTAH. ML 2.4 (GS). 10 miles (10 km) E of Tooele, Utah.