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.