U.S. DEPARTMENT OF THE INTERIOR NO. 11-97-EXP GEOLOGICAL SURVEY DEC 30, 1997 PROBABLE MINING EXPLOSIONS IN THE UNITED STATES NOVEMBER 1997 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 00 03 47.0 40.188 N 107.804 W 0 G 0.6 14 COLORADO. ML 2.1 (GS). Near Craig. 02 16 30 31.1 40.528 N 112.162 W 0 G 0.4 15 UTAH. ML 2.1 (GS). Near Copperton. 02 16 50 11.4 40.486 N 106.848 W 0 G 0.6 16 COLORADO. ML 2.3 (GS). Near Steamboat Springs. 03 20 10 47.8* 38.056 N 81.156 W 0 G 1.0 5 WEST VIRGINIA. mbLg 3.3 (GS). Near Beckley. 03 22 10 19.0* 38.019 N 81.286 W 0 G 0.6 7 WEST VIRGINIA. mbLg 2.7 (GS). Near Beckley. 03 23 07 20.6 40.288 N 107.770 W 0 G 0.7 13 COLORADO. ML 2.0 (GS). Near Craig. 04 21 24 59.1? 37.73 N 82.00 W 0 G 0.6 7 WEST VIRGINIA. mbLg 2.8 (GS). 15 miles ENE of Williamson. 04 22 00 19.7 40.529 N 112.181 W 0 G 0.6 15 UTAH. ML 2.1 (GS). Near Copperton. 05 20 03 23.0? 37.96 N 81.73 W 0 G 0.4 6 WEST VIRGINIA. mbLg 3.1 (GS). 25 miles SSW of Charleston. 05 20 36 34.0? 31.59 N 108.46 W 0 G 0.5 9 NEW MEXICO-CHIHUAHUA BORDER REG. ML 2.9 (GS). 50 miles WSW of Columbus, New Mexico. 06 20 37 08.8 40.510 N 112.177 W 0 G 0.6 9 UTAH. ML 2.1 (GS). Near Copperton. 06 21 32 14.0* 37.435 N 82.198 W 0 G 0.6 5 WEST VIRGINIA. mbLg 3.0 (GS). 15 miles SSE of Williamson. 06 23 09 11.5 40.302 N 107.755 W 0 G 0.7 17 COLORADO. ML 2.5 (GS). Near Craig. 07 19 00 01.4 40.495 N 107.093 W 0 G 0.9 9 COLORADO. ML 2.2 (GS). Near Steamboat Springs. 07 20 57 31.9* 38.445 N 81.354 W 0 G 0.7 7 WEST VIRGINIA. mbLg 3.1 (GS). 15 miles ENE of Charleston. 07 23 21 29.0 40.302 N 107.801 W 0 G 0.5 13 COLORADO. ML 2.3 (GS). Near Craig. 08 17 22 55.9 37.798 N 81.657 W 0 G 0.6 11 WEST VIRGINIA. mbLg 3.2 (GS). Near Beckley. 08 23 02 35.8 40.274 N 107.783 W 0 G 0.5 11 COLORADO. ML 2.1 (GS). Near Craig. 08 23 05 33.5 40.490 N 106.912 W 0 G 0.5 15 COLORADO. ML 2.4 (GS). Near Steamboat Springs. 09 16 10 45.1 40.523 N 112.171 W 0 G 0.4 16 UTAH. ML 2.1 (GS). Near Copperton. 09 19 18 53.0* 42.634 N 107.059 W 0 G 0.9 7 WYOMING. ML 2.1 (GS). E of Jeffrey City. 09 21 08 25.4 40.519 N 112.173 W 0 G 0.5 17 UTAH. ML 2.2 (GS). Near Copperton. 09 21 21 30.9 41.779 N 108.786 W 0 G 0.6 14 WYOMING. ML 2.4 (GS). Near Rock Springs. 10 18 24 46.3 38.470 N 81.113 W 0 G 0.5 7 WEST VIRGINIA. mbLg 2.8 (GS). 30 miles ENE of Charleston. 10 20 12 09.3 36.590 N 110.391 W 0 G 0.8 10 EASTERN ARIZONA. ML 2.6 (GS). Black Mesa. 10 23 05 57.7 40.309 N 107.824 W 0 G 0.6 12 COLORADO. ML 2.1 (GS). Near Craig. 11 00 06 45.7 41.792 N 108.871 W 0 G 0.7 12 WYOMING. ML 2.2 (GS). Near Rock Springs. 11 17 35 57.8 41.949 N 106.949 W 0 G 0.4 6 WYOMING. ML 2.1 (GS). W of Hanna. 11 18 27 50.4* 41.823 N 108.503 W 0 G 0.7 9 WYOMING. ML 2.1 (GS). Near Rock Springs. 12 15 23 59.7* 37.273 N 81.550 W 0 G 0.6 5 WEST VIRGINIA. mbLg 2.5 (GS). 20 km W of Bluefield. 13 00 00 42.6 41.800 N 108.675 W 0 G 0.6 20 WYOMING. ML 2.4 (GS). Near Rock Springs. 13 17 57 14.5 42.001 N 106.878 W 0 G 0.5 6 WYOMING. ML 2.1 (GS). W of Hanna. 14 19 21 41.4? 46.77 N 122.82 W 0 G 0.1 4 WASHINGTON. Near Centralia. 15 23 15 05.0 41.837 N 108.825 W 0 G 0.4 13 WYOMING. ML 2.2 (GS). Near Rock Springs. 15 23 18 39.8 40.319 N 107.781 W 0 G 0.6 16 COLORADO. ML 2.9 (GS). Near Craig. 15 23 23 14.4 40.366 N 107.836 W 0 G 0.6 11 COLORADO. ML 2.3 (GS). Near Craig. 16 16 29 32.5* 43.522 N 105.064 W 0 G 1.0 7 WYOMING. ML 2.9 (GS). Southern Powder River Basin. 16 21 38 02.2 43.738 N 105.250 W 0 G 0.6 12 WYOMING. ML 2.9 (GS). Southern Powder River Basin. 16 23 06 44.9 40.263 N 107.771 W 0 G 0.7 11 COLORADO. ML 2.1 (GS). Near Craig. 17 17 07 02.4 41.789 N 108.861 W 0 G 0.6 17 WYOMING. ML 2.4 (GS). Near Rock Springs. 17 20 26 54.3? 31.39 N 108.76 W 0 G 0.6 6 NEW MEXICO-CHIHUAHUA BORDER REG. ML 2.3 (GS). 45 miles E of Douglas, Arizona. 17 21 08 45.8 43.685 N 105.260 W 0 G 0.6 21 WYOMING. ML 3.4 (GS). Southern Powder River Basin. 17 22 28 27.3 40.696 N 109.548 W 0 G 0.6 10 UTAH. ML 2.0 (GS). Near Vernal. 18 16 40 36.2 41.811 N 108.753 W 0 G 0.4 10 WYOMING. ML 2.0 (GS). Near Rock Springs. 18 17 53 29.8 42.025 N 106.892 W 0 G 0.6 12 WYOMING. ML 2.6 (GS). W of Hanna. 20 17 45 10.0 40.549 N 112.173 W 0 G 0.6 13 UTAH. ML 2.0 (GS). Near Copperton. 20 18 29 02.1* 38.073 N 81.694 W 0 G 1.1 6 WEST VIRGINIA. mbLg 3.0 (GS). 20 miles S of Charleston. 20 22 52 15.7 40.615 N 109.576 W 0 G 0.8 11 UTAH. ML 2.1 (GS). Near Vernal. 21 16 08 15.7* 43.105 N 105.740 W 0 G 0.6 6 WYOMING. ML 2.4 (GS). NE of Casper. 21 18 37 50.0 40.546 N 112.215 W 0 G 0.7 19 UTAH. ML 2.0 (GS). Near Copperton. 21 20 50 26.8* 41.817 N 108.455 W 0 G 0.9 10 WYOMING. ML 2.0 (GS). Near Rock Springs. 21 21 06 31.1* 32.848 N 109.447 W 0 G 0.5 7 EASTERN ARIZONA. ML 2.1 (GS). 15 miles E of Safford. 23 20 29 22.5* 35.499 N 108.958 W 0 G 1.3 9 NEW MEXICO. ML 2.0 (GS). Near Gallup. 23 22 12 15.4 41.853 N 108.677 W 0 G 0.7 21 WYOMING. ML 3.0 (GS). Near Rock Springs. 25 22 14 16.8 41.769 N 108.814 W 0 G 0.8 17 WYOMING. ML 2.7 (GS). Near Rock Springs. 26 17 09 04.3* 41.721 N 107.551 W 0 G 0.8 5 WYOMING. ML 2.3 (GS). W of Rawlins. 26 22 24 26.5? 37.88 N 81.03 W 0 G 0.8 4 WEST VIRGINIA. mbLg 2.4 (GS). Near Beckley. 26 22 54 28.8* 41.376 N 107.775 W 0 G 1.4 9 WYOMING. ML 2.3 (GS). SW of Rawlins. 27 16 19 24.3? 31.32 N 108.75 W 0 G 0.5 8 NEW MEXICO-CHIHUAHUA BORDER REG. ML 2.6 (GS). 45 miles E of Douglas, Arizona. 28 23 00 01.1 40.310 N 107.702 W 0 G 1.0 17 COLORADO. ML 3.1 (GS). Near Craig. 29 23 05 50.4 40.271 N 107.783 W 0 G 0.8 13 COLORADO. ML 2.3 (GS). Near Craig.