U.S. DEPARTMENT OF THE INTERIOR NO. 8-02-EXP GEOLOGICAL SURVEY OCT 3, 2002 ROUTINE MINING SEISMICITY IN THE UNITED STATES AUGUST 2002 ORIGIN TIME GEOGRAPHIC DEPTH MAGNITUDE SD GAP NO. F-E REGION, CONTRIBUTED MAGNITUDES AND COMMENTS UTC COORDINATES GS STA DAY HR MN SEC LAT LONG mb MS USED 01 19 05 02.7 41.775 N 110.694 W 0 G 0.7 107 13 WYOMING. ML 1.6 (GS). 40 miles (60 km) NNE of Evanston. 01 19 58 15.0* 33.043 N 109.351 W 0 G 0.4 188 6 ARIZONA. ML 3.1 (GS). Near Clifton. 01 20 01 41.8 43.742 N 105.313 W 0 G 0.8 122 24 WYOMING. ML 3.3 (GS). 40 miles (65 km) SSE of Gillette. 02 17 12 14.0 40.539 N 112.195 W 0 G 0.5 71 13 UTAH. ML 1.3 (GS). 5 miles (10 km) E of Tooele. 02 19 14 35.4 40.556 N 112.178 W 0 G 1.0 71 14 UTAH. ML 1.8 (GS). 5 miles (10 km) ENE of Tooele. 02 20 20 23.3 44.103 N 105.356 W 0 G 0.8 146 23 WYOMING. ML 3.1 (GS). 15 miles (25 km) SSE of Gillette. 03 18 02 03.7 43.627 N 105.252 W 0 G 0.7 147 17 WYOMING. ML 3.3 (GS). 50 miles (75 km) SSE of Gillette. 03 18 56 24.9 40.566 N 112.183 W 0 G 0.9 52 18 UTAH. ML 1.8 (GS). 5 miles (10 km) ENE of Tooele. 03 21 22 28.7 46.772 N 122.784 W 0 G 0.8 64 13 WASHINGTON. ML 2.1 (GS). 10 miles (15 km) ENE of Centralia. 03 23 33 21.5* 45.264 N 106.834 W 0 G 0.6 197 6 EASTERN MONTANA. ML 2.6 (GS). 35 miles (50 km) N of Sheridan, WY. 04 19 31 13.3 40.548 N 112.178 W 0 G 0.6 64 14 UTAH. ML 1.6 (GS). 5 miles (10 km) E of Tooele. 04 21 32 40.4 42.901 N 111.444 W 0 G 0.4 103 10 SOUTHERN IDAHO. ML 1.4 (GS). 30 miles (45 km) WNW of Afton, WY. 04 22 06 20.8 40.279 N 107.784 W 0 G 0.9 109 18 COLORADO. ML 2.5 (GS). 20 miles (30 km) NNE of Meeker. 05 15 21 53.0 41.784 N 110.727 W 0 G 0.4 136 14 WYOMING. ML 1.6 (GS). 40 miles (60 km) NNE of Evanston. 05 18 48 27.6 36.291 N 110.123 W 0 G 0.6 120 11 ARIZONA. ML 2.6 (GS). 30 miles (50 km) SSE of Kayenta. 05 19 29 03.5 41.156 N 112.883 W 0 G 0.7 102 12 UTAH. ML 1.8 (GS). 50 miles (75 km) W of Ogden. 05 21 13 35.9 41.126 N 112.865 W 0 G 0.6 76 16 UTAH. ML 1.8 (GS). 45 miles (75 km) W of Ogden. 05 22 04 53.5 46.701 N 122.712 W 0 G 0.9 146 13 WASHINGTON. ML 2.2 (GS). 10 miles (20 km) E of Centralia. 05 22 27 33.4 40.921 N 116.345 W 0 G 0.7 55 24 NEVADA. ML 2.7 (GS). 30 miles (50 km) WNW of Elko. 06 15 38 58.2 40.518 N 112.148 W 0 G 0.3 77 11 UTAH. ML 1.5 (GS). 10 miles (15 km) E of Tooele. 06 18 16 14.4 41.133 N 112.894 W 0 G 0.5 129 13 UTAH. ML 1.9 (GS). 50 miles (75 km) W of Ogden. 06 21 59 21.5 46.733 N 122.773 W 0 G 0.7 63 11 WASHINGTON. ML 2.0 (GS). 10 miles (15 km) E of Centralia. 06 22 04 23.4 40.384 N 107.697 W 0 1.0 176 14 COLORADO. ML 2.6 (GS). 10 miles (20 km) SW of Craig. 07 16 11 23.1 41.729 N 110.735 W 0 G 0.5 136 13 WYOMING. ML 1.6 (GS). 35 miles (55 km) NNE of Evanston. 07 18 02 34.1 44.126 N 105.404 W 0 G 0.7 147 35 WYOMING. ML 3.6 (GS). 15 miles (20 km) SSE of Gillette. 07 19 16 56.8 40.535 N 112.169 W 0 G 1.0 73 14 UTAH. ML 1.5 (GS). 5 miles (10 km) E of Tooele. 07 20 13 31.7* 43.385 N 105.257 W 0 G 0.8 201 8 WYOMING. ML 2.7 (GS). 45 miles (70 km) N of Douglas. 07 21 46 08.3 46.765 N 122.777 W 0 G 0.8 63 13 WASHINGTON. ML 2.2 (GS). 10 miles (15 km) ENE of Centralia. 07 22 08 42.9 40.274 N 107.677 W 0 G 0.9 175 12 COLORADO. ML 2.3 (GS). 20 miles (30 km) SSW of Craig. 08 18 28 35.7 40.519 N 112.166 W 0 G 0.5 65 12 UTAH. ML 1.5 (GS). 5 miles (10 km) E of Tooele. 08 19 08 22.0 36.426 N 110.207 W 0 G 0.6 124 8 ARIZONA. ML 2.1 (GS). 20 miles (35 km) S of Kayenta. 08 20 13 32.0 42.753 N 111.701 W 0 G 0.8 84 11 SOUTHERN IDAHO. ML 1.8 (GS). 35 miles (55 km) NW of Montpelier. 08 21 10 25.0* 33.031 N 109.346 W 0 G 0.9 176 5 ARIZONA. ML 1.9 (GS). Near Clifton. 08 21 57 31.6 46.760 N 122.756 W 0 G 0.6 117 14 WASHINGTON. ML 2.5 (GS). 10 miles (15 km) ENE of Centralia. 09 15 51 21.3 41.836 N 110.723 W 0 G 0.7 103 16 WYOMING. ML 1.7 (GS). 40 miles (65 km) NNE of Evanston. 09 17 29 16.3 40.546 N 112.190 W 0 G 0.5 62 17 UTAH. ML 1.8 (GS). 5 miles (10 km) E of Tooele. 09 19 03 46.6 43.530 N 105.256 W 0 G 1.0 172 17 WYOMING. ML 3.3 (GS). 50 miles (85 km) E of Midwest. 09 20 26 54.7 40.561 N 112.187 W 0 G 0.8 53 14 UTAH. ML 1.5 (GS). 5 miles (10 km) ENE of Tooele. 09 20 55 17.7 41.701 N 108.650 W 0 G 0.7 94 19 WYOMING. ML 2.8 (GS). 30 miles (45 km) ENE of Rock Springs. 09 21 40 47.3 46.767 N 122.801 W 0 G 1.0 133 7 WASHINGTON. ML 1.9 (GS). 10 miles (15 km) ENE of Centralia. 10 17 38 43.8 40.537 N 112.184 W 0 G 0.6 66 14 UTAH. ML 1.7 (GS). 5 miles (10 km) E of Tooele. 10 17 54 57.3 40.524 N 112.164 W 0 G 1.0 74 10 UTAH. ML 1.3 (GS). 5 miles (10 km) E of Tooele. 10 21 13 01.0 41.715 N 108.872 W 0 G 1.3 155 14 WYOMING. ML 1.8 (GS). 20 miles (30 km) ENE of Rock Springs. 11 14 55 49.6 42.871 N 111.188 W 0 G 0.5 110 15 SOUTHERN IDAHO. ML 1.5 (GS). 15 miles (25 km) NW of Afton, WY. 11 15 32 28.8 40.565 N 112.206 W 0 G 0.5 109 8 UTAH. ML 1.6 (GS). 5 miles (10 km) ENE of Tooele. 11 16 36 12.9 44.056 N 105.335 W 0 G 0.8 132 26 WYOMING. ML 3.4 (GS). 20 miles (30 km) SSE of Gillette. 11 18 42 31.0 40.555 N 112.176 W 0 G 0.4 66 13 UTAH. ML 2.0 (GS). 5 miles (10 km) ENE of Tooele. 11 22 45 52.7 44.249 N 105.408 W 0 G 0.5 156 12 WYOMING. ML 2.6 (GS). 5 miles (10 km) SE of Gillette. 12 18 51 28.0 41.727 N 110.761 W 0 G 0.6 105 21 WYOMING. ML 2.1 (GS). 35 miles (55 km) NNE of Evanston. 12 20 44 26.7 41.141 N 112.902 W 0 G 0.4 131 11 UTAH. ML 1.8 (GS). 50 miles (80 km) W of Ogden. 12 20 55 35.2 40.965 N 116.371 W 0 G 0.6 157 6 NEVADA. ML 2.0 (GS). 30 miles (50 km) WNW of Elko. 13 15 49 08.8 40.558 N 112.186 W 0 G 0.7 107 11 UTAH. ML 1.6 (GS). 5 miles (10 km) ENE of Tooele. 13 17 01 54.3 41.735 N 110.644 W 0 G 0.3 139 21 WYOMING. ML 2.1 (GS). 35 miles (60 km) NNE of Evanston. 13 18 35 12.2 40.550 N 112.178 W 0 G 0.9 71 13 UTAH. ML 1.5 (GS). 5 miles (10 km) ENE of Tooele. 13 19 44 36.0 41.779 N 110.721 W 0 G 0.7 136 11 WYOMING. ML 1.5 (GS). 35 miles (60 km) NNE of Evanston. 13 21 05 13.8 41.102 N 112.861 W 0 G 0.5 75 15 UTAH. ML 1.8 (GS). 50 miles (75 km) W of Ogden. 13 23 23 10.7 32.855 N 109.318 W 0 G 0.6 187 8 ARIZONA. ML 2.0 (GS). 15 miles (20 km) S of Clifton. 14 16 32 43.3 40.566 N 112.190 W 0 G 0.9 80 12 UTAH. ML 1.6 (GS). 5 miles (10 km) ENE of Tooele. 14 17 41 16.2 46.749 N 122.787 W 0 G 0.7 130 6 WASHINGTON. 10 miles (15 km) ENE of Centralia. 14 19 04 33.5 43.729 N 105.265 W 0 G 0.9 130 16 WYOMING. ML 3.2 (GS). 40 miles (65 km) SSE of Gillette. 14 20 57 36.1 41.026 N 116.371 W 0 G 0.6 119 5 NEVADA. ML 1.8 (GS). 35 miles (55 km) WNW of Elko. 14 22 10 58.8 46.761 N 122.797 W 0 G 0.6 132 6 WASHINGTON. 10 miles (15 km) ENE of Centralia. 15 16 04 10.6 41.760 N 110.638 W 0 G 0.4 139 11 WYOMING. ML 1.6 (GS). 40 miles (60 km) NNE of Evanston. 15 16 06 10.9 40.524 N 112.184 W 0 G 0.5 56 15 UTAH. ML 1.6 (GS). 5 miles (10 km) E of Tooele. 15 22 19 01.5 46.766 N 122.779 W 0 G 0.7 131 10 WASHINGTON. ML 2.3 (GS). 10 miles (15 km) ENE of Centralia. 16 19 22 41.8 40.557 N 112.177 W 0 G 0.5 87 8 UTAH. ML 1.3 (GS). 5 miles (10 km) E of Tooele. 17 18 04 23.3 43.757 N 105.296 W 0 G 0.6 159 9 WYOMING. ML 3.0 (GS). 40 miles (60 km) SSE of Gillette. AUG 2002 (EXP) PAGE 2 17 20 41 20.4 40.532 N 112.162 W 0 G 0.4 55 13 UTAH. ML 1.5 (GS). 5 miles (10 km) E of Tooele. 17 23 58 07.6* 44.066 N 105.349 W 0 G 0.4 154 5 WYOMING. ML 2.8 (GS). 15 miles (30 km) SSE of Gillette. 18 18 13 18.0 46.771 N 122.779 W 0 G 0.5 134 4 WASHINGTON. 10 miles (15 km) ENE of Centralia. 18 22 05 54.8 41.796 N 108.906 W 0 G 0.4 97 6 WYOMING. ML 2.1 (GS). 20 miles (35 km) NE of Rock Springs. 19 20 23 36.7* 43.293 N 105.178 W 0 G 1.2 140 6 WYOMING. ML 2.5 (GS). 40 miles (60 km) NNE of Douglas. 19 21 10 21.4 40.924 N 116.349 W 0 G 0.7 98 15 NEVADA. ML 2.5 (GS). 30 miles (50 km) WNW of Elko. 19 22 00 35.0 40.559 N 107.483 W 0 G 0.5 184 10 COLORADO. ML 2.5 (GS). 5 miles (10 km) NE of Craig. 20 14 10 46.1 35.493 N 107.639 W 0 G 0.6 90 12 NEW MEXICO. ML 2.5 (GS). 25 miles (40 km) NNE of Grants. 20 16 36 49.3 40.563 N 112.180 W 0 G 0.9 53 12 UTAH. ML 1.1 (GS). 5 miles (10 km) ENE of Tooele. 20 18 06 29.8 41.120 N 112.869 W 0 G 0.4 107 8 UTAH. ML 1.1 (GS). 50 miles (75 km) W of Ogden. 20 19 32 25.7 41.144 N 112.879 W 0 G 0.5 77 13 UTAH. ML 1.7 (GS). 40 miles (75 km) W of Ogden. 20 20 19 40.6 40.539 N 112.169 W 0 G 0.8 60 13 UTAH. ML 1.7 (GS). 5 miles (10 km) E of Tooele. 21 16 16 00.5 40.525 N 112.157 W 0 G 0.5 74 9 UTAH. ML 1.1 (GS). 5 miles (10 km) E of Tooele. 21 16 47 59.7 41.809 N 108.785 W 0 G 0.6 85 13 WYOMING. ML 2.0 (GS). 25 miles (40 km) NE of Rock Springs. 21 22 04 50.7 46.756 N 122.778 W 0 G 0.7 129 11 WASHINGTON. ML 2.3 (GS). 10 miles (15 km) ENE of Centralia. 22 15 42 19.5 40.510 N 112.177 W 0 G 0.5 74 12 UTAH. ML 1.4 (GS). 5 miles (10 km) E of Tooele. 22 19 06 09.0 43.637 N 105.258 W 0 G 0.8 123 11 WYOMING. ML 2.7 (GS). 45 miles (75 km) SSE of Gillette. 22 20 48 56.9 40.931 N 116.354 W 0 G 0.9 154 10 NEVADA. ML 2.1 (GS). 30 miles (50 km) WNW of Elko. 22 21 26 41.6 41.842 N 108.770 W 0 G 1.3 92 21 WYOMING. ML 2.5 (GS). 30 miles (45 km) NE of Rock Springs. 22 22 07 06.6 46.761 N 122.768 W 0 G 0.7 81 9 WASHINGTON. 10 miles (15 km) ENE of Centralia. 23 15 27 02.4 40.523 N 112.154 W 0 G 0.4 56 13 UTAH. ML 1.5 (GS). 5 miles (10 km) E of Tooele. 23 16 02 45.8 41.810 N 110.708 W 0 G 0.7 107 18 WYOMING. ML 1.7 (GS). 40 miles (65 km) NNE of Evansville. 23 20 00 29.0 43.679 N 105.270 W 0 G 1.1 120 18 WYOMING. ML 2.9 (GS). 45 miles (70 km) SSE of Gillette. 23 22 05 38.9 40.307 N 107.832 W 0 G 1.1 134 20 COLORADO. ML 2.4 (GS). 20 miles (30 km) SW of Craig. 24 20 51 31.4 40.987 N 116.361 W 0 G 0.7 100 9 NEVADA. ML 2.4 (GS). 35 miles (55 km) WNW of Elko. 25 19 23 11.3 43.748 N 105.243 W 0 G 0.4 192 6 WYOMING. ML 2.5 (GS). 40 miles (65 km) SSE of Gillette. 25 20 16 27.6 35.492 N 107.555 W 0 G 0.6 116 10 NEW MEXICO. ML 2.0 (GS). 30 miles (45 km) NE of Grants. 25 20 49 54.3 43.403 N 105.104 W 0 G 0.1 139 5 WYOMING. ML 2.6 (GS). 45 miles (75 km) NNE of Douglas. 25 22 22 43.2 40.324 N 107.766 W 0 G 0.7 72 16 COLORADO. ML 3.1 (GS). 20 miles (30 km) SW of Craig. 26 17 05 31.6 45.248 N 106.880 W 0 G 0.8 187 15 EASTERN MONTANA. ML 3.1 (GS). 30 miles (50 km) N of Sheridan, WY. 26 18 46 55.5 41.788 N 110.682 W 0 G 0.5 120 12 WYOMING. ML 2.2 (GS). 40 miles (60 km) NNE of Evanston. 26 20 23 40.9 44.145 N 105.385 W 0 G 0.8 138 19 WYOMING. ML 3.5 (GS). 10 miles (20 km) SSE of Gillette. 26 22 34 49.1 46.764 N 122.775 W 0 G 0.8 130 13 WASHINGTON. ML 2.6 (GS). 10 miles (15 km) ENE of Centralia. 27 15 55 26.6 41.810 N 110.674 W 0 G 0.5 138 13 WYOMING. ML 1.6 (GS). 40 miles (65 km) NNE of Evanston. 27 18 19 29.7 41.139 N 112.888 W 0 G 0.6 77 13 UTAH. ML 1.8 (GS). 50 miles (75 km) W of Ogden. 27 19 04 19.8 42.708 N 111.668 W 0 G 0.4 78 14 SOUTHERN IDAHO. ML 1.9 (GS). 30 miles (50 km) NW of Montpelier. 27 20 06 54.3 43.724 N 105.272 W 0 G 0.7 120 27 WYOMING. ML 3.4 (GS). 40 miles (65 km) SSE of Gillette. 27 20 13 34.1 41.123 N 112.885 W 0 G 0.4 126 8 UTAH. ML 1.4 (GS). 50 mles (75 km) W of Ogden. 27 22 07 05.0 46.770 N 122.768 W 0 G 0.4 130 7 WASHINGTON. 10 miles (15 km) ENE of Centralia. 28 15 19 08.4 40.530 N 112.206 W 0 G 0.3 71 9 UTAH. ML 1.4 (GS). Near Tooele. 28 22 20 11.5 46.767 N 122.775 W 0 G 0.5 63 14 WASHINGTON. ML 2.4 (GS). 10 miles (15 km) ENE of Centralia. 29 15 37 08.7 40.544 N 112.165 W 0 G 0.2 54 15 UTAH. ML 1.8 (GS). 5 miles (10 km) E of Tooele. 29 18 22 58.6* 32.847 N 109.281 W 0 G 0.7 188 4 ARIZONA. ML 1.4 (GS). 15 miles (20 km) S of Clifton. 29 21 50 03.6 46.771 N 122.756 W 0 G 0.5 79 11 WASHINGTON. ML 1.7 (GS). 10 miles (15 km) ENE of Centralia. 29 22 04 53.5* 40.350 N 107.799 W 0 G 0.2 217 9 COLORADO. ML 2.2 (GS). 20 miles (30 km) SW of Craig. 30 15 31 20.8 40.532 N 112.187 W 0 G 0.5 72 11 UTAH. ML 1.6 (GS). 5 miles (10 km) E of Tooele. 30 18 24 44.8 41.772 N 108.696 W 0 G 0.2 166 11 WYOMING. ML 2.8 (GS). 30 miles (50 km) ENE of Rock Springs. 30 19 44 07.0 40.555 N 112.210 W 0 G 1.0 69 13 UTAH. ML 1.4 (GS). 5 miles (10 km) E of Tooele. 30 20 01 41.0 43.761 N 105.334 W 0 G 0.6 123 11 WYOMING. ML 2.5 (GS). 40 miles (60 km) SSE of Gillette. 31 19 22 07.3 40.536 N 112.146 W 0 G 0.4 74 11 UTAH. ML 1.2 (GS). 10 miles (15 km) E of Tooele. 31 21 38 47.3 46.734 N 122.747 W 0 G 1.0 92 5 WASHINGTON. ML 1.5 (GS). 10 miles (15 km) E of Centralia.