U.S. DEPARTMENT OF THE INTERIOR                                                                         NO.  1-99-EXP
GEOLOGICAL SURVEY                                                                                        JUL  9, 1999
 
                                     PROBABLE MINING EXPLOSIONS IN THE UNITED STATES
 
                                                        JANUARY 1999
 
 
  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
 
06  18 46 15.1? 32.68  N  109.37  W    0 G           1.4    8  EASTERN ARIZONA. ML 2.7 (GS). 20 miles (40 km) ESE of
                                                                Safford, Arizona.
09  16 35 41.1  40.536 N  112.154 W    0 G           0.8   15  UTAH. ML 2.6 (GS). 5 miles (10 km) E of Tooele, Utah.
10  18 49 18.2  41.842 N  108.714 W    0 G           1.1   25  WYOMING. ML 3.3 (GS). 30 miles (50 km) NE of Rock Springs,
                                                                Wyoming.
12  23 02 32.4  40.380 N  107.802 W    0 G           1.4   12  COLORADO. ML 2.6 (GS). 15 miles (30 km) SW of Craig,
                                                                Colorado.
14  16 39 12.2  41.687 N  108.617 W    0 G           1.2   16  WYOMING. ML 2.4 (GS). 30 miles (50 km) ENE of Rock Springs,
                                                                Wyoming.
15  21 33 28.1* 32.715 N  109.319 W    0 G           0.7    7  EASTERN ARIZONA. ML 2.8 (GS). 25 miles (40 km) ESE of
                                                                Safford, Arizona.
16  17 00 32.6  41.793 N  108.711 W    0 G           1.1   17  WYOMING. ML 2.9 (GS). 30 miles (50 km) ENE of Rock Springs,
                                                                Colorado.
16  21 03 53.8  40.544 N  112.094 W    0 G           1.1   13  UTAH. ML 2.6 (GS). 10 miles (20 km) E of Tooele, Utah.
18  16 52 43.7  40.542 N  112.200 W    0 G           0.6   16  UTAH. ML 2.6 (GS). NEAR Tooele, Utah.
19  23 08 20.4  40.271 N  107.837 W    0 G           1.4   13  COLORADO. ML 2.8 (GS). 25 miles (40 km) SW of Craig,
                                                                Colorado.
20  18 50 59.0* 32.592 N  109.381 W    0 G           1.4   10  EASTERN ARIZONA. ML 2.8 (GS). 25 miles (40 km) SE of
                                                                Safford, Arizona.
21  23 00 52.4* 40.581 N  107.756 W    0 G           1.2    9  COLORADO. ML 2.7 (GS). 10 miles (20 km) WNW of Craig,
                                                                Colorado.
22  18 08 33.2  40.424 N  107.448 W    0 G           1.2   13  COLORADO. ML 2.5 (GS). 10 miles (10 km) SE of Craig,
                                                                Colorado.
24  16 49 17.9  40.528 N  112.198 W    0 G           1.2   17  UTAH. ML 2.5 (GS). 5 miles (10 km) E of Tooele, Utah.
25  20 06 31.6* 43.641 N  105.180 W    0 G           1.2   11  WYOMING. ML 3.1 (GS). 50 miles (80 km) SSE of Gillette,
                                                                Wyoming.
27  20 06 21.0  43.714 N  105.246 W    0 G           1.2   13  WYOMING. ML 3.3 (GS). 45 miles (70 km) SSE of Gillette,
                                                                Wyoming.
27  21 22 09.3  40.531 N  112.172 W    0 G           0.9   16  UTAH. ML 2.5 (GS). 5 miles (10 km) E of Tooele, Utah.
28  22 28 09.1  40.496 N  107.559 W    0 G           1.0   10  COLORADO. ML 2.7 (GS). NEAR Craig, Colorado.
30  21 17 20.4  41.786 N  108.796 W    0 G           0.9   22  WYOMING. ML 2.6 (GS). 25 miles (40 km) ENE of Rock Springs,
                                                                Wyoming.
31  18 48 10.9  40.570 N  112.211 W    0 G           0.8   18  UTAH. ML 2.5 (GS). NEAR Tooele, Utah.