INCIDENT 2008-01 INTERNATIONAL BORAX MINE COLLAPSE

2008-07-07T1430

PRIORITY

FROM: GEOLOGICAL SURVEY//GLENCOE//

TO: NATIONAL EMERGENCY OPERATIONS CENTER//GLENCOE//

PROVINCE OF THE NORTH EMERGENCY OPERATIONS CENTER//ASTORIA//

PROVINCE OF THE NORTHWEST EMERGENCY OPERATIONS CENTER//HOGBEN//

ARMY OPERATIONS CENTER//FORT FRANK//GLENCOE

INFO: ALL MINISTRIES//GLENCOE//

SUBJ: MAGNITIUDE 4.2 EARTHQUAKE SOUTHWEST OF CARSON WELLS

UNCLASS

1.  AT 2008-07-07T1258 A MOMENT MAGNITUDE 4.2 EARTHQUAKE OCCURRED WITH AN EPICENTER 25 KILOMETERS SOUTHWEST OF CARSON WELLS AT A DEPTH OF 5.8 KILOMETERS, ALONG THE STRAIGHT DRIFT. 

2.  THE EARTHQUAKE WAS FELT AS A MODIFIED MERCALLI INTENSITY (MMI) III QUAKE IN CARSON WELLS, AND AS A MMI II AT ARCHERS PASS AND DRY GULCH.  THE QUAKE IS REPORTED TO HAVE TRIGGERED A LANDSLIDE IN THE PIT OF THE INTERNATIONAL BORAX COMPANY OPEN PIT MINE SOUTH OF CARSON WELLS, TRAPPING 20 MINERS, AND THERE IS REPORTED GROUND RUPTURE WHERE STRAIGHTS DRIFT CROSSES TRAIL 1 40 KILOMETERS SOUTHWEST OF CARSON WELLS.

JOHANNA SENDS