SW POWER COMPANY'S POWER TRIPPED OFF AT ""POTASH JUNCTION"" DURING A THUNDER STORM. ALL POWER WAS LOST AT THE MINE. THE HOISTMAN ON DUTY CALL P.S.THE POWER WAS RETORED AT 1:00AM. WHILE THE ELECT RICAL POWER WAS OFF NO WORK WAS DONE IN THE MINE AFTER THE POWER WAS RESTORED, TESTS WERE MADE WITH BOTH HOISTS AND PRODUCTION RESUMED.