THE EE IS AN ELECTRICIAN WHO WAS WORKING UNDERGROUND BETWEEN SHIFTS TO INSTALL A TRANSFORMER. IN DOING SO, THEY HAD TO SHUT DOWN MINE POWER, INCLUDING THE VENTILATION FANS. AFTERWARDS, THE EE EXPERIENCED LUNG IRRITATION & CONGESTION & WENT TO DOCTOR ON 6/17. ALTHOUGH EE DID NOT SMELL, TASTE OR SEE NO2 GAS OR BLASTING FUMES, DR DIAGNOSED NO2 EXPOSURE, PLACED HIM ON STEROIDS & RESTRI