Detailed text transcripts for TV channel - MSNBC - 20170226:11:48:00
And the dallas hazardous materials team to determine the threat. >> our first interest when we arrived was to determine what we could based on ground level runoff and even the airborne particulates. we had three or four tests that we did initially. we checked the smoke. our testing on site indicated we had ammonium products, we had ketones, aldehydes. what you would typically see in any large industrial batching plant. >> while the team checks for toxins, local officials decide they can't afford to take any chances. hundreds of students from a school only a quarter mile away are taken by bus t...