The releases were 1 ton releases (at least the videos in the presentation were the 1-ton releases). The presentation does an EXCELLENT job showing how these two chemicals differ when released. Along with the Seward, IL Ammonia video footage, this footage confirms that NH3 will act as a “heavier-than-air” gas when it is released in very large quantaties. Enough of my bable, just watch the presentation…
Donald P. Storwold Jr., U.S. Army, Dugway Proving Ground, UT; and E. P. Argenta Jr., J. M. White, J. C. Pace, and S. B. Fox present the results of their DHS release study. The presentation (w/ voice over and video) is OUTSTANDING! Every user of Anhydrous Ammonia and Chlorine should be required to view this presentation… as it is a MAJOR eye-opener.
http://ams.confex.com/ams/91Annual/flvgateway.cgi/id/17002?recordingid=17002