Ed: Click images to enlarge.
Photo taken by Linus Nylén at Bromma Airport, Stockholm, 27th of March 2014.
Follow · 29 March
De-Icing fluid, taken Stockholm airport March 2014
EPA airport run off report page 187 see snapshot table below e.g BARIUM CADMIUM ?
The first following U.S. patent is to “the United States Of America as represented by the Secratary of the Navy” for a “contrail generation apparatus” in which “light scattering pigment powder particles” are “dispensed from a jet mill deagglomerator as seperate single particles to produce a powder contrail having maximum visibility or radiation scattering ability for a given weight material“.