The local facility has been making cyanide in North Memphis since the early 1950s.
DuPont's Memphis cyanide plant to become Chemours – Memphis Business Journal
Dupont is about to spin off a division which includes a Memphis cyanide factory.
Memphis Business Journal’s Facebook Wall via http://www.facebook.com/memphisbusinessjournal/posts/10153371106966880
https://memphissmbmedia.wordpress.com/2015/06/02/the-local-facility-has-been-making-cyanide-in-north-memphis-since-the-early-1950s/ from Memphis SMB Media