The local facility has been making cyanide in North Memphis since the early 1950s.

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
http://www.bizjournals.com
Dupont is about to spin off a division which includes a Memphis cyanide factory.
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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