The Nitro/Military Survey is located on WV25 in Kanawha county just east of the Sattes Bridge. It's almost exactly across the river from the last marker I posted.
My pawpaw worked for Monsanto, later Allied, back in the day. He was a First Class Repairman and welder, although he routinely had to pull shifts in the chemical areas. Primarily he worked with HF acid and asbestos! Imagine doing that today!
Note that this marker is leaning East because of soft soil.