There would be a few jobs for a CNC machinist in Russellville. There's the possibility of working at the nuclear plant. I don't remember how many machinists they have on staff but there are a few. If your husband doesn't mind a commute, there are plenty of places in Conway he could work. Conway would be a bit over 30 minutes from Russellville/London. It's not a terrible commute by national standards but would be considered ridiculous by Arkansas standards. The local paper would be
The Courier, Russellville, Ark.. You can check and see what local machinist jobs there are.