Dolch sells "industrial" computers. These computers are supposed to be "hardened" enabling it to be used is dangerous/ possibly damaging environments.
Quote
Mobile computing in harsh environments calls for an environmentally sealed and ruggedized portable computer.
From here:
http://www.dolch.com/html/home_dolch.html
Though if it was up to me I would buy 15 or so Dells, and toss them when the were too damaged to repair.
Vern