Asco Valve.

It's a point of pride for ASCO Valve's 350 employees that one of the products manufactured at the Aiken, S.C., plant was instrumental in controlling the oil spill this summer in the Gulf of Mexico. If a substance flows--whether it's oil, air, water, gas or steam--ASCO produces the valves that control that flow. Many of these instruments are crucial in the operation of the world's nuclear plants. ASCO has...