Elkcast Aluminum, Inc., 205 E Centralia St, Elkhorn, WI 53121, US

Established in 1945, Olson Aluminum Castings is a custom sand foundry that produces industrial grade, pressure-tight and leak-free castings. Based in Rockford, Ill., the company serves a variety of industries, including hydraulics, pneumatics, industrial controls, electric motors, power tools, construction, railroad as well as lab equipment manufacturing firms. It offers a wide range of products and services, such as pressure-tight and leak-free castings, superior surface finishes, prototype castings as well as Six Sigma designs. Olson Aluminum Castings is an ISO 9001:2000 certified company and is a member of the American Foundrymen s Society.