Special-purpose sulfur concrete construction materials, based on sulfur polymer cement (SPC) and mineral aggregate, have been developed by the U.S. Bureau of Mines as part of a program to utilize domestic mineral resources. This paper describes the research related to development of SPC, the sulfur polymer concrete (SC), and the industial testing, together with the development of commercial-scale equipment and a brief overview of some recent special-purpose applications. The materials have been evaluated in over 50 industrial process environments in a cooperative testing program with the Sulphur Institute and industry. The use of SC for resisting salt corrosion in marine environments and its rapid- setting, high-strength characteristics for use in the transportation industry are being deomonstrated and evaluated. Commercial-scale equipment has been developed and utilized for large-scale construction applications. State-of-the-art production and construction techniques are described. Currently, SC materials are showing superior performance characteristics, compared to portland cement concrete in general industrial applications and are demonstrating versatility for use in many other special-purpose construction applications.