What was the name of Thomas Edison’s cement company, founded in 1899?

Thomas Edison’s cement business, founded in 1899, was the Edison Portland Cement Company.

Edison became interested in improving cement manufacture and developed machinery intended to make the process more efficient. His company operated a cement plant in Stewartsville, New Jersey, using rotary kilns and other industrial equipment.

The enterprise also explored ways to use finely ground cement in construction. Edison promoted concrete houses made with a single pour, although this housing idea did not achieve broad commercial success. The company nevertheless produced cement for practical construction projects, including parts of Yankee Stadium.

The business is sometimes confused with Edison’s mining ventures, which focused on processing iron ore. Cement was a separate later enterprise, reflecting Edison’s continuing interest in applying large-scale machinery to materials and manufacturing.