Since 1888 the Toledo Shipyard constructed cargo vessels for the U.S. Shipping Board to support World War I. Located on the Maumee River, the shipyard activates in vessel repairs and the fabrication and shipping of heavy industrial equipment. In 1906 the Toledo Shipyard was sold to American Ship Building Company and nowadays is operated by Ironhead Marine Inc. The American Ship Building Company built hundreds of ships in the Great Lakes region, commercial and military ships included. Asbestos was commonly used on vessels for construction and in equipment. Every worker helping in the construction of the ships or taking a role in maintenance or repair work of the equipment faced these risks.