Formed in 1886 on the Lake Erie Island of Kelley's Island, Ohio, the Kelley Island Lime & Transport Company was also known by its initials, KIL&T. It was once the world's largest producer of limestone and lime. The firm began quarry operations on Kelley's Island in 1886 and was dissolved in the early 1960s. Company operations were located in Ohio, New York, and West Virginia. Main sites were Kelley's Island (1886-1940) and nearby Marblehead, Ohio (1890s-1955). In 1922, KIL&T built the world's largest stone crushing plant at Marblehead. It also owned many lime kilns and produced lime products.