Jefferson County is also fortunate in its deposits of fire clay. In this she stands first in the State with a production of tons out of for the whole State. While fire clay is found in connec tion with the coal mines over the most of the county, the industry is confined mainly to the stretch of five or six miles along the Ohio river beginning seven miles north of Steubenville. Both sides of the river are lined with works turning out sewer pipe, tiling and brick.