Location: Coatesville, Chester County
Dates of Operation: 1881 to 1915
Owners: J. Sharpless and William P. Worth
Historical Significance: Worth Brothers Company was a major producer of steel plates, and was a competitor of Lukens Steel Company. Worth produced unusually large plates for the late 1800s: weight of the largest plate produced was 1 ton (2,000 pounds), while the average was between 600 and 1,200 pounds. Twice the company held the record of producing the largest plates in America with their 132” plate mill in 1897 and their 152” plate mill in 1905.