In 1885, the Rochester and Pittsburgh Coal and Iron Company constructed the world's longest string of coke ovens in Walston, Pennsylvania, with 475 ovens over a length of 2 km (1.25 miles).
În 1885 Rochester and Pittsburgh Coal and Iron Company a construit cel mai lung lanț din lume de cuptoare de cocs din Walston, Pennsylvania, cu 475 de cuptoare întinse pe o lungime de 2 km.