In 1911 the Dayton Steel Foundry installed a 2-ton converter and changed from crucible steel melting to making steel by the converter process.

While the Dayton Steel Foundry made steel castings by the converter process, Walther and his brother monitored new developments on electric furnaces.

When Shelton (new works) was constructed in 1964 it used a Swedish design Kaldo converter process which was very quick but the high cost of the refractories that had to be used and the life of them made it very expensive to operate.

Basic oxygen steelmaking (BOS, BOP, BOF, and OSM), also known as Linz-Donawitz- steelmaking or the oxygen converter process is a method of primary steelmaking in which carbon-rich molten pig iron is made into steel.