Instead, the company (KSTL: BUY) will increase coke usage and use higher quality iron ore as a feedstock. Concorde Capital: Previously Kryvorizhstal?s new management announced that the company?s objective was to fully replace open hearth technology with the oxygen converter process. This would eliminate the need for natural gas in the process of making steel from pig iron. All in all, given the resources and expertise of its new Owner Mittal Steel, Kryvorizhstal is poised to become Ukraine?s first steel major not reliant on natural gas.