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Capturing Waste Gas: Saves Energy, Lower Costs - Case Study, 2013

ArcelorMittal USA, Inc.'s Indiana Harbor steel mill in East Chicago, Indiana, installed an energy recovery boiler system that produces steam from previously wasted blast furnace gas that was flared into the atmosphere during iron making operations. The steam drives existing turbo-generators at the facility to generate 333,000 megawatt hours (MWh) of electricity and reduce CO2 emissions by 340,000 tons annually.