CLEVELAND--(BUSINESS WIRE)--Cleveland-Cliffs Inc. (NYSE: CLF) announced today that it has successfully completed a hydrogen (H2) injection trial at its Indiana Harbor #7 blast furnace, the largest blast furnace in North America. This represents the second Cleveland-Cliffs blast furnace to utilize hydrogen as a reductant and fuel source, following the successful trial at Middletown Works in May of 2023. Indiana Harbor #7 is among the largest blast furnaces in the entire world, both in size and production cap ...