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Green transition by Japan's largest steelmaker raises questions about challenges
Nippon Steel plans to build an electric arc furnace in the Yawata area of its Kyushu Works. (Photo by Toshiki Sasazu)
TOKYO -- Nippon Steel has begun the process of transitioning from blast furnaces to electric arc furnaces, seen as crucial for reducing the industry's emissions, but questions remain over the technology's huge energy needs and demand for costlier "green" steel.