Nippon Steel Corp. said it achieved the world’s first carbon dioxide (CO2) emission cut of 43 percent by using hydrogen instead of coal in a blast furnace.

Blast furnaces burn iron ore and coke, a purified form of coal, in volcanic temperatures to make the pig iron that's turned into steel for cars, appliances, buildings and countless other uses.

U.S. Steel has said it needs the cash from Nippon Steel to keep investing in blast furnaces like the ones in Pennsylvania.

In making its nearly $15 billion bid for the storied Pittsburgh-based steelmaker, Nippon Steel had promised to invest $2.7 billion in U.S. Steel’s aging blast furnace operations in Gary, Indiana ...

The U.S. Steel Granite City plant, pictured here Wednesday, Sept. 20, 2023, is among the facilities facing uncertainty after President Joe Biden blocked Nippon Steel’s proposed takeover of the ...

Newly arranged Nippon Steel deal would ensure U.S. Steel has U.S. CEO, majority board, and government veto power to resolve national security concerns in $14B investment.

Electric arc furnaces melt steel scrap to make new steel products, while in a conventional blast furnace, coke made from coal is used for smelting iron ore.

Both blast furnaces at the former U.S. Steel mill remain idled. Earlier this week, Craig McKey, the president of United Steelworkers Local 1899, said the mill employs roughly 900 employees.

Nippon’s potential investments in American steel include extending the life of one facility’s coal-based furnace.

Nippon Steel has yet to say anything about whether it is willing to accept the concept in place of its bid to buy the company.

President Donald Trump has signed an executive order paving the way for a Nippon Steel investment in U.S. Steel, so long as the Japanese company complies with a "national security agreement ...