The activist investors trying to take control of Norfolk Southern are picking up key support.

After receiving two bids to acquire it in the past month, U.S. Steel has told its shareholders that it is in the process of reviewing multiple offers for the storied company and symbol of American industrialization.

United States Steel Corp. seems poised to be soon purchased by a competitor, with two bidders revealed in a matter of days and more in the wings.

United States Steel Corp. said Sunday that it rejected a $7.3 billion buyout proposal from rival Cleveland Cliffs and was reviewing “strategic alternatives” after receiving several unsolicited offers.