CERTIFICATE OF AMENDMENT OF RESTATED CERTIFICATE OF INCORPORATION Harsco Corporation, a corporation duly organized and existing under and by virtue of the General Corporation Law of the State of Delaware (the "Corporation") does hereby certify that: 1. The Restated Certificate of Incorporation of the Corporation is hereby amended by changing Article FIRST, so that, as amended said Article shall read as follows: The name of the Corporation is Enviri Corporation. 2. The foregoing amendment was duly adopted in accordance with the provisions of Section 242 of the General Corporate Law of the State of Delaware. IN WITNESS WHEREOF, the Corporation has caused this certificate to be executed by its duly authorized officer as of this 5th day of June, 2023. By; _j�'etJ.��:._::::::_L'Jj Name: Title: Corporate Secretary