EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Harsco Corporation Savings Plan

Camp Hill, PA

We hereby consent to the incorporation by reference in the Registration Statement on Form S‑8 (No. 333-70710) of Harsco Corporation of our report dated June 21, 2017 relating to the financial statements and supplemental schedules of Harsco Corporation Savings Plan which appear in this Form 11-K for the year ended December 31, 2016.

/s/BDO USA, LLP

Harrisburg, Pennsylvania

June 21, 2017