U.S. Silica (SLCA) S-8 Registration of securities for employees

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We have issued our reports dated February 25, 2020 with respect to the consolidated financial statements and internal control over financial reporting of U.S. Silica Holdings, Inc. included in the Annual Report on Form10-K for the year ended December 31, 2019, which are incorporated by reference in this Registration Statement. We consent to the incorporation by reference of the aforementioned reports.

/s/ GRANT THORNTON LLP

Houston, Texas

May 12, 2020