Westward Environmental, Inc.

4 Shooting Club Road

Boerne, Texas, USA 78006

CONSENT OF THIRD-PARTY QUALIFIED PERSON

Westward Environmental, Inc. (“Westward”), in connection with the annual report on Form 10-K and any amendments or supplements and/or exhibits thereto (collectively, the Form 10-K), consent to:

● the filing and use of the technical report summary titled “Technical Report Summary, Colado Site, Pershing County, Nevada” (the “Colado Technical Report Summary”), with an effective date of December 31, 2021, as an exhibit to and referenced in the Form 10-K;

● the use of and references to our firm name, including our status as an expert or “qualified person” (as defined in Subpart 1300 of Regulation S-K promulgated by the Securities and Exchange Commission), in connection with the Form 10-K and any such Colado Technical Report Summary; and

● the information derived, summarized, quoted or referenced from the Colado Technical Report Summary, or portions thereof, that was prepared by us, that we supervised the preparation of and/or that was reviewed and approved by us, that is included or incorporated by reference in the Form 10-K.

Westward is responsible for contributing to, and this consent pertains to, the following Sections of the Colado Technical Report Summary:

1.0Executive Summary

2.0Introduction

3.0Property Description

4.0Accessibility, Climate, Local Resources, Infrastructure and Physiography

5.0History

6.0Geologic Setting, Mineralization and Deposit

7.0Exploration

8.0Sample Preparation, Analyses & Preparation

9.0Data Verification

10.0Mineral Processing and Metallurgical Testing

11.0Mineral Resource Estimate

12.0Mineral Reserve Estimate

17.0Environmental Studies, Permitting, Plans, Negotiations or Agreements with Local Individuals or Groups

20.0    Adjacent Properties

21.0    Other Relevant Data and Information

22.0    Interpretations and Conclusions

23.0    Recommendations & Associated Costs

24.0    References

25.0    Reliance on Information Provided By Registrant

Westward also consents to the incorporation by reference in Registration Statements on Form S-8 (Nos. 333-256389, 333-238198, 333-204062, 333-179480) and Form S-3ASR (No.333-258323) of U.S. Silica Holdings, Inc. of the above items as included in the Form 10-K.

Westward Environmental, Inc.

/s/ Thomas O. Mathews______________

Thomas O. Mathews, PG, REM

President

Westward Environmental, Inc., a Qualified Third-Party Firm

Dated this February 24, 2022