Exhibit 23.3
CONSENT OF INDEPENDENT PETROLEUM ENGINEERS
DeGolyer and MacNaughton
5001 Spring Valley Road
Suite 800 East
Dallas, Texas 75244
March 2, 2018
United States Lime & Minerals, Inc.
5429 LBJ Freeway, Suite 230
Dallas, Texas 75240
Ladies and Gentlemen:
We consent to the use of the name DeGolyer and MacNaughton, to references
to DeGolyer and MacNaughton, and to the inclusion of information taken from our “Report as of December 31, 2016 on Reserves and Revenue of Certain Properties owned by United States Lime & Minerals, Inc.” and “Report as of December 31, 2015 on Reserves and Revenue of Certain Properties owned by United States Lime & Minerals, Inc.” under the sections “Item—Business—Natural Gas Interests” and “Item 8—Notes to Consolidated Financial Statements” in the United States Lime & Minerals, Inc. Annual Report on Form 10-K for the year ended December 31, 2016. We also consent to the inclusion of our letter report dated February 6, 2017, as Exhibit 99.1 in Item 15. We further consent to the incorporation by reference of said use, references, and the third-party letter report in the Registration Statements of United States Lime & Minerals, Inc. on Forms S-8 (File No. 333-161410 and File No. 333-196697).
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| Very truly yours, |
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| /s/ DeGolyer and MacNaughton |
| DeGOLYER and MacNAUGHTON |
| Texas Registered Engineering Firm F‑716 |