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[UNITED STATES LIME & MINERALS, INC. LOGO]


                      UNITED STATES LIME & MINERALS, INC.
                                  NEWS RELEASE

FOR IMMEDIATE RELEASE                                 Contact: Timothy W. Byrne
                                                                  (972) 991-8400

             UNITED STATES LIME & MINERALS, INC. REPORTS SUCCESSFUL
                          COMPLETION OF RIGHTS OFFERING



         Dallas, Texas, February 12, 2001 - United States Lime & Minerals, Inc.
(NASDAQ: USLM) today reported the completion of its $10 million pro-rata rights
offering to existing shareholders. In the rights offering, the Company raised
$10 million in additional equity capital and issued 1,818,181 shares of common
stock at the subscription price of $5.50 per share. In doing so, it was able to
honor in full all over-subscription requests from its shareholders. The
Company's majority shareholder, Inberdon Enterprises Ltd., subscribed for its
full pro-rata amount and also purchased, at the $5.50 per share subscription
price, 461,005 additional shares not purchased by other shareholders in the
rights offering, for a total investment of approximately $7.63 million. As a
result of the rights offering, Inberdon now owns approximately 59% of the
Company's voting stock.

         United States Lime and Minerals, Inc. is a Nasdaq-listed public company
with headquarters in Dallas, Texas, supplying lime and limestone products
primarily to the steel, paper, agriculture, environmental protection, and
construction industries from its plants situated in Texas, Arkansas, and
Colorado.

         This news release contains "forward-looking statements" within the
meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking
statements in this news release, including without limitation statements
relating to the Company's plans, strategies, objectives, expectations,
intentions, and adequacy of resources, may be identified by words such as
"will," "could," "should," "believe," "expect," "intend," "plan," "schedule,"
"estimate," "project, " and similar expressions. The Company undertakes no
obligation to publicly update or revise any forward-looking statements, which
are based on management's current expectations and are subject to uncertainty
and change. Several factors and uncertainties, known and unknown, could cause
actual results to differ materially from those expected or anticipated as stated
or implied herein. Detailed information about these factors and uncertainties
and the Company's business and operations is contained in the Company's filings
with the Securities and Exchange Commission.

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