UNITED STATES LIME & MINERALS INC
10-K405, 1999-03-05
MINING & QUARRYING OF NONMETALLIC MINERALS (NO FUELS)
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<PAGE>   1
                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                    FORM 10-K

(Mark One)
              (X)  ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
                   For the fiscal year ended December 31, 1998
                                       OR
              ( )  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                          Commission File Number 0-4197

                       UNITED STATES LIME & MINERALS, INC.
                       -----------------------------------  
             (Exact name of Registrant as specified in its charter)

         TEXAS                                          75-0789226 
 ----------------------                                 ----------
(State of incorporation)                 (I.R.S. Employer Identification Number)
         

12221 MERIT DRIVE, SUITE 500, DALLAS, TEXAS               75251            
- -------------------------------------------            ----------
  (Address of principal executive offices)             (Zip Code)
           

       Registrant's telephone number, including area code: (972) 991-8400


           SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:

                                            Name of Each Exchange on
              Title of Each Class               Which Registered
              -------------------               ----------------
 
                                      None

           SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT:

                          Common Stock, $.10 par value

         Indicate by check mark whether the Registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
Registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.   Yes [X]  No [ ]

         Indicate by a check mark if disclosure of delinquent filers pursuant to
Item 405 of Regulation S-K is not contained herein, and will not be contained,
to the best of Registrant's knowledge, in definitive proxy or information
statements incorporated by reference in Part III of this Form 10-K or any
amendment of this Form 10-K. [X]
         
         The aggregate market value of Common Stock held by non-affiliates as of
February 25, 1999: $15,158,432.

         Number of shares of Common Stock outstanding as of February 25, 1999:
3,977,189.

                       DOCUMENTS INCORPORATED BY REFERENCE

         Part III incorporates information by reference from the Registrant's
definitive Proxy Statement to be filed for its 1998 Annual Meeting of
Shareholders. Part IV incorporates certain exhibits by reference from the
Registrant's previous filings.



<PAGE>   2


                                TABLE OF CONTENTS
<TABLE>

<S>                   <C>                                                                         <C>   
PART I
     ITEM I.     BUSINESS................................................................... 1
                 General.................................................................... 1
                 Business and Products...................................................... 1
                 Product Sales.............................................................. 1
                 Order Backlog.............................................................. 2
                 Seasonality................................................................ 2
                 Limestone Reserves......................................................... 2
                 Mining..................................................................... 2
                 Plant and Facilities....................................................... 3
                 Employees.................................................................. 3
                 Competition................................................................ 3
                 Environmental Matters...................................................... 4
                 Disposition of Assets...................................................... 4

     ITEM 2.     PROPERTIES................................................................. 5

     ITEM 3.     LEGAL PROCEEDINGS.......................................................... 5

     ITEM 4.     SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS........................ 5

PART II

     ITEM 5.     MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED
                    STOCKHOLDER MATTERS..................................................... 5

     ITEM 6.     SELECTED FINANCIAL DATA.................................................... 6

     ITEM 7.     MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
                    CONDITION AND RESULTS OF OPERATIONS..................................... 7

     ITEM 7A.    QUANTITATIVE AND QUALITATIVE DISCLOSURES
                     ABOUT MARKET RISK......................................................14 

     ITEM 8.     FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA................................14 

     ITEM 9.     CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON
                    ACCOUNTING AND FINANCIAL DISCLOSURE.....................................15 

PART III         ...........................................................................15 

PART IV

     ITEM 14.    EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS
                    ON FORM 8-K.............................................................15 

SIGNATURES       ...........................................................................19 
</TABLE>


                                       -i-


<PAGE>   3




                       UNITED STATES LIME & MINERALS, INC.
                                    FORM 10-K
                      For the Year Ended December 31, 1998


                                     PART I



ITEM 1.           BUSINESS.


         GENERAL. The business of United States Lime & Minerals, Inc. (the
"Company" or the "Registrant"), which was incorporated in 1950, is the
production and sale of lime and limestone products. The Company extracts
high-quality limestone from its quarries and then processes the limestone for
sale as pulverized limestone, quicklime, and hydrated lime. In 1998, these
operations were conducted through two wholly-owned subsidiaries of the Company:
Arkansas Lime Company and Texas Lime Company. References to the Company herein
include references to its subsidiaries. The Company sold substantially all of
the assets of its subsidiary, Corson Lime Company, on June 21, 1997. See
"Business - Disposition of Assets."

         The Company's principal corporate office is located at 12221 Merit
Drive, Suite 500, Dallas, Texas 75251.


         BUSINESS AND PRODUCTS. The Company extracts raw limestone and then
processes it for sale as pulverized limestone, quicklime, and hydrated lime.
Pulverized limestone, also referred to as ground calcium carbonate ("GCC"), is a
dried product ground to granular and finer sizes. Quicklime is produced when
carbon dioxide is removed from limestone in a heat process called calcination.
Hydrated lime is formed in a process called hydration in which water is added to
quicklime to produce a soft powder.

         Pulverized limestone is used primarily in the production of
construction materials such as asphalt paving and roofing shingles, as an
additive to agriculture feeds, and as a soil enhancement. Quicklime is used
primarily in the manufacturing of paper products, in sanitation and water
filtering systems, in metal processing, and in soil stabilization for highway
and building construction. Hydrated lime is used primarily in municipal
sanitation and water treatment, in soil stabilization for highway and building
construction, in the production of chemicals, and in the production of
construction materials such as stucco, plaster and mortar.


         PRODUCT SALES. In 1998, the Company sold its lime and limestone
products primarily in the states of Arkansas, Kansas, Louisiana, Mississippi,
Missouri, New Mexico, Oklahoma, Tennessee, and Texas. Sales at Arkansas Lime
Company and Texas Lime Company are made primarily by the Company's six sales
employees. Sales personnel call on potential customers and solicit orders which
are generally made on a purchase-order basis. The Company also receives orders
in response to bids that it prepares and submits to potential customers.

         Principal customers for the Company's lime and limestone products are
highway, street and parking lot contractors, chemical producers, paper
manufacturers, roofing shingle manufacturers, glass manufacturers, municipal
sanitation and water treatment facilities, poultry and cattle feed producers,
governmental agencies, steel producers, and electrical utility companies.

         Approximately 650 customers accounted for the Company's sales of lime
and limestone products during the year ended December 31, 1998. No single
customer accounted for more than 10% of such sales. The Company is not subject
to significant customer risks as its customers are considerably diversified as
to geographic location and industrial concentration. However, given the nature
of the lime and limestone industry, the Company's profits are very sensitive to
changes in volume.




                                      -1-
<PAGE>   4

         Lime and limestone products are transported by rail and truck to
customers generally within a radius of 400 miles of each of the Company's
processing plants. Sales of lime and limestone products are highest during the
months of March through November.

         Substantially all of the Company's sales are made within the United
States.


         ORDER BACKLOG. The Company does not believe that backlog information
accurately reflects anticipated annual revenues or profitability from year to
year.

         SEASONALITY. The Company's sales have historically reflected seasonal
trends, with the largest percentage of total annual revenues being realized in
the second and third quarters. Lower seasonal demand normally results in reduced
shipments and revenues in the first and fourth quarters. Inclement weather
conditions generally have a negative impact on the demand for lime and limestone
products.

         LIMESTONE RESERVES. The Company currently extracts limestone from two
open-pit quarries, both of which are Company-owned. The Texas Lime Company is
located 14 miles from Cleburne, Texas, and the Arkansas Lime Company is located
near Batesville, Arkansas. Access to each location is provided by paved roads.

         Texas Lime Company operates upon a tract of land containing
approximately 470 acres, including the Cleburne Quarry. In January 1999, the
Company purchased an additional approximately 400 acres of land and now owns
approximately 2,700 acres adjacent to the quarry containing known high-quality
limestone reserves in a bed averaging 28 feet in thickness, with an overburden
that ranges from 0 to 50 feet. The Company also has mineral interests in
approximately 560 acres of land adjacent to the northwest boundary of the
Company's property. The total calculated reserves are approximately 135,000,000
tons. Assuming the present level of production at the quarry is maintained, the
Company estimates the reserves are sufficient to sustain operations for
approximately 100 years.

         Arkansas Lime Company operates the Batesville Quarry and has lime and
limestone production facilities on a second site linked to the quarry by its own
railroad. The quarry operations cover approximately 725 acres of land containing
a known deposit of high-quality limestone. The average thickness of the
high-quality limestone deposit is approximately 70 feet, with an average
overburden thickness of 35 feet. In 1998, the Company conducted an extensive
drilling program that confirmed the resource to have approximately 23,500,000
tons of proven reserves plus an additional 3,000,000 tons of probable reserves.
In 1997, the Company purchased approximately 325 additional acres adjacent to
the present quarry containing additional high-quality limestone. The anticipated
average thickness of this high-quality limestone deposit is approximately 55
feet, with an average overburden of 20 feet. The 1998 drilling program confirmed
these additional probable reserves to be 30,500,000 tons. Assuming the present
level of production at the quarry is maintained, the Company estimates that
reserves are sufficient to sustain operations for approximately 100 years (50
years based on projected production levels after the planned Arkansas
expansion).

         MINING. The Company extracts limestone by the open-pit method at its
two operating quarries. The open-pit method, which consists of removing the top
layer of soil, trees, and other substances and then extracting the exposed
limestone, is generally less expensive than underground mining. The principal
disadvantage of the open-pit method is that operations are subject to inclement
weather. To extract limestone, the Company utilizes standard mining equipment
which is Company-owned. After extraction, limestone is crushed, screened, and
ground in the case of pulverized limestone, or further processed in kilns and
hydrators in the case of quicklime and hydrated lime, before shipment. The
Company has no knowledge of any recent changes in the physical quarrying
conditions on any of its properties which have materially affected its mining
operations, and no such changes are anticipated.


                                      -2-
<PAGE>   5


         PLANTS AND FACILITIES. The Company produces lime and limestone products
at two plants: 

         Following the recent completion of a modernization and expansion
project at the Texas plant, the plant now has an annual capacity of 470,000 tons
of quicklime from three rotary kilns. The plant has pulverized limestone
equipment which has a capacity to produce 700,000 tons of pulverized limestone
annually, depending on the product mix. The Texas project included the
installation of a new stone crushing and handling system, the addition of a
preheater to one of the existing kilns, additional storage, screening, and
shipping capacity, and a new support building housing a laboratory and
administrative and shop facilities. See "Management's Discussion and Analysis of
Financial Condition and Results of Operations - Liquidity and Capital
Resources." In addition to the Cleburne plant, the Company owns a dormant plant
which is located near Blum, Texas on a tract of land covering approximately 40
acres. The Blum plant was acquired in 1989, and its kilns have not been operated
since that time; however, the plant's storage and shipment facilities are
currently being utilized.

         The Arkansas Lime production plant is situated on a tract of 290 acres
located approximately two miles from the Batesville Quarry to which it is
connected by a Company-owned railway. Utilizing six vertical kilns, this plant
has an annual capacity of 85,000 tons of quicklime. The plant has two grinding
systems which, depending on the product mix, have the capacity to produce
700,000 tons of pulverized limestone annually. The Company has completed an
evaluation of, and has determined to proceed with, a modernization and expansion
of the Arkansas facility to be completed in two phases. As presently planned,
Phase I will cover the redevelopment of the quarry plant, rebuilding of the
railroad, establishment of an out-of-state terminal, and installation of a
rotary kiln with preheater, along with increased product storage and loading
capacity. Completion of this phase, currently scheduled for mid-year 2000, will
provide a modern lime works with an annual capacity up to approximately 200,000
tons of quicklime. Phase II would further expand lime production capacity to
approximately 350,000 tons of quicklime by the installation of a second kiln
with additional storage capacity. Phase II is scheduled for completion in the
first half of 2001, although the Company could defer this phase depending on
factors such as market demand and availability of financing. See "Management's
Discussion and Analysis of Financial Condition and Results of Operations -
Liquidity and Capital Resources."

         The Company maintains lime hydrating equipment and limestone drying
equipment at both plants. Storage facilities for lime and pulverized limestone
products at each plant consist primarily of cylindrical tanks, which are
considered by the Company to be adequate to protect its lime and limestone
products and to provide an available supply for customers' needs at the existing
volume of shipments. Equipment is maintained at each plant to load trucks, and
at the Arkansas and Blum plants to load railroad cars.

         The Company believes that its processing plants are adequately
maintained and insured. Although the Texas plant has recently been modernized,
much of the equipment at the Arkansas plant is aging and therefore will require
significant future maintenance, however, the planned Arkansas modernization and
expansion project will replace the majority of this old equipment: See
"Management's Discussion and Analysis of Financial Condition and Results of
Operations - Liquidity and Capital Resources" regarding the Company's capital
expenditures for modernizing, expanding, and re-equipping the plants.

         EMPLOYEES. The Company employed, at December 31, 1998, 200 persons, 28
of whom are engaged in sales, administrative, and management activities. Of the
Company's 172 production employees, 129 are covered by collective bargaining
agreements. These agreements expire as follows:

                         Texas facility in November 1999
                       Arkansas facility in December 1999


         COMPETITION. The lime and limestone industry has certain limiting
factors, including: the availability of high-quality limestone (calcium
carbonate) reserves, the ability to secure mining and operating permits for a
facility, the cost of building processing plants to create the lime and
limestone products, and the 




                                      -3-
<PAGE>   6

transportation costs associated with delivering the products to customers. There
is not a large number of producers in the United States as a whole, and
producers tend to concentrate on known limestone formations where competition
takes place on a local basis. The industry as a whole has expanded its customer
base and, while the steel industry is still the largest market sector, also
counts pulp and paper producers and road builders among its major customers. In
recent years, the environmental-related uses for lime have been expanding,
including use in flue gas desulfurization and the treatment of both waste and
potable water. 

         There is a continuing trend of consolidation in the lime and limestone
industry. In addition to the consolidations, and often in conjunction with
consolidations, many lime producers have undergone modernization and expansion
projects to upgrade their processing equipment in an effort to improve their
operating efficiency. The Company's modernization and expansion projects should
allow it to continue to be competitive in the future. In addition, the Company
will continue to evaluate external opportunities for expansion.


         ENVIRONMENTAL MATTERS. The Company's operations are subject to various
federal, state, and local environmental laws and regulations, including the
Clean Air Act, the Clean Water Act, the Resource Conservation and Recovery Act,
and the Comprehensive Environmental Response, Compensation, and Liability Act,
as well as the Toxic Substances Control Act. Management does not believe that
any lack of compliance by the Company with applicable environmental laws would
have a materially adverse effect on the Company's financial condition, results
of operation, or cash flows. In part in response to requirements of
environmental regulatory agencies, the Company incurred capital expenditures of
approximately $197,000 in 1998 and $117,000 in 1997 on environmental compliance
and is planning to incur approximately $100,000 in 1999 excluding major capital
projects. See "Management's Discussion and Analysis of Financial Condition and
Results of Operations - Liquidity and Capital Resources." In the judgment of
management, forecastable expenditure requirements for the future are not of such
dimension as to have a materially adverse effect on the Company's financial
condition, results of operation, or cash flows. The Company's recurring costs
associated with managing and disposing of potentially hazardous substances (such
as fuels and lubricants used in operations) and maintaining pollution control
equipment amounted to approximately $167,000 in 1998 and $80,000 in 1997. The
Company has not been named as a potentially responsible party in any superfund
cleanup site.

         DISPOSITION OF ASSETS. Effective June 21, 1997, Corson Lime Company, a
wholly owned subsidiary of the Company, ceased operations and sold substantially
all of its aggregate and lime assets for $8,231,000 in cash, including a
$376,000 note collected in October 1997. The proceeds, net of expenses,
generated by the sale were used to partially fund the Texas plant modernization
and expansion project. See "Management's Discussion and Analysis of Financial
Condition and Results of Operations" and Note 7 of Notes to Consolidated
Financial Statements for discussions regarding the disposition.





                                      -4-
<PAGE>   7


ITEM 2. PROPERTIES.

         Reference is made to Item 1 of this Report for a description of the
properties of the Company, and such description is hereby incorporated by
reference in answer to this Item 2. As discussed in Note 2 of Notes to
Consolidated Financial Statements, plant facilities and mineral reserves are
subject to encumbrances to secure the Company's loans.


ITEM 3. LEGAL PROCEEDINGS.

         Information regarding legal proceedings is set forth in Note 6 of Notes
to Consolidated Financial Statements and is hereby incorporated by reference in
answer to this Item 3.


ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

         The Company did not submit any matters to a vote of security holders
during the fourth quarter of 1998.


                                     PART II



ITEM 5.  MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS.

         The Company's Common Stock is quoted on the Nasdaq National Market
under the symbol "USLM." As of February 25, 1999, the Company had 852
stockholders of record.

         As of December 31, 1998, 500,000 shares of $5.00 par value preferred
stock were authorized, and none was issued.

         The high and low sales prices for the Company's Common Stock for the
periods indicated, as well as dividends declared, were:

<TABLE>
<CAPTION>
                                1998                                          1997                      
                 -------------------------------------       -------------------------------------
                       MARKET PRICE                                MARKET PRICE         
                 -----------------------     DIVIDENDS       ------------------------    DIVIDENDS
                   LOW            HIGH       DECLARED           LOW           HIGH       DECLARED   
                 ---------     ---------   -----------       ---------      ---------   ----------   
<S>              <C>           <C>           <C>             <C>            <C>           <C>   
First Quarter    $  6 1/2      $  9          $0.025          $  6 1/4       $  9          $0.025
Second Quarter   $  7 3/4      $  9 1/8      $0.025          $  6 5/8       $  9 1/8      $0.025        
Third Quarter    $  6 5/16     $  8 3/4      $0.025          $  7 1/2       $  9 1/4      $0.025         
Fourth Quarter   $  6          $  8          $0.025          $  6 5/8       $  9 1/2      $0.025
</TABLE>




                                      -5-
<PAGE>   8




ITEM 6.       SELECTED FINANCIAL DATA.

(dollars in thousands, except per share amounts)

<TABLE>
<CAPTION>
                                                                    YEARS ENDED DECEMBER 31,                        
                                        --------------------------------------------------------------------------
                                            1998             1997           1996           1995            1994   
                                        -----------      -----------    -----------     -----------    -----------
<S>                                    <C>                   <C>            <C>             <C>            <C>    
Operating results
     Revenues                          $     28,769          32,404         40,159          41,419         36,865 
                                       ============          ======         ======          ======         ====== 
     Net income                        $      2,929           3,096(a)       2,602           4,260          1,916(b)
                                       ============          ======         ======          ======         ====== 


Income per share of common stock
     Basic earnings                    $       0.74            0.79           0.67            1.11           0.50
                                       ============          ======         ======          ======         ====== 
     Diluted earnings                  $       0.74            0.78           0.66            1.11           0.50
                                       ============          ======         ======          ======         ====== 
</TABLE>


<TABLE>
<CAPTION>

                                                                     AS OF DECEMBER 31,                           
                                       ----------------------------------------------------------------------------
                                            1998             1997            1996           1995            1994   
                                       -------------      -----------    -----------     -----------    -----------
<S>                                    <C>                <C>            <C>             <C>            <C>   
     Total assets                      $     51,090          33,520         31,319          29,793         27,397

     Long-term debt, excluding
         current installments          $     16,196           2,167          3,238           4,381          6,225

     Stockholders' equity per
         outstanding share             $       6.70            6.11           5.40            4.89           3.86

     Cash dividends per share          $       0.10            0.10           0.10           0.075              -

     Employees at year-end                      200             201            318             338            313
</TABLE>

- -----------------------------------
                  (a) Includes a loss on sale of Corson Lime Company assets of
                      $405, net of related tax benefit ($506 gross), and the
                      recognition of $2,300 in previously reserved deferred tax
                      assets.


                  (b) Includes a gain of $372, net of related taxes ($425
                      gross), due to the expiration of certain potential
                      post-closing obligations relating to the sale of Virginia
                      Lime Company assets.



See "Management's Discussion and Analysis of Financial Condition and Results of
Operations," and Notes to Consolidated Financial Statements.





                                      -6-
<PAGE>   9






ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
        OF OPERATIONS.


RESULTS OF OPERATIONS.

         The following table sets forth selected financial information of the
Company expressed as a percentage of revenues for the periods indicated:


<TABLE>
<CAPTION>

                                                                             Years Ended December 31,              
                                                                ----------------------------------------------------
                                                                      1998              1997               1996     
                                                                --------------     --------------    ---------------
<S>                                                                    <C>                <C>               <C>  
Revenues                                                               100 %              100 %             100 %

Cost of revenues
     Labor and other operating expenses                                (66)               (73)              (71)
     Depreciation, depletion and amortization                          (10)               (10)               (9)
                                                                   -------           --------           -------
        GROSS PROFIT                                                    24                 17                20

Selling, general and administrative expenses                           (12)               (14)              (11)
                                                                   -------           --------           -------
        OPERATING PROFIT                                                12                  3                 9

Other (deductions) income:
     Interest expense                                                    -                 (1)               (1)
     Other, net                                                          1                  2                 -

Federal and state income tax benefit (expense)                          (3)                 6                (2)
                                                                   -------           --------           -------

        NET INCOME                                                      10 %               10 %               6 %
                                                                   =======           ========           ======= 
</TABLE>



                                  1998 VS 1997

         Revenues decreased from $32,404,000 in 1997 to $28,769,000 in 1998, a
decrease of $3,635,000 or 11.2%. The decrease in revenues resulted from the sale
of the assets of the Company's Corson Lime Company subsidiary in June 1997.
Excluding Corson, revenues increased by $1,268,000, or 4.6%, from 1997,
resulting from a 3.6% increase in sales volume and 1.0% increase in sales
prices. Demand remained strong in the Texas market during 1998, but sales at
Texas were negatively impacted by the inevitable production inefficiencies
caused by the extensive construction activities that took place at that facility
in 1998. Arkansas continued to be negatively impacted by production
inefficiencies at the facility resulting from the antiquated plant.

         The Company's gross profit was $7,061,000 for 1998 compared to
$5,419,000 for 1997, a 30.3%, or $1,642,000 increase. The 1998 gross profit was
improved principally by eliminating the high production costs at the Corson
operations, partially offset by higher fuel costs in the first half of 1998.



                                      -7-
<PAGE>   10

         Selling, general and administrative ("SG&A") expenses decreased from
$4,520,000 in 1997 to $3,489,000 in 1998, a 22.8% decrease. In 1997, SG&A was
negatively impacted by a one-time severance payment due to a former employee
under an employment agreement and additional professional consulting fees. SG&A
expenses decreased as a percent of revenues to 12.1% in 1998, from 13.9% in
1997.
         Interest expense decreased by $342,000 in 1998 from 1997, as
substantially all interest costs were capitalized in connection with the
modernization and expansion project at the Texas facility.

         The Company's net income for 1998 decreased $167,000, or 5.4%, from
$3,096,000 ($0.79 per share basic and $0.78 diluted) in 1997, to $2,929,000
($0.74 basic and diluted). This decrease is attributable principally to the
favorable impact in 1997 of recognizing $2,300,000 ($0.59 basic and $0.58
diluted) in previously reserved deferred tax assets, which was partially offset
by a loss of $405,000, net of tax benefit ($0.10 basic and diluted), on the sale
of the Corson assets.

                                  1997 VS 1996

         Revenues decreased from $40,159,000 in 1996 to $32,404,000 in 1997, a
decrease of $7,755,000 or 19.3%. This decrease was a result of a 17.9% decrease
in sales volume, due to the sale of the Corson Lime Company assets in June 1997
as well as a reduction in sales at the Arkansas plant, and a 1.4% decrease in
sales prices. Excluding Corson, revenues decreased by $825,000, or 2.9%, from
1996, resulting from a 1.9% decrease in sales volume and 1.0% decrease in sales
prices. The decreased sales volume at Arkansas was partially due to the loss of
a large pulverized limestone customer in 1996, as well as the loss of certain
quicklime customers due to an inability to meet customer demand and increased
competition in the area.

         The Company's gross profit was $5,419,000 for 1997 compared to
$7,883,000 for 1996, a 31.3%, or $2,464,000 decrease. The decrease was the
result of a number of factors: The lower sales volume, particularly at Arkansas,
reduced the gross profit as fixed costs, including increased depreciation
expense, were absorbed by fewer units. The increased cost of fuel, particularly
natural gas prices, impacted all three plants. Corson's continued operating and
productivity problems up to the date of sale, as well as the $506,000 loss on
the sale of its assets, also contributed to the reduction in gross profit.

         SG&A expenses increased from $4,359,000 in 1996 to $4,520,000 in 1997,
a 3.7% increase. SG&A expenses increased as a percent of revenues to 13.9% in
1997, from 10.9% in 1996. While SG&A expenses were reduced as a result of the
sale of Corson's assets, SG&A was negatively impacted by a one-time severance
payment due to a former employee under an employment agreement and additional
professional consulting fees in 1997.

         Interest expense decreased by $195,000 in 1997 from 1996, due to lower
debt outstanding and the capitalization of $85,000 in 1997 interest costs
related to the modernization and expansion project at the Texas facility. Other,
net, increased by $243,000 in 1997 from 1996. This increase was primarily due to
increased interest income resulting from increased cash reserves, certain
royalty income on stone sales from the Blum facility, and the sale of certain
surplus Texas assets.

         Income tax expense (benefit) was impacted by the reduction in the
deferred tax asset valuation allowance which produced a corresponding income tax
benefit of $2,300,000 recorded in the second quarter of 1997. See Note 3 of
Notes to Consolidated Financial Statements.

         The Company's net income for 1997 increased $494,000, or 19.0%, from
$2,602,000 ($0.67 per share basic and $0.66 diluted) in 1996, to $3,096,000
($0.79 basic and $0.78 diluted). This increase is attributable principally to
the 1997 recognition of $2,300,000 ($0.59 basic and $0.58 diluted) in previously
reserved deferred tax assets, partially offset by a loss of $405,000, net of tax
benefit ($0.10 basic and diluted), on the sale of the Corson assets.



                                      -8-
<PAGE>   11


FINANCIAL CONDITION.

         LIQUIDITY AND CAPITAL RESOURCES. In 1998, cash flow from operations was
$5,434,000, a decrease of $1,830,000, or 25.2%, from 1997. The decrease was
primarily related to the completion and paydown of the contractual liabilities
associated with the Texas Lime plant modernization and expansion project.

         Capital expenditures for 1998 totaled $22,790,000, compared to
$11,872,000 in 1997. Of the 1998 expenditures, approximately $17,394,000 related
to the modernization and expansion project at the Texas facility, as compared to
$6,720,000 of the 1997 expenditures.

         The Company has completed the modernization and expansion project at
the Texas facility and has approved a similar project for the Arkansas facility.
Excluding expenditures for the Company's planned modernization and expansion
project at Arkansas Lime, the Company expects to spend approximately $2,000,000
to $3,000,000 per year over the next several years. These expenditures are
considered normal recurring maintenance and re-equipping projects at the plant
facilities to maintain or improve efficiency and reduce costs.

         The Texas project included the installation of a new stone crushing and
handling system, the addition of a preheater to one of the existing kilns,
additional storage, screening and shipping capacity, and a new support building
to house a laboratory and administrative and shop facilities. The Texas
improvements should allow the Company to better serve its customers and develop
new markets by improving both quality and service. The stone crushing system
will significantly reduce the amount of fines (undersized pebbles and dust)
generated by production, thereby increasing yields while providing a more
consistently sized stone for the kiln feed system which will increase production
yield and improve fuel efficiency. The new stone handling system will
significantly reduce trucking and labor costs in the quarry, as well as improve
the reliability of the feed systems to both the kilns and the pulverized
limestone plant. The additional storage will improve both kiln utilization and
the plant's ability to meet peak customer demand. The storage, screening, and
load-out facilities will also substantially reduce the amount of time required
for the loading of bulk quicklime trucks. The preheater addition to the existing
kiln, along with the improvement in the crushing system, will reduce fuel
consumption and will also increase the plant's quicklime capacity by
approximately 25%. These improvements will result in lower operating costs and
in a more efficient utilization of the work force. Through December 31, 1998,
the Texas modernization and expansion project cost an aggregate of approximately
$24,650,000. The Texas project was financed through a combination of internally
generated funds from operations, the proceeds from the sale of the Corson
assets, and the Company's banking facilities.

         As currently planned, the Arkansas modernization and expansion project
will be completed in two phases: Phase I will cover the redevelopment of the
quarry plant, rebuilding of the railroad, establishment of an out-of-state
terminal, and installation of a rotary kiln with a preheater, along with
increased product storage and loading capacity. Depending on such factors as
securing satisfactory permits and the availability of financing, Phase I is
scheduled to be completed mid-year 2000.

         Phase II of the Arkansas project would further expand the plant
capacity through the installation of a second kiln with additional storage
capacity. Although the Company could determine to defer Phase II depending upon
such factors as market demand and the availability of financing, it currently
plans to complete Phase II in the first half of 2001.

         The Arkansas improvements should allow the Company to better serve its
customers by improving both quality and service while increasing the production
capacity of quicklime and hydrated lime. With the improvements, the Company
expects to be in a better position to compete for customers who currently cannot
use the Company's lime in their processes due to insufficient production
capacity at the plant or quality constraints. The rotary kiln will have lower
operating costs and a greater capacity than the six shaft kilns currently in
use. In addition to increasing capacity, this kiln will also be able to
consistently produce




                                      -9-
<PAGE>   12

high-quality lime for use by certain manufacturing customers who currently do
not buy lime from the Arkansas facility. The storage, screening, and load-out
facilities will also substantially reduce the amount of time required for the
loading of bulk quicklime trucks and railcars. The planned modernization and
expansion project will increase both production and shipping capacity, will
lower operating costs, and will allow for a more efficient utilization of the
work force.

         Phase I of the Arkansas project is currently projected to cost
approximately $21,500,000. If Phase II proceeds on schedule, it is currently
estimated to cost approximately $11,000,000. The Company intends to finance the
Arkansas project through a combination of internally generated funds and further
bank borrowings. There can be no assurance that sufficient funds will be
available to the Company to complete the Arkansas project as currently
contemplated.

         The Company currently has a financing agreement with a commercial bank.
On August 31, 1998, the Company amended its amended and restated loan agreement,
which had been entered into in December 1997. The amendment to the agreement
provides for a total of $18,500,000, on the five-year secured term loan, which
matures in July 2003, and requires monthly principal repayments of $220,238
beginning on October 1, 1998. The amended agreement includes a separate secured
line of credit of $5,000,000 for capital expenditures related to the Arkansas
modernization and expansion project. This committed capital expenditure line of
credit requires interest-only payments until its maturity in July 2000. The
amended agreement provides for a $20,000,000 capital expenditure and acquisition
line of credit, which remains subject to approval by the bank and matures in
January 2000. The amended agreement also provides for a $4,000,000 revolving
credit facility, which is secured and matures in January 2000. All of the
facilities are secured by substantially all of the Company's assets and bear
interest at the bank's prime rate plus a defined interest rate spread based upon
the Company's then-current ratio of total funded debt to earnings before
interest, taxes, depreciation and amortization (EBITDA). However, at the option
of the Company, all or any portion of the amounts outstanding can be converted
into a LIBOR-based rate plus a defined interest rate spread based upon the
Company's then-current ratio of total funded debt to EBITDA. The term loan and
the committed capital expenditure line of credit bear interest at LIBOR plus
1.50%, and these rates increase to a maximum of LIBOR plus 2.75% if the
Company's current ratio of funded debt to EBITDA reaches a ratio of 4 to 1. The
revolving credit facility bears interest at LIBOR plus 1.40%, and its rate
increases similar to the other loans based on the leverage of the Company.

         The Company is not contractually committed to any planned capital
expenditures until actual orders are placed for equipment. At year end, the
Company had no liability for open equipment and construction orders. Future
billings related to the Arkansas modernization and expansion project will be
recorded as work is performed and billed to the Company.

         ENVIRONMENTAL MATTERS. The Company's operations are subject to various
environmental laws and regulations. In part in response to requirements of
environmental regulatory agencies, the Company incurred capital expenditures of
approximately $197,000 in 1998 and $117,000 in 1997. In the judgment of
management, forecastable environmental expenditure requirements for the future
are not of such dimension as to have a materially adverse effect on the
Company's financial condition, results of operations, liquidity or competitive
position. See "Business--Environmental Matters."

         YEAR 2000 COMPLIANCE. The Company is addressing the potential impact of
the Year 2000 ("Y2K") issue on its operations. The Y2K problem arises because of
computer programs which use two digits rather than four digits to define a year.
This may result in miscalculations or complete system failures in processing
data with programs using date sensitive information.

         The Company has inventoried its information technology ("IT") and
non-IT systems, including embedded systems in its production operating
equipment, in an effort to identify potential Y2K problems. The Company is in
the process of assessing and quantifying the extent of potential problems. After
prioritizing the problems uncovered, the Company will move to the remediation
and testing phases of its Y2K compliance program, which it expects to complete
by the third quarter of 1999.



                                      -10-
<PAGE>   13

         The Company currently uses certain customized accounting software which
is not Y2K compliant. To address this problem, the Company has selected a
commercially available accounting software which is currently scheduled to be
installed by the second quarter of 1999. The cost of this installation will be
approximately $200,000. In addition, the software used in the Company's
production operations has either already been warranted by the suppliers or
publishers to be Y2K compliant, or the suppliers and publishers have represented
that such software will be compliant through upgrades that the Company will
receive in 1999 under software maintenance agreements. The Company has not taken
any steps to independently verify the truth of such warranties and
representations, but has no reason to believe that the software is not, or will
not be, compliant. The Company does not currently believe that the amount of
non-compliant IT and non-IT equipment used in other systems will be found to be
significant, nor will the cost to modify or replace such equipment be material.

         The Company also intends to obtain confirmation from its suppliers and
customers that they are or will be Y2K compliant. The costs of seeking such
third-party confirmation are minimal. The Company believes that it will not be
practical to independently verify the responses received because it does not
believe that the Company would be given access to carry out such verification or
that the costs of doing so would be justifiable given the fact that no single
supplier or distributor is material to the Company and its operations. The cost
of replacing, or of implementing alternative means of communication with,
non-compliant or non-responsive suppliers will not be possible to determine
until the review process has been completed.

         Assuming that there are no serious systemic failures in external
services, such as power or telephone outages, banking disruptions, interruptions
of the U.S. mail or private delivery services, or air, rail, or trucking
transportation difficulties, the Company believes that its most reasonably
likely worst case scenario is that it will experience a number of minor system
malfunctions, errors, and delays during the early weeks of the Year 2000. Such
problems could include production disruptions and inefficiencies, difficulties
in processing orders and invoicing customers, and delays in ordering supplies
and paying suppliers. Although it is less likely, as a result of Y2K problems,
the Company could also experience delays and disruptions in completing the
planned Arkansas modernization and expansion project on time and at the costs
currently projected. Lastly, the Company could, depending upon the response to
Y2K problems by its customers and their industries, experience a decline in
customer demand and in the markets for its products.

         While the Company will not complete its contingency planning until
specific Y2K problems are fully identified, quantified, and prioritized, it has
begun to identify the types of actions and alternatives that it may have to
consider in order to ensure continuity of operations and service to customers.
These include making sure that manual override systems are fully functional,
reverting to paper processes to handle information storage, transmission, and
retrieval, stockpiling certain supplies and spare parts, and acquiring and
installing additional computer and mechanical components and systems. Each such
response could require additional manpower and supervision, may involve
increased costs to the Company, and could result in a decrease in revenues and
profits. As to the potential for a decline in customer demand, the Company
believes that, although it markets and sells its products on a regional basis,
its customer base is widely diversified among various industries, and among
various purchasers within a given industry, and the Company intends to continue
during 1999 to seek to strengthen and diversify further its customer base. Other
than as a result of serious systemic failures in external services, or due to a
significant and extended decline in customer demand as a result of an inadequate
response to the Y2K problem by the Company's customers and their industries, the
Company does not expect the Y2K challenge to have a material adverse effect on
its financial condition, results of operations, or cash flows.

         FORWARD-LOOKING STATEMENTS. Any statements contained in this Annual
Report that are not statements of historical fact are forward-looking statements
as defined in the Private Securities Litigation Reform Act of 1995.
Forward-looking statements in this Report, including without limitation,
statements relating to the Company's plans, strategies, objectives,
expectations, intentions, and adequacy of resources, are identified by such
words as "will," "could," "should," "believe," "expect," "intend," "plan,"
"schedule," "estimate," and "project." The Company undertakes no obligation to
publicly update or revise any forward-




                                      -11-
<PAGE>   14

looking statements. Investors are cautioned that forward-looking statements
involve risks and uncertainties that could cause actual results to differ
materially from expectations, including without limitation the following: (i)
the Company's plans, strategies, objectives, expectations, and intentions are
subject to change at any time at the discretion of the Company; (ii) the
Company's plans and results of operations will be affected by the Company's
ability to manage its growth and modernization; and (iii) other risks and
uncertainties set forth below or indicated from time to time in the Company's
filings with the Securities and Exchange Commission.

RISK FACTORS.

         ADVERSE EFFECTS OF LEVERAGE AND RESTRICTIONS IMPOSED BY TERMS OF THE
COMPANY'S INDEBTEDNESS. Following the closing of any further debt financing
required to complete the planned Arkansas modernization and expansion project,
the Company may be significantly more leveraged than it has been in the recent
past, and a substantial portion of its cash flows from operations will be
dedicated to the payment of principal and interest on indebtedness. As of
December 31, 1998, with the borrowings that the Company incurred in connection
with the modernization and expansion of its Texas plant, the Company's total
consolidated indebtedness and total stockholders' equity were $18.8 million and
$26.7 million, respectively, and total indebtedness represented 41.3% of total
capitalization. The ability of the Company to service its debt and to comply
with the financial and restrictive covenants contained in its loan agreements
will depend upon its future performance and business growth which, in turn, are
subject to financial, economic, competitive, and other factors, many of which
are beyond the Company's control. In particular, the Company's ability to
service its indebtedness will depend upon its ability to generate higher levels
of revenues and cash flows through the modernization and expansion of the Texas
and Arkansas plants. While the Company believes that it will be able to generate
sufficient cash flow to cover required debt service payments, no assurance can
be given to that effect.

         INABILITY TO OBTAIN PERMITTING FOR THE ARKANSAS PLANT. The permitting
process for lime manufacturing facilities is costly as well as time consuming.
All lime manufacturing facilities which are to be modernized or expanded must
complete several permitting steps: First, if additional real estate is to be
acquired in conjunction with the modernization or expansion project, the real
estate may have to be zoned accordingly. Secondly, the facility will need to
obtain a Prevention of Significant Deterioration ("PSD") permit. This permit
covers air emissions generated at the facility and must be filed with the
Arkansas Department of Pollution Control and Ecology for initial screening.
Third, once the state has determined that the project warrants further review,
the application is then reviewed by the U.S. Environmental Protection Agency.
There can be no assurance that the Company will obtain a PSD permit, or that the
permit will contain emission limits and performance criteria that the proposed
plant can meet. The Company could be forced to abandon its Arkansas
redevelopment plans unless an acceptable permit is obtained.

         INABILITY TO COMPLETE THE ARKANSAS PROJECT. Construction of the
Arkansas project may be significantly delayed or may not be completed at all as
a result of problems frequently associated with construction projects, including
delays in construction, cost overruns, labor problems, and the inability to
obtain required governmental approvals, licenses, and permits or the funds
required to complete the project. The construction of the Arkansas project could
also have a material adverse effect on the Company due to the impact of start-up
costs and the potential for under-utilization, especially in the start-up phase.
No assurance can be given that operation of the Arkansas project will be
implemented, that the Company will be able to sell its products once increased
production has commenced, or that any such sales will be profitable. The Company
may be required to obtain additional financing should the actual costs of the
Arkansas project exceed the Company's then-available funds. In such event, the
Company may decide to incur additional indebtedness to pay for construction or
other expansion costs, which, if available, could have a further material
adverse effect on the Company.

         INABILITY TO REDEVELOP THE ARKANSAS LIME MARKET. Over the past decade,
Arkansas Lime Company has lost various accounts due to poor product quality and
service. While product quality and




                                      -12-
<PAGE>   15

service should improve at Arkansas Lime after completion of the modernization
and expansion project, there is no assurance that the Company will be able to
reestablish accounts with several customers that previously purchased products
from Arkansas Lime.

         COMPETITION. The lime industry is highly regionalized and competitive.
The Company's competitors include both public and private companies. The primary
competitive factors in the lime industry are quality, price, proximity to the
customer, personal relationships, and timeliness of deliveries, with varying
emphasis on these factors depending upon the specific product application. To
the extent that one or more of the Company's competitors becomes more successful
with respect to any key competitive factor, the Company's business could be
materially adversely affected. Although demand for lime has been relatively
strong in recent years, the Company is unable to predict future demand and
prices, and there can be no assurance that current levels of demand and pricing
will continue or that any future price increases can be sustained. Additionally,
other lime producers may have a competitive advantage over the Company in
markets outside of the Company's primary markets because of the strategic
location of their plants as well as other cost efficiencies, such as the ability
to spread fixed costs over several plants.

         INDUSTRY CONSOLIDATION. There is a continuing trend of consolidation in
the lime and limestone industry. Currently, the three largest lime companies in
North America operate 42 plants and 5 remote hydrating plants, accounting for
approximately 67% of total lime production. In addition to, and often in
conjunction with, consolidations, many producers have undergone modernization
and expansion projects to upgrade their processing equipment in an effort to
improve their operating efficiency and competitive position. As industry
consolidation continues, the Company will continue to evaluate external
opportunities for expansion, as well as pursuing its own modernization and
expansion project at its Arkansas plant, in an effort to remain competitive,
protect its markets, and position itself for the future. There can be no
assurance that the Company will have sufficient financial and management
resources to implement this strategy, or to pursue successfully acquisition
opportunities should they arise, while the Company is engaged in the Arkansas
project. Therefore, the Company may be required to revise its strategy, or
otherwise find ways to enhance the value of the Company, including by entering
into strategic partnerships, mergers, or other transactions.

         DEPENDENCE ON KEY MANAGEMENT PERSONNEL. The Company's success depends
in large part upon the continued service of Herbert G.A. Wilson, President,
Chief Executive Officer, and a Director; Bill R. Hughes, Senior Vice President -
Sales and Marketing; Johnney G. Bowers, Vice President - Manufacturing; and
Richard D. Murray, Vice President - Engineering. The loss of the services of one
or all of these individuals or other key personnel could have a material adverse
effect on the Company. There can be no assurance that the Company's existing
management team will be able to manage the growth and modernization, or that the
Company will be able to attract and retain additional qualified personnel as
needed in the future.



                                      -13-
<PAGE>   16

ITEM 7A.          QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

                                      NONE

ITEM 8.           FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.

<TABLE>


<S>                                                                                         <C>
         INDEX TO CONSOLIDATED FINANCIAL STATEMENTS.

         Report of Independent Auditors                                                     F1

         Consolidated Financial Statements:
                Consolidated Balance Sheets as of December 31, 1998 and 1997                F2

                Consolidated Statements of Income for the Years Ended
                    December 31, 1998, 1997 and 1996                                        F4

                Consolidated Statements of Stockholders' Equity for
                    the Years Ended December 31, 1998, 1997 and 1996                        F5

                Consolidated Statements of Cash Flows for the Years
                    Ended December 31, 1998, 1997 and 1996                                  F6

                Notes to Consolidated Financial Statements                                  F7
</TABLE>







                                      -14-
<PAGE>   17



                         REPORT OF INDEPENDENT AUDITORS






The Board of Directors and Stockholders
United States Lime & Minerals, Inc.




We have audited the consolidated balance sheets of United States Lime &
Minerals, Inc. and subsidiaries as of December 31, 1998 and 1997, and the
related consolidated statements of income, stockholders' equity, and cash flows
for each of the three years in the period ended December 31, 1998. These
financial statements are the responsibility of the Company's management. Our
responsibility is to express an opinion on these consolidated financial
statements based on our audits.

We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe our audits provide a reasonable basis for our opinion.

In our opinion, the consolidated financial statements referred to above present
fairly, in all material respects, the consolidated financial position of United
States Lime & Minerals, Inc. and subsidiaries as of December 31, 1998 and 1997,
and the consolidated results of their operations and their cash flows for each
of the three years in the period ended December 31, 1998, in conformity with
generally accepted accounting principles.



                                                      ERNST & YOUNG LLP



Dallas, Texas
January 19, 1999




                                      -F1-
<PAGE>   18
              UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES

                           CONSOLIDATED BALANCE SHEETS
                             (dollars in thousands)


<TABLE>
<CAPTION>
                                                                           December 31,              
                                                                    -------------------------  
                            ASSETS                       Notes           1998        1997   
                                                      -----------   ------------  -----------
<S>                                                   <C>           <C>           <C>  
     Current assets:
         Cash and cash equivalents                                  $        688        2,787
         Trade receivables, net                            1               3,360        3,624
         Inventories                                       1               3,154        3,001
         Prepaid expenses and other assets                                   139          111 
                                                                    ------------   ----------
              Total current assets                                         7,341        9,523



     Property, plant and equipment, at cost:               1
         Land                                                              2,991        2,764
         Building and building improvements                                1,820          736
         Machinery and equipment                                          67,151       47,631
         Furniture and fixtures                                              631          556
         Automotive equipment                                                635          615 
                                                                    ------------   ----------
                                                                          73,228       52,302
         Less accumulated depreciation                                   (32,152)     (30,896)
                                                                    ------------   ----------
              Property, plant and equipment, net                          41,076       21,406

     Deferred tax assets, net                              3               2,465        2,537
     Other assets, net                                     1                 208           54 
                                                                    ------------   ----------

              TOTAL ASSETS                                          $     51,090       33,520 
                                                                    ============   ==========

</TABLE>

           See accompanying notes to consolidated financial statements


                                      -F2-
<PAGE>   19
              UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES

                     CONSOLIDATED BALANCE SHEETS (CONTINUED)
                             (dollars in thousands)



<TABLE>
<CAPTION>

                                                                                             December 31,              
                        LIABILITIES AND                                       ---------------------------------------
                     STOCKHOLDERS' EQUITY                       Notes              1998                      1997   
                                                             -----------      -------------             -------------
<S>                                                          <C>              <C>                       <C>  
     Current liabilities:
         Current installments of long-term debt                   2           $      2,643                      1,071
         Accounts payable - trade                                                    3,668                      4,437
         Accrued expenses:
              Salaries and wages                                                       113                        447
              Insurance costs                                                          289                        461
              Other expenses                                                         1,264                        686 
                                                                              ------------                 ----------
                  Total current liabilities                                          7,977                      7,102
     Long-term debt, excluding current installments               2                 16,196                      2,167
     Other liabilities                                                                 253                        101 
                                                                              ------------                 ----------
              TOTAL LIABILITIES                                                     24,426                      9,370

     Commitments and contingencies                                6                  -                           -


     Stockholders' equity:                                      2,4,5
         Preferred stock, $5 par value;
              authorized 500,000 shares; none issued                                 -                           -
         Common stock, $0.10 par value; authorized
              15,000,000 shares; issued 5,294,065 shares                               529                        529
         Additional paid-in capital                                                 14,866                     15,135
         Retained earnings                                                          25,243                     22,729
         Less treasury stock at cost; 1,316,876 shares
              and 1,342,212 shares of common stock                                 (13,974)                   (14,243)
                                                                              ------------                 ----------
                  Total stockholders' equity                                        26,664                     24,150 
                                                                              ------------                 ----------
              TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY                      $     51,090                     33,520 
                                                                              ============                 ==========
</TABLE>





           See accompanying notes to consolidated financial statements




                                      -F3-
<PAGE>   20
              UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES

                        CONSOLIDATED STATEMENTS OF INCOME
                (dollars in thousands, except per share amounts)


<TABLE>
<CAPTION>
                                                                                    Years Ended December 31,              
                                                                       ----------------------------------------------------
                                                         Notes             1998                1997               1996   
                                                      -----------      -------------      --------------      -------------
<S>                                                   <C>              <C>                <C>                 <C>   
     Revenues                                                          $    28,769              32,404             40,159
     Cost of revenues:
         Labor and other operating expenses                                 18,920              23,548             28,684
         Depreciation, depletion and amortization                            2,788               3,437              3,592 
                                                                       -----------            --------          ---------
                                                                            21,708              26,985             32,276 
                                                                       -----------            --------          ---------
              GROSS PROFIT                                                   7,061               5,419              7,883

     Selling, general and administrative expenses                            3,489               4,520              4,359 
                                                                       -----------            --------          ---------
              OPERATING PROFIT                                               3,572                 899              3,524

     Other deductions (income):
         Interest expense                                  2                    26                 368                563
         Loss (gain) on sale of assets, net                                    124                  14                (21)
         Other, net                                                           (432)               (477)              (234)
                                                                       -----------            --------          ---------
                                                                              (282)                (95)               308 
                                                                       -----------            --------          ---------
              INCOME BEFORE TAXES                                            3,854                 994              3,216
     Income tax expense (benefit), net                     3                   925              (2,102)               614 
                                                                       -----------            --------          ---------
              NET INCOME                                               $     2,929               3,096              2,602 
                                                                       ===========            ========          =========

     INCOME PER SHARE OF COMMON STOCK:                    1,8

         Basic earnings per common share                               $      0.74                0.79               0.67
                                                                       ===========            ========          =========
         Diluted earnings per common share                             $      0.74                0.78               0.66
                                                                       ===========            ========          =========
</TABLE>







           See accompanying notes to consolidated financial statements




                                      -F4-
<PAGE>   21
              UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES

                 CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
                             (dollars in thousands)



                  Years Ended December 31, 1998, 1997 and 1996


<TABLE>
<CAPTION>
                                              Common Stock
                                       ------------------------        Additional
                                          Shares                        Paid-In       Retained        Treasury
                                       Outstanding      Amount          Capital       Earnings         Stock         Total  
                                       ------------  ----------       ----------    -----------     -----------    ---------  
<S>                                     <C>          <C>              <C>           <C>             <C>             <C>   
BALANCES AT DECEMBER 31, 1995           3,836,063    $      529        15,848         17,844        (15,472)        18,749

     Stock options exercised               85,790          --            (537)          --              910            373

     Common stock dividends                  --            --            --             (389)          --             (389)

     Adjustments to reflect minimum
         pension liability                   --            --            --             (169)          --             (169)

     Net income                              --            --            --            2,602           --            2,602
                                        ---------    ----------       -------       --------        -------      ---------

BALANCES AT DECEMBER 31, 1996           3,921,853    $      529        15,311         19,888        (14,562)        21,166

     Stock options exercised               30,000          --            (176)          --              319            143

     Common stock dividends                  --            --            --             (394)          --             (394)

     Adjustments to reflect minimum
         pension liability                   --            --            --              139           --              139

     Net income                              --            --            --            3,096           --            3,096
                                        ---------    ----------       -------       --------        -------      ---------

BALANCES AT DECEMBER 31, 1997           3,951,853    $      529        15,135         22,729        (14,243)        24,150

     Stock options exercised               25,336          --            (269)          --              269           --

     Common stock dividends                  --            --            --             (396)          --             (396)

     Adjustments to reflect minimum
         pension liability                   --            --            --              (19)          --              (19)

     Net income                              --            --            --            2,929           --            2,929
                                        ---------    ----------       -------       --------        -------      ---------

BALANCES AT DECEMBER 31, 1998           3,977,189    $      529        14,866         25,243        (13,974)        26,664
                                        =========    ==========     =========      =========      =========      =========
</TABLE>




           See accompanying notes to consolidated financial statements




                                      -F5-
<PAGE>   22
              UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES

                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                             (dollars in thousands)



<TABLE>
<CAPTION>
                                                                   Years Ended December 31,              
                                                            -------------------------------------- 
                                                               1998           1997          1996   
                                                            ---------      ----------    ---------
<S>                                                         <C>            <C>           <C>  
OPERATING ACTIVITIES:
  Net income                                                $  2,929         3,096         2,602

  Adjustments to reconcile net income
  to net cash provided by operations:
         Depreciation, depletion and amortization              2,925         3,503         3,757
         Amortization of financing costs                        --              50           101
         Deferred income taxes (benefit)                          72        (2,537)         --
         Loss (gain) on sale of assets                           124            14           (21)
         Loss on sale of Corson Lime Company assets             --             506          --

         Changes in assets and liabilities:
             (Increase) / decrease in trade receivables          264         1,528           357
             (Increase) / decrease in inventories               (153)          332           278
             (Increase) / decrease in prepaid expenses           (28)          (19)         (200)
             (Increase) / decrease in other assets              (154)          292            93
             Increase / (decrease) in accounts payable
                 and accrued expenses                           (697)          973           121
             Increase / (decrease) in other liabilities          152          (474)          (38)
                                                            --------      --------      --------

  Total adjustments                                            2,505         4,168         4,448
                                                            --------      --------      --------

    Net cash provided by operations                         $  5,434         7,264         7,050

INVESTING ACTIVITIES:
  Purchase of property, plant and equipment                 $(22,790)      (11,872)       (6,121)
  Proceeds from sale of Corson Lime Company
    assets, net of expenses                                     --           7,745          --
  Proceeds from sales of property, plant and equipment            71            44            69
                                                            --------      --------      --------

    Net cash used in investing activities                   $(22,719)       (4,083)       (6,052)

FINANCING ACTIVITIES:
  Proceeds from exercise of stock options                   $   --             143           373
  Payment of common stock dividends                             (396)         (394)         (389)
  Proceeds from borrowings                                    16,357         2,900           800
  Repayments of debt                                            (756)       (4,043)       (1,943)
  Repayment of pension fund liability                            (19)         --            --   
                                                            --------      --------      --------

    Net cash provided by (used in) financing activities     $ 15,186        (1,394)       (1,159)
                                                            --------      --------      --------

    Net increase (decrease) in cash and
         cash equivalents                                     (2,099)        1,787          (161)
  Cash and cash equivalents at beginning of period             2,787         1,000         1,161
                                                            --------      --------      --------


  Cash and cash equivalents at end of period                $    688         2,787         1,000
                                                            ========      ========      ========
</TABLE>




           See accompanying notes to consolidated financial statements




                                      -F6-
<PAGE>   23




              UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                (dollars in thousands, except per share amounts)


                  Years Ended December 31, 1998, 1997 and 1996




(1)      Summary of Significant Accounting Policies

         (a)      Organization

                  The Company is a manufacturer of lime and limestone products
                  supplying primarily the steel, paper, agriculture, municipal
                  sanitation and water treatment, and construction industries.
                  The Company is headquartered in Dallas, Texas and operates
                  lime and limestone plants in Arkansas and Texas through its
                  wholly owned subsidiaries, Arkansas Lime Company and Texas
                  Lime Company, respectively. Through June 21, 1997, the Company
                  also operated in Pennsylvania through a wholly owned
                  subsidiary, Corson Lime Company (see Note 7 of Notes to
                  Consolidated Financial Statements).

         (b)      Principles of Consolidation

                  The consolidated financial statements include the accounts of
                  the Company and its subsidiaries. All material intercompany
                  balances and transactions have been eliminated.

         (c)      Use of Estimates

                  The preparation of the financial statements in conformity with
                  generally accepted accounting principles requires management
                  to make estimates and assumptions that affect the amounts
                  reported in the financial statements and accompanying notes.
                  Actual results could differ from those estimates.

         (d)      Statements of Cash Flows

                  For purposes of reporting cash flows, the Company considers
                  all certificates of deposit and highly-liquid debt
                  instruments, such as U.S. treasury bills and notes, with
                  original maturities of three months or less to be cash
                  equivalents. Cash equivalents are carried at cost plus accrued
                  interest, which approximates fair market value.

                  Supplemental cash flow information is presented below:


<TABLE>
<CAPTION>
                                                                                  1998         1997       1996 
                                                                                --------      ------     ------
<S>                                                                             <C>           <C>        <C>
                      Cash paid during the period for:
                           Interest (net of amounts capitalized)                $    900        321        450
                                                                                 =======      =====      =====
                           Income taxes                                         $    439        654        902
                                                                                 =======      =====      =====
</TABLE>


         (e)      Trade Receivables

                  Trade receivables are presented net of the related allowance
                  for doubtful accounts, which totaled $52 and $80 at December
                  31, 1998 and 1997, respectively.



                                      -F7-
<PAGE>   24
              UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                (dollars in thousands, except per share amounts)



         (f)      Inventories

                  Inventories are valued principally at the lower of cost or
                  market determined using the average cost method. Such costs
                  include materials, labor, and production overhead.

                  A summary of inventories is as follows:

<TABLE>
<CAPTION>
                                                                                  December 31,           
                                                                           ------------------------
                                                                              1998           1997    
                                                                           ---------       --------
<S>                                                                        <C>             <C>
                           Lime and limestone inventories:
                               Raw materials                               $     927            624
                               Finished goods                                    671            844 
                                                                           ---------       --------
                                                                               1,598          1,468
                           Service parts inventories                           1,556          1,533 
                                                                           ---------       --------
                                                                           $   3,154          3,001 
                                                                           =========       ========
</TABLE>


         (g)      Property, Plant, and Equipment

                  For constructed assets, the capitalized cost includes the cash
                  price paid by the Company for labor and materials plus
                  interest and project management costs that are directly
                  related to the constructed assets. Total interest costs of
                  $962 and $85 were capitalized for the years ended December 31,
                  1998 and 1997. No interest was capitalized in 1996.
                  Depreciation of property, plant, and equipment is being
                  provided for by the straight-line and declining-balance
                  methods over estimated useful lives as follows:


<TABLE>

<S>                                                                               <C>     
                               Buildings and building improvements                3 - 40 years
                               Machinery and equipment                            3 - 20 years
                               Furniture and fixtures                             3 - 10 years
                               Automotive equipment                               3 -  8 years
</TABLE>

                  Maintenance and repairs are charged to expense as incurred;
                  renewals and betterments are capitalized. When units of
                  property are retired or otherwise disposed of, their cost and
                  related accumulated depreciation are removed from the
                  accounts, and any resulting gain or loss is credited or
                  charged to income.

                  The Company reviews its long-term assets for impairment in
                  accordance with the guidelines of Statement of Financial
                  Accounting Standards No. 121, "Accounting for the Impairment
                  of Long-Lived Assets and for Long-Lived Assets to be Disposed
                  of" ("SFAS 121"). SFAS 121 requires that, when changes in
                  circumstances indicate that the carrying amount of an asset
                  may not be recoverable, the Company should determine if
                  impairment of value exists. Impairment is measured as the
                  amount by which the carrying amount of the asset exceeds the
                  expected future undiscounted cash flows from the use and
                  eventual disposal of the assets under review. Any write-downs
                  are treated as a permanent reduction in the carrying value of
                  the assets.




                                      -F8-
<PAGE>   25

              UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                (dollars in thousands, except per share amounts)


         (h)      Other Assets

                  Other assets consist of the following:

<TABLE>
<CAPTION>
                                                                         December 31,           
                                                                   ---------------------   
                                                                      1998        1997    
                                                                   ---------    --------
<S>                                                                <C>          <C>       
                               Deferred stripping costs            $      56          -
                               Deferred financing costs                  152          54 
                                                                   ---------    --------
                                                                   $     208          54 
                                                                   =========    ========
</TABLE>

                  Deferred stripping costs related to Arkansas Lime Company will
                  be amortized by the straight line method over 12 months in
                  1999. Deferred financing costs are expensed over the shorter
                  of the life of the debt or expected life of the loan using the
                  straight-line method.


         (i)      Environmental Expenditures

                  Environmental expenditures that relate to current operations
                  are expensed or capitalized as appropriate. Expenditures that
                  relate to an existing condition caused by past operations, and
                  which do not contribute to current or future revenue
                  generation, are expensed. Liabilities are recorded when
                  environmental assessments and/or remedial efforts are
                  probable, and the costs can be reasonably estimated.
                  Generally, the timing of these accruals will coincide with
                  completion of a feasibility study or the Company's commitment
                  to a formal plan of action.


         (j)      Stock Options

                  The Company has elected to follow Accounting Principles Board
                  Opinion No. 25, "Accounting for Stock Issued to Employees"
                  ("APB 25"), in accounting for its employee stock options.
                  Under APB 25, if the exercise price of an employee's stock
                  options equals or exceeds the market price of the underlying
                  stock on the date of grant, no compensation expense is
                  recognized. The Company adopted Statement of Financial
                  Accounting Standards No. 123, "Accounting for Stock-Based
                  Compensation" ("SFAS 123"), in 1996. SFAS 123 requires
                  companies that elect to continue applying the provisions of
                  APB 25 to provide pro forma disclosures for employee stock
                  compensation awards as if the fair-value-based method defined
                  in SFAS 123 had been applied. See Note 5 of Notes to
                  Consolidated Financial Statements.


         (k)      Earnings Per Share of Common Stock

                  Effective December 31, 1997, Statement of Financial Accounting
                  Standards No. 128, "Earnings per Share" ("SFAS 128"), was
                  implemented by the Company. SFAS 128 requires the presentation
                  of basic and diluted earnings per share for all periods
                  presented. As such, earnings per share for prior years have
                  been restated and are presented in accordance with the
                  guidelines of SFAS 128. See Note 8 of Notes to Consolidated
                  Financial Statements.






                                      -F9-
<PAGE>   26

              UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                (dollars in thousands, except per share amounts)


(2)      Long-Term Debt

                  The Company has a financing agreement with a commercial bank.
On August 31, 1998, the Company amended its amended and restated loan agreement,
which had been entered into in December 1997. The amendment to the agreement
provides for a total of $18,500,000, on the five-year secured term loan, which
matures in July 2003, and requires monthly principal repayments of $220,238
beginning on October 1, 1998. The amended agreement includes a separate secured
line of credit of $5,000,000 for capital expenditures related to the Arkansas
modernization and expansion project. This committed capital expenditure line of
credit requires interest-only payments until its maturity in July 2000. The
amended agreement provides for a $20,000,000 capital expenditure and acquisition
line of credit, which matures in January 2000. The $4,000,000 revolving credit
facility is secured and its maturity is January 2000. All three of the
facilities are secured by substantially all of the Company's assets and bear
interest at the bank's prime rate plus a defined interest rate spread based upon
the Company's then-current ratio of total funded debt to earnings before
interest, taxes, depreciation and amortization (EBITDA). However, at the option
of the Company, all or any portion of the amounts outstanding can be converted
into a LIBOR-based rate plus a defined interest rate spread based upon the
Company's then-current ratio of total funded debt to EBITDA. The term loan and
the committed capital expenditure line of credit bear interest at LIBOR plus
1.50%, and these rates increase to a maximum of LIBOR plus 2.75% if the
Company's current ratio of funded debt to EBITDA reaches a ratio of 4 to 1. The
revolving credit facility bears interest at LIBOR plus 1.40%, and its rate
increases similar to the other loans based on the leverage of the Company.

         In April 1998, the Company entered into an interest rate protection
agreement with its bank (the "Swap Agreement") to modify the interest
characteristics of $9,000,000 of its then-outstanding term debt from a variable
rate to a fixed rate. The Swap Agreement involves the exchange of interest
obligations based on a fixed rate of 7.45%, for interest obligations based on
variable 30-day LIBOR rates plus 1.65%, over the five-year life of the Swap
Agreement without an exchange of notional amounts upon which such interest
obligations are based. The interest rate differential to be paid or received as
rates change will be accrued and recognized as an adjustment to interest
expense. The related amount payable to, or receivable from, the bank will be
included as an adjustment to accrued expenses. To the extent amounts are not
material, the fair value of the Swap Agreement and changes in the fair value as
a result of changes in market interest rates will not be recognized in the
financial statements.

         In the event of the early termination of the term debt obligations, or
an early termination of the Swap Agreement, any realized gain or loss from the
Swap Agreement would be recognized as an adjustment to interest expense.

         For amounts not otherwise fixed under the Swap Agreement, the Company
has elected the LIBOR-based interest option for the debt outstanding under the
term loan.

         A summary of long-term debt is as follows:

<TABLE>
<CAPTION>
                                                       December 31,           
                                                   -------------------
                                                     1998        1997    
                                                   -------     -------
<S>                                                <C>         <C>  
Term loan                                          $17,839       3,238
Revolving credit facility                            1,000        --   
                                                   -------     -------
   Subtotal                                         18,839       3,238

Less current installments                            2,643       1,071
                                                   -------     -------

Long-term debt, excluding current installments     $16,196       2,167
                                                   =======     =======
</TABLE>




                                     -F10-
<PAGE>   27

              UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                (dollars in thousands, except per share amounts)

         Amounts payable on the long-term debt outstanding as of December 31,
1998 to be paid in 1999 and thereafter are: 1999, $2,643; 2000, $2,643; 2001,
$2,643; 2002, $2,643; 2003 and thereafter, $5,624.

         The carrying amount of the Company's long-term debt approximates its
fair value.

(3)      Income Taxes

         Income tax expense (benefit) for the years ended December 31, 1998,
1997 and 1996 was as follows:

<TABLE>
<CAPTION>
                                        1998        1997       1996   
                                       ------     -------     ------
<S>                                    <C>        <C>         <C>
Current income tax expense             $  853        435         614
Deferred income tax expense                72       (237)       --   
                                       ------     ------      ------
Income tax expense                        925        198         614

Recognition of previously reserved
    deferred tax assets                  --       (2,300)       --   
                                       ------     ------      ------

Income tax expense (benefit), net      $  925     (2,102)        614
                                       ======     ======      ======
</TABLE>


         A reconciliation of income taxes computed at the federal statutory rate
         to income tax expense (benefit) for the years ended December 31, 1998,
         1997 and 1996 is as follows:

<TABLE>
<CAPTION>

                                              1998                    1997                     1996          
                                       ---------------------    --------------------    ---------------------
                                                   Percent                 Percent                   Percent
                                                  of pretax               of pretax                 of pretax
                                        Amount     income        Amount    income        Amount      income     
                                       --------   ----------    --------  ----------    ---------  ----------  
<S>                                    <C>        <C>            <C>      <C>           <C>        <C>   
         Income taxes computed at
  the federal statutory rate           $ 1,310      34.0 %         338      34.0 %        1,093      34.0 %
Increase (reductions) in
  taxes resulting from:
      Recognition of previously
        reserved deferred
        tax assets                        --          --        (2,300)      (231.4)       --        --
      General business credit
        carryforwards                     --          --          --         --            (162)     (5.0)
      Statutory depletion in
        excess of cost depletion          (439)      (11.0)       (431)       (43.4)       (415)     (12.9)
      State income taxes, net of
        federal income tax benefit          39         1.0         191         19.2         131       4.0
      Other                                 15        --           100         10.1         (33)     (1.0)
                                       -------      ------     -------      -----       -------      ----
Income tax expense
   (benefit), net                      $   925      24.0 %      (2,102)      (211.5)%       614      19.1 %
                                       =======      ======     =======      =====       =======      ====
</TABLE>


         As reported in the Company's consolidated financial statements and
         notes contained in its Form 10-K for the year ended December 31, 1996,
         the Company had deferred tax assets which were previously fully
         reserved by a valuation allowance in accordance with Statement of
         Financial Accounting Standards No. 109, "Accounting for Income Taxes"
         ("SFAS 109"). The unrecognized deferred tax 




                                     -F11-
<PAGE>   28
              UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                (dollars in thousands, except per share amounts)


         assets related primarily to net operating loss carryforwards, general
         business credit carryforwards, and alternative minimum tax credit
         carryforwards.

         Generally, the provisions of SFAS 109 require deferred tax assets to be
         reduced by a valuation allowance if, based on the weight of available
         evidence, it is "more likely" than not that some portion or all of the
         deferred tax assets will not be realized. SFAS 109 requires an
         assessment of all available evidence, both positive and negative, to
         determine the amount of any required valuation allowance. No benefit
         was given to the deferred tax assets at December 31, 1996 due to
         uncertainties related to their utilization. As a result of the sale of
         the Corson assets (see Note 7 of Notes to Consolidated Financial
         Statements), the Company reviewed the deferred tax assets and concluded
         that the uncertainties as to their realization had been favorably
         resolved, in that the net operating loss carryforwards and the general
         business credit carryforwards are expected to be fully utilized. The
         Company's future taxable income, enhanced by the sale of the Corson
         assets, indicates future utilization of the alternative minimum tax
         credit carryforwards in the future. The post-Corson sale assessment as
         to the ultimate realization of the deferred tax assets indicates that
         it is more likely than not that the deferred tax assets will be
         realized. As a result, the Company reduced the deferred tax assets'
         valuation allowance in the second quarter of 1997 by $2,300, recording
         the deferred tax assets and recognizing that amount in federal and
         state income tax expense (benefit), net. At December 31, 1998, the
         Company had deferred tax liabilities of $637 and deferred tax assets of
         $3,102. The principal temporary difference related to the deferred tax
         liabilities was depreciation ($402). The principal temporary difference
         related to the deferred tax assets was the alternative minimum tax
         credit carryforwards ($2,854). At December 31, 1997, the Company had
         deferred tax liabilities of $629, deferred tax assets of $3,166. The
         principal temporary difference related to the deferred tax liabilities
         was depreciation ($344). The principal temporary differences related to
         the deferred tax assets were the tax benefit of NOL carryforwards
         ($279) and alternative minimum tax credit carryforwards ($2,777).

(4)      Employee Retirement Plans

         The Company had a noncontributory defined benefit pension plan that
         covered substantially all union employees previously employed by its
         wholly-owned subsidiary, Corson. Benefits for the Corson Lime Union
         Pension Plan (the "Corson Plan") were based on certain multiples of
         years of service. In June 1997, the Company sold substantially all of
         the assets of Corson to an unrelated third party. In connection with
         the sale of the assets, the Board of Directors resolved that all active
         participants in the Corson Plan as of July 31, 1997 would be fully
         vested and that no employee would be admitted to the Corson Plan after
         July 31, 1997. The Board of Directors further resolved that all benefit
         accruals under the Corson Plan would cease as of July 31, 1997. There
         was no material impact on the net assets of the Corson Plan as of
         December 31, 1997 as a result of the freezing of the Plan. 

         In conjunction with the freezing of the Corson Plan, the Company
         determined that it was in its best interest to fully fund the Corson
         Plan so as to minimize any future impact on the Company's results of
         operations. The 1997 contribution of $607 was intended to provide for
         all benefits earned for the participants' vested benefits under the
         Corson Plan. In 1998, the Company made a final payment of




                                     -F12-
<PAGE>   29
              UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                (dollars in thousands, except per share amounts)

         $19 to fully fund the Plan. The Company funded pension costs of $19 for
         1998, $607 for 1997 and $162 for 1996.

         The Company also has a contributory retirement (401(k)) savings plan
         for nonunion employees. The Company contributions to the plan were $50
         during 1998, $46 during 1997 and $61 during 1996. The Company has a
         contributory retirement (401(k)) savings plan for union employees of
         Texas Lime Company. The Company contributions to this plan were $20 in
         1998, $13 in 1997 and $14 in 1996.

         In December 1986, the Company purchased 1,550,000 shares of its
         outstanding common stock, accounted for as treasury stock in the
         consolidated balance sheets, for $10.50 per share. Subsequent to that
         purchase, 300,000 shares, after stock split, were sold to the Employee
         Stock Ownership Plan ("ESOP") for $8.20 per share. The ESOP covers
         substantially all full-time nonunion employees and is designed to
         invest primarily in the Company's common stock. Contributions to the
         ESOP are currently made at the option of the Company. The Company did
         not make a contribution during 1998, 1997 or 1996.

(5)      Stock Option Plan

         The Company has a stock option plan under which options for shares of
         common stock may be granted to key employees. The options expire ten
         years from the date of grant and generally become exercisable after the
         expiration of one year from the grant date. As of December 31, 1998,
         11,000 shares were available for future grant under this plan. 

         A summary of the Company's stock option activity and related
         information for the years ended December 31, 1998, 1997 and 1996 is as
         follows:

<TABLE>
<CAPTION>
                                                 1998                     1997                    1996          
                                          ---------------------   ---------------------    ---------------------
                                                       Weighted               Weighted                  Weighted
                                                        Average                Average                  Average
                                                       Exercise               Exercise                  Exercise
                                          Options        Price      Options     Price      Options       Price
                                          --------    ---------   ----------    ------     ---------   ---------
<S>                                       <C>          <C>         <C>          <C>         <C>          <C>  
Outstanding at beginning of year           187,210      $6.90       252,210      $6.83       355,000      $6.34
     Granted                                62,500       7.00          --         --            --         --
     Exercised (a)                         (92,210)      6.27       (30,000)      4.75       (92,790)      4.80
     Forfeited                              (3,500)      7.00       (35,000)      8.25       (10,000)      8.25
                                         ---------      -----     ---------      -----     ---------      -----

Outstanding at end of year                 154,000       7.32       187,210       6.90       252,210       6.83
                                         =========      =====     =========      =====     =========      =====

Exercisable at end of year                  95,000       6.90       187,210       6.90       252,210       6.83
                                         =========      =====     =========      =====     =========      =====

Weighted average fair value of
     options granted during the year                     1.84                    $  --                    $  --   
                                                        =====                    =====                    =====

Weighted average remaining
     contractual life in years                           7.00                     7.12                     8.13
                                                        =====                    =====                    =====
</TABLE>

         (a) In connection with the exercise of stock options in 1996 and 1998 
             respectively, certain option holders exchanged shares, and treasury
             stock was used in part or total to satisfy the exercise of such
             options.

             SFAS 123 requires the disclosure of pro forma net income and income
             per share of common stock information computed as if the Company
             had accounted for its employee stock options granted subsequent to
             December 31, 1994 under the fair-value-based method set forth in
             SFAS 123. The fair



                                     -F13-
<PAGE>   30
              UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                (dollars in thousands, except per share amounts)


         value for these options was estimated at the date of grant using
         the Black-Scholes option valuation model with the following weighted
         average assumptions for the 1998 grant: a risk-free interest rate of
         6%; a dividend yield of 2%; and a volatility factor of 0.34. In
         addition, the fair value of these options was estimated based on an
         expected life of three years. 

         The Black-Scholes options valuation model was developed for use in
         estimating the fair value of traded options which have no vesting
         restrictions and are fully transferable. In addition, option valuation
         models require the input of highly subjective assumptions, including
         expected stock price volatility. Because the Company's employee stock
         options have characteristics significantly different from those of
         traded options, and because changes in the subjective input assumptions
         can materially affect the fair value estimate, in management's opinion
         the existing models do not necessarily provide a reliable single
         measure of the fair value of its employee stock options. In addition,
         because SFAS 123 is applicable only to options granted subsequent to
         December 31, 1994, the pro forma information does not reflect the pro
         forma effect of all previous stock option grants of the Company, and
         thus the pro forma information is not necessarily indicative of future
         amounts. 

         For purposes of pro forma disclosures, the estimated fair value of the
         options is amortized to expense over the expected life of the options.
         The Company's pro forma information follows:

<TABLE>
<CAPTION>
                                              1998           1997       1996    
                                           ---------      ---------   ----------
<S>                                        <C>            <C>         <C>  
        Pro forma net income               $   2,811        3,035        2,495

        Pro forma earnings per share:
            Basic earnings per share       $    0.71         0.77         0.64
            Diluted earnings per share     $    0.71         0.77         0.63
</TABLE>

(6)      Commitments and Contingencies

         The Company leases some of the equipment used in its operations.
         Generally, the leases are for periods varying from one to five years
         and are renewable at the option of the Company. Total rent expense was
         $185 for 1998, $280 for 1997 and $75 for 1996. As of December 31, 1998,
         future minimum payments under noncancelable operating leases are $36
         for 1999, and none thereafter. 

         The Company is party to lawsuits and claims arising in the normal
         course of business, none of which, in the opinion of management, is
         expected to have a material adverse effect on the Company's financial
         condition, results of operation, or cash flows.

(7)      Sale of Corson Lime Company Assets

         Effective June 21, 1997, Corson, a wholly owned subsidiary of the
         Company, sold substantially all of its aggregate and lime assets for
         $8,231 in cash, including a $376 note collected in October 1997. A
         portion of the proceeds from the sale was used to pay down the
         outstanding balance under the Company's revolving credit facility of
         $2,900. The remainder of the proceeds was used to partially fund the
         Texas plant's modernization and expansion project. The sale resulted in
         a loss of $506 ($405 net of tax benefit), which is included in labor
         and other operating expenses in the accompanying consolidated
         statements of operations.



                                     -F14-
<PAGE>   31
              UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                (dollars in thousands, except per share amounts)



(8)      Earnings Per Share

         The following table sets forth the computation of basic and diluted
earnings per share:

<TABLE>
<CAPTION>
                                                                December 31,                    
                                                 ----------------------------------------- 
                                                    1998            1997          1996   
                                                 -----------    ------------    ----------
<S>                                              <C>            <C>             <C>  
Numerator:
 Net income for basic and diluted
  earnings per common share                       $    2,929          3,096          2,602

Denominator:
 Denominator for basic earnings per
  common share - weighted-average shares           3,967,247      3,929,579      3,890,646

 Effect of dilutive securities:
  Employee stock options                               3,755         15,928         55,071
                                                  ----------     ----------     ----------

 Denominator for diluted earnings per
  common share - adjusted weighted-average
  shares and assumed conversions                   3,971,002      3,945,507      3,945,717
                                                  ==========     ==========     ==========

Basic earnings per common share                   $     0.74           0.79           0.67
                                                  ==========     ==========     ==========
Diluted earnings per common share                 $     0.74           0.78           0.66
                                                  ==========     ==========     ==========
</TABLE>






                                     -F15-
<PAGE>   32
              UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                (dollars in thousands, except per share amounts)



(9)      Summary of Quarterly Financial Data (unaudited)

<TABLE>
<CAPTION>
                                                     1998                                        
                                --------------------------------------------------   
                                MARCH 31,   JUNE 30,  SEPTEMBER 30,   DECEMBER 31,
                                ---------  ---------  -------------   ------------   
<S>                             <C>        <C>        <C>             <C>  
Revenues                         $6,469      8,016        7,423          6,861
                                 ------     ------       ------         ------
Gross profit                      1,276      2,169        1,819          1,797
                                 ------     ------       ------         ------
Net income                          303      1,063          776            787
                                 ======     ======       ======         ======

Net income per common share:
  Basic earnings per share       $ 0.08       0.27         0.19           0.20
                                 ======     ======       ======         ======
  Diluted earnings per share     $ 0.08       0.27         0.19           0.20
                                 ======     ======       ======         ======
</TABLE>


<TABLE>
<CAPTION>
                                                    1997  
                                -------------------------------------------------   
                                MARCH 31,    JUNE 30,  SEPTEMBER 30, DECEMBER 31,
                                ---------    --------- ------------  ------------   
<S>                             <C>          <C>       <C>           <C>  
Revenues                         $ 7,808      10,350       7,725       6,521
                                 -------      ------     -------     -------
Gross profit                         595       1,118       2,521       1,185
                                 -------      ------     -------     -------
Net income                          (488)      2,176(a)    1,321          87
                                 =======      ======     =======     =======

Net income per common share:
  Basic earnings per share       $ (0.12)       0.55(a)     0.34        0.02
                                 =======      ======     =======     =======
  Diluted earnings per share     $ (0.12)       0.55(a)     0.33        0.02
                                 =======      ======     =======     =======
</TABLE>



        (a) Reference is made to Note (3), Income Taxes and Note (7), Sale of
Corson Lime Company Assets.




                                     -F16-
<PAGE>   33

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
        FINANCIAL DISCLOSURE.


                                      NONE




                                    PART III

         The information required in response to Items 10, 11, 12 and 13 is
hereby incorporated by reference to the information under the captions "Election
of Directors," "Executive Officers of the Company Who Are Not Also Directors,"
"Executive Compensation," "Voting Securities and Principal Shareholder" and
"Shareholdings of Company Directors and Executive Officers" in the definitive
Proxy Statement for the Company's 1999 Annual Meeting of Shareholders. The
Company anticipates that it will file the definitive Proxy Statement with the
Securities and Exchange Commission on or before April 30, 1999.





                                     PART IV


ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K.


         (a)  1. The following financial statements are included in Item 8:

                 Report of Independent Auditors

                 Consolidated Financial Statements:

                      Consolidated Balance Sheets as of December 31, 1998 and 
                      1997;

                      Consolidated Statements of Income for the Years Ended
                      December 31, 1998, 1997 and 1996;

                      Consolidated Statements of Stockholders' Equity for the
                      Years Ended December 31, 1998, 1997 and 1996;

                      Consolidated Statements of Cash Flows for the Years Ended
                      December 31, 1998, 1997 and 1996; and 

                      Notes to Consolidated Financial Statements.



              2. All financial statement schedules are omitted because they
                 are not applicable, immaterial, or the required information is
                 presented in the consolidated financial statements or the
                 related notes.




                                     -15-
<PAGE>   34




              3. The following documents are filed with or incorporated by
reference into this Report:

                    3(a)     Articles of Amendment to the Articles of
                             Incorporation of Scottish Heritable, Inc. dated
                             January 25th, 1994 (incorporated by reference to
                             Exhibit 3(a) to the Company's Annual Report on Form
                             10-K for the fiscal year ended December 31, 1993,
                             File Number 0-4197).

                    3(b)     Restated Articles of Incorporation of the Company
                             (incorporated by reference to Exhibit 3(b) to the
                             Company's Annual Report on Form 10-K for the fiscal
                             year ended December 31, 1993, File number 0-4197).

                    3(c)     Composite Copy of Bylaws of the Company, as
                             currently in effect (incorporated by reference to
                             Exhibit 3(b) to the Company's Annual Report on Form
                             10-K for the fiscal year ended December 31, 1991,
                             File Number 0-4197).

                    10(a)    United States Lime & Minerals, Inc. Employee Stock
                             Ownership Plan, as restated and amended effective
                             August 1, 1989 (incorporated by reference to
                             Exhibit 10(b) to the Company's Annual Report on
                             Form 10-K for the fiscal year ended December 31,
                             1995, File Number 0-4197).

                    10(b)    Amendment No. Two to United States Lime & Minerals,
                             Inc. Employee Stock Ownership Plan effective August
                             1, 1996 (incorporated by reference to Exhibit 10(b)
                             to the Company's Annual Report on Form 10-K for the
                             fiscal year ended December 31, 1996, File Number
                             0-4197).

                    10(c)    United States Lime & Minerals, Inc. 401(k) Profit
                             Sharing Plan effective August 1, 1983, as amended
                             and restated effective January 1, 1997
                             (incorporated by reference to Exhibit 10(c) to the
                             Company's Annual Report on Form 10-K for the fiscal
                             year ended December 31, 1996, File Number 0-4197).

                    10(d)    Texas Lime Company Bargaining Unit 401(k) Plan
                             effective as of January 1, 1992 (incorporated by
                             reference to Exhibit 19(f) to the Company's
                             Quarterly Report on Form 10-Q for the quarter ended
                             June, 30, 1992, File Number 0-4197).

                    10(e)    Executive Retention Agreement dated as of June 10,
                             1992 between the Company and Timothy W. Byrne
                             (incorporated by reference to Exhibit 19(b) to the
                             Company's Quarterly Report on Form 10-Q for the
                             quarter ended June 30, 1992, File Number 0-4197).

                    10(f)    Employment Agreement between the Company and
                             Timothy W. Byrne (incorporated by reference to
                             Exhibit 19(c) to the Company's Quarterly Report on
                             Form 10-Q for the quarter ended June 30, 1992, File
                             Number 0-4197).

                    10(g)    United States Lime & Minerals, Inc. 1992 Stock
                             Option Plan (incorporated by reference to Exhibit A
                             to the Company's definitive Proxy Statement for its
                             1992 Annual Meeting of Shareholders held on June 9,
                             1992, File Number 0-4197).

                    10(h)    Employment Agreement dated as of September 27, 1993
                             between the Company and Robert F. Kizer
                             (incorporated by reference to Exhibit 10(a) to the
                             Company's Quarterly Report on Form 10-Q for the
                             quarter ended March 31, 1994, File Number 0-4197).



                                      -16-
<PAGE>   35




                    10(i)    Consulting Agreement dated April 18, 1996 between
                             the Company and Wallace G. Irmscher (incorporated
                             by reference to Exhibit 10(t) to the Company's
                             Annual Report on Form 10-K for the fiscal year
                             ended December 31, 1996, File Number 0-4197).

                    10(j)    Amendment to the Texas Lime Company Bargaining Unit
                             401(k) Plan dated January 1, 1992, effective
                             November 9, 1997 (incorporated by reference to
                             Exhibit 10(j) to the Company's Annual Report on
                             Form 10-K for the fiscal year ended December 31,
                             1997, File Number 0-4197).

                    10(k)    Asset Purchase Agreement among Corson Lime Company,
                             United States Lime & Minerals, Inc., and Highway
                             Materials, Inc., dated as of April 22, 1997
                             (incorporated by reference to Exhibit 2 to the
                             Company's Current Report on Form 8-K dated June 21,
                             1997, File Number 0-4197).

                    10(l)    Amended and Restated Loan and Security Agreement
                             dated December 30, 1997 among United States Lime &
                             Minerals, Inc., Arkansas Lime Company and Texas
                             Lime Company and CoreStates Bank, N.A.
                             (incorporated by reference to Exhibit 10(l) to the
                             Company's Annual Report on Form 10-K for the fiscal
                             year ended December 31, 1997, File Number 0-4197).

                    10(m)    First Amendment to Amended and Restated Loan and
                             Security Agreement dated August 31, 1998 among
                             United States Lime & Minerals, Inc., Arkansas Lime
                             Company and Texas Lime Company and First Union
                             National Bank (incorporated by reference to Exhibit
                             10(a) to the Company's Quarterly Report on Form
                             10-Q for the quarter ended September 30, 1998,
                             File Number 0-4197).

                    10(n)    International Swap Dealers Association Master
                             Agreement dated as of April 3, 1998 among
                             CoreStates Bank, N.A. and the Company (incorporated
                             by reference to Exhibit 10 to the Company's
                             Quarterly Report on Form 10-Q for the quarter ended
                             March 31, 1998, File Number 0-4197).

                    10(o)    Arkansas Lime Company Bargaining Unit 401(k) Plan
                             effective as of January 1, 1998 (incorporated by
                             reference to Exhibit 10(m) to the Company's Annual
                             Report on Form 10-K for the fiscal year ended
                             December 31, 1997, File Number 0-4197).

                    10(p)    Mutual Release Agreement dated as of February 27,
                             1998 between the Company and Robert F. Kizer
                             (incorporated by reference to Exhibit 10(n) to the
                             Company's Annual Report on Form 10-K for the fiscal
                             year ended December 31, 1997, File Number 0-4197).

                    10(q)    Employment Agreement dated as of April 17, 1997
                             between the Company and Johnney G. Bowers
                             (incorporated by reference to Exhibit 10(o) to the
                             Company's Annual Report on Form 10-K for the fiscal
                             year ended December 31, 1997, File Number 0-4197).

                    10(r)    Employment Agreement dated as of December 1, 1998,
                             between the Company and Herbert G.A. Wilson.

                    21       Subsidiaries of the Company.

                    23       Consent of Independent Auditors.

                    27(a)    Financial Data Schedule.

                    27(b)    Restated Financial Data Schedule.


- -----------------------------------------


                                      -17-
<PAGE>   36

         Exhibits 10(a) through 10(j), and 10(o) through 10(r) are management
         contracts or compensatory plans or arrangements required to be filed as
         exhibits.

         (b)      The Company did not file any Current Reports on Form 8-K
                  during the fourth quarter of 1998.



                                      -18-
<PAGE>   37




                                   SIGNATURES



         Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the Registrant has duly caused this Report to be signed on
its behalf by the undersigned, thereunto duly authorized.

                                   UNITED STATES LIME & MINERALS, INC.


Date:  February 26, 1999                By:  /s/ Herbert G.A. Wilson 
                                             ---------------------------------
                                             Herbert G.A. Wilson, President and
                                             Chief Executive Officer

         Pursuant to the requirements of the Securities Exchange Act of 1934,
this Report has been signed below by the following persons on behalf of the
Registrant and in the capacities and on the dates indicated.


Date:  February 26, 1999                By:  /s/ Herbert G.A. Wilson           
                                             ---------------------------------
                                             Herbert G.A. Wilson, President, 
                                             Chief Executive Officer, and 
                                             Director
                                             (Principal Executive Officer)

Date:  February 26, 1999                By:  /s/ Larry T. Ohms                 
                                             ---------------------------------
                                             Larry T. Ohms, Corporate Controller
                                             and Treasurer
                                             (Principal Financial and Accounting
                                             Officer)

Date:  February 26, 1999                By:  /s/ Edward A. Odishaw             
                                             ---------------------------------
                                             Edward A. Odishaw, Director and
                                             Chairman of the Board

Date:  February 26, 1999                By:  /s/ Antoine M. Doumet            
                                             ---------------------------------
                                             Antoine M. Doumet, Director and
                                             Vice Chairman of the Board

Date:  February 26, 1999                By:  /s/ John J. Brown                
                                             ---------------------------------
                                             John J. Brown, Director


Date:  February 26, 1999                By:  /s/ Wallace G. Irmscher          
                                             ---------------------------------
                                             Wallace G. Irmscher, Director


Date:  February 26, 1999                By:  /s/ Richard W. Cardin            
                                             ---------------------------------
                                             Richard W. Cardin, Director


Date:  February 26, 1999                By:  /s/ Timothy W. Byrne             
                                             ---------------------------------
                                             Timothy W. Byrne, Director




                                      -19-
<PAGE>   38
                                                                               

                       UNITED STATES LIME & MINERALS, INC.

         Annual Report on Form 10-K for the Year Ended December 31, 1998
                                Index to Exhibits

         Certain exhibits to this Annual Report on Form 10-K have been
incorporated by reference. For the list of these exhibits, see Item 14 hereof.

         The following exhibits are being filed herewith:

         EXHIBIT 
         NUMBER               DESCRIPTION             
         -----------          ---------------------------------------- 

            10(r)             Employment Agreement dated as of December 1, 1998,
                              effective January 1, 1999, between the Company and
                              Herbert G.A. Wilson

            21                Subsidiaries of the Company.

            23                Consent of Independent Auditors.

            27                Financial Data Schedule.







<PAGE>   1
                                                                   EXHIBIT 10(r)

                              EMPLOYMENT AGREEMENT


         THIS EMPLOYMENT AGREEMENT, effective as of the 1st day of December,
1998 (the "Agreement"), by and between UNITED STATES LIME & MINERALS, INC., a
Texas corporation (herein, together with its successors and permitted assigns,
"Employer"), and HERBERT G. A. WILSON ("Employee").

                              W I T N E S S E T H

         WHEREAS, Employer desires to employ Employee, and Employee desires to
be so employed, on the terms and conditions hereinafter set forth;

         NOW, THEREFORE, in consideration of the premises and the mutual
covenants herein contained, Employer and Employee hereby agree as follows:

         1.  Employment.

             (a) Employer hereby employs Employee to serve, subject to the
supervision and control of Employer's Board of Directors (the "Board"), as
Employer's President and Chief Executive Officer ("CEO"), and to undertake and
discharge, in accordance with the

<PAGE>   2

terms and conditions of this Agreement, such duties, functions, and
responsibilities for Employer and its subsidiaries as are from time to time
assigned to Employee by the Board.

             (b) Employer hereby agrees to use its best efforts to cause the
Board to appoint Employee as a director of Employer ("Director") effective
December 1, 1998, and there after to use its best efforts to cause the Board to
nominate, and the shareholders of Employer to elect, Employee as a Director at
each successive annual meeting of shareholders of Employer for so long as
Employee serves as CEO. Employer hereby also agrees to use its best efforts to
cause the Board to name Employee to the Executive Committee of the Board for so
long as Employee serves as a Director and CEO.

         2.  Term; Termination of Employment.

             (a) Employee's employment under this Agreement shall commence as
of December 1, 1998, or as soon thereafter as practicable, and shall continue
until December 31, 2003, and for successive one-year periods thereafter (the
"Employment Term"), unless either Employee or Employer gives at least
one-year's prior written notice of intent not to renew the Employment Term, or
Employee's employment is terminated earlier by Employee or Employer as
hereinafter provided. Immediately upon termination of Employee's employment
hereunder for any reason (other than death), Employee hereby agrees to resign
as a Director and as a director, officer, employee, and agent of each of
Employer's subsidiaries.


                                      -2-
<PAGE>   3

             (b) Employee may terminate his employment under this Agreement at
any time, by giving at least three (3) months' prior written notice of such
termination to Employer. In the event that Employee terminates his employment
under this Agreement prior to or later than nine (9) months after a Change in
Control (as defined below), Employee shall be entitled to no Severance Payments
(as defined below). In the event that Employee terminates his employment under
this Agreement within nine (9) months after a Change in Control, Employee shall
be entitled to Severance Payments in the amount and under the circumstances set
forth in subsection 2(f) below.

             (c) Employer may terminate Employee's employment under this
Agreement at any time, for any reason or for no reason, immediately by giving
written notice to Employee. In the event that Employer terminates Employee's
employment under this Agreement for Cause (as defined below), Employee shall be
entitled to no Severance Payments. In the event that Employer terminates
Employee's employment under this Agreement without Cause, Employee shall be
entitled to Severance Payments in the amount and under the circumstances set
forth in subsection 2(f). For purposes of this Agreement, "Cause" shall be
deemed to exist if (1) Employee commits fraud, theft, larceny, or any other
crime (other than minor misdemeanors); (2) Employee fails or refuses to obey
lawful instructions of the Board or of any committee thereof, or commits any
willful misconduct or disloyalty; (3) Employee is guilty of habitual
insobriety, habitual inattention to his duties, functions, or responsibilities,
or repeated negligence in the performance of his duties, functions, or
responsibilities; or (4) Employee otherwise commits a material breach of this
Agreement.


                                      -3-
<PAGE>   4

             (d) Employee's employment under this Agreement shall terminate
automatically upon the death or disability of Employee, or upon the expiration
of the Employment Term after Employee or Employer has given the notice of
non-renewal provided for in subsection 2(a). For purposes of this subsection
2(d), Employee shall be deemed to be disabled when he is deemed disabled under
Employer's disability policy for executive officers as in effect at that time.
In the event that Employee's employment under this Agreement terminates due to
death, disability, or non-renewal of the Employment Term, Employee shall be
entitled to no Severance Payments.

             (e) Upon any termination of Employee's employment under this
Agreement, other than a termination of Employee's employment by Employer
without Cause pursuant to subsection 2(c) or a termination by Employee within
nine (9) months after a Change in Control pursuant to subsection 2(b),
Employee, his personal representatives, or his estate, as the case may be,
shall be entitled to receive only the Base Salary (defined below) and Benefits
(defined below) paid or provided to Employee hereunder in respect of Employee's
service through the date of such termination and no other compensation.

             (f) (1) In the event that Employer terminates Employee's
employment under this Agreement without Cause pursuant to subsection 2(c), or
Employee terminates his employment under this Agreement within nine (9) months
after a Change in Control pursuant to subsection 2(b), Employee shall be
entitled to receive the Base Salary and Benefits paid or provided to Employee
hereunder in respect of Employee's service through the date of such termi-


                                      -4-
<PAGE>   5
nation and, in addition, shall be entitled to receive severance payments (the
"Severance Pay ments") in the amount and under the circumstances set forth in
this subsection 2(f). Except in the case of a Change in Control as provided in
paragraph 2(f)(3), the Severance Payments shall consist of a continuation of
Employee's annual Base Salary and Benefits in effect on the date of
termination, paid and provided on the same periodic and other bases as provided
for in subsections 3(a) and (b) below, as if Executive's employment hereunder
were continuing. In the case of a Change in Control after which Employee elects
to receive his Severance Payments in a lump-sum as provided in paragraph
2(f)(3), the Severance Payments shall be paid in a lump-sum as provided
therein, calculated based upon Employer's out-of-pocket costs to provide the
Base Salary and Benefits, with no discounting for present value, no tax
gross-up or discount, and no effort to pay for or otherwise provide comparable
Benefits to Employee.

                 (2) In the event that Employer terminates Employee's
employment under this Agreement without Cause pursuant to subsection 2(c) prior
to a Change in Control or after two (2) years after a Change in Control,
Employee shall be entitled to Severance Payments equal to his then-current
annual Base Salary and Benefits for one (1) year.

                 (3) In the event that Employer terminates Employee's
employment under this Agreement without Cause pursuant to subsection 2(c) at
any time within two (2) years after a Change in Control, or Employee terminates
his employment under this Agreement pursuant to subsection 2(b) at any time
within nine (9) months after a Change in Control, then, notwithstanding
anything to the contrary contained in this Agreement, Employee shall be
entitled


                                      -5-
<PAGE>   6

to Severance Payments equal to his then-current annual Base Salary and Benefits
for the greater of the number of full and partial years remaining between the
date of termination of employment and the end of the two-year period following
the Change in Control, or one (1) year. In the case of Severance Payments
related to a termination of employment after a Change in Control, or Severance
Payments related to a termination of employment before a Change in Control
which Severance Payments continue after a Change in Control, the Severance
Payments, or any remaining portion thereof, shall, at the election of Employee,
be payable in a lump sum, net of withholding for all applicable taxes and other
amounts which may be properly withheld, within thirty (30) calendar days
following such election. For purposes of this Agreement, a "Change in Control"
shall be deemed to occur if, but only if, (a) Inberdon Enterprises, Ltd.
("Inberdon ") and its affiliates and associates, on a collective basis, cease
to beneficially own, directly or indirectly, at least twenty percent (20%) of
the then-outstanding common stock of Employer, or (b) the current shareholders
of Inberdon and their affiliates and associates, on a collective basis, cease
to beneficially own, directly or indirectly, at least fifty percent (50%) of
the then-outstanding common stock of Inberdon.

                 (4) Employee acknowledges and agrees that the Severance Pay
ments provided for herein shall be in full and total satisfaction and
settlement of any and all claims, suits, demands, judgments, actions, and
causes of action, of whatever nature, which at the time of such termination
Employee then has or may have against Employer or any affiliate, subsidiary,
Director, officer, employee, agent, or shareholder of Employer or of any of its
subsidiaries, arising by virtue of any thing whatsoever, including without
limitation claims based 


                                      -6-
<PAGE>   7

upon this Agreement, claims based upon other agreements, claims based upon
quasi-contract, claims sounding in tort, employment discrimination claims,
claims under the Employee Retirement Income Security Act of 1974, and claims
under any other federal, state, or local statute, regulation, or common law.
Employee and Employer further agree that, except in the case of a termination
of Employee's employment under this Agreement after a Change in Control
pursuant to paragraph 2(f)(3), prior to payment by Employer of any Severance
Payment or Payments Employee and Employer shall each execute and deliver
irrevocable mutual general releases of Employer and all affiliates,
subsidiaries, Directors, officers, employees, agents, and shareholders of
Employer and of all of its subsidiaries, and of Employee and his heirs and
executors, and releasing Employer, Employee, and such persons from all such
claims, in form and content reasonably acceptable to Employer, Employee, and
their respective counsel.

         3.  Compensation.

             (a) In consideration of the services to be rendered by Employee
under this Agreement, Employer shall pay Employee a salary (the "Base Salary")
at an annual rate of at least U.S. $220,000 per annum. During the fourth (4th)
quarter of each calendar year, commencing with fourth (4th) quarter 1999, the
Board or the Compensation Committee of the Board shall review and, if
appropriate, adjust the Base Salary, effective on January 1 of the next
succeeding year, and determine the amount of any bonus that Employee may be
awarded with respect to the then-current year. The Base Salary shall be payable
on a periodic basis, in arrears, in accordance with Employer's customary
payroll practices for its executives from time to time,


                                      -7-
<PAGE>   8

net of withholding for all applicable taxes and other amounts which may be
properly withheld. Employee's bonus, if any, shall be paid within the first
(1st) quarter of the next succeeding year.

             (b) During the course of his employment under this Agreement,
Employee shall be entitled to participate in all employee health insurance,
life insurance, sick leave, long-term disability, and other fringe benefit
programs of Employer, to the extent and on the same terms and conditions
(subject, however, to the terms and conditions of any such programs) as from
time to time are accorded other employees serving as executive officers of
Employer (the "Benefits"). In lieu of Employer health insurance, Employee may
elect to have Employer pay Employee in cash, without any tax gross-up or other
adjustments, an amount equal to the costs to Employee of health insurance
benefits pursuant to the Ontario Hospital Insurance Plan (in which case, such
costs shall be considered within the definition of Benefits for purposes of
this Agreement).

             (c) Employee shall also be entitled to at least five (5) weeks'
paid vacation each calendar year, commencing with 1999, at times to be mutually
agreed upon between Employee and the Executive Committee of the Board. In
addition, Employer shall provide to Employee in Texas the use of a late model
motor vehicle suitable to Employee's executive position (Ford Crown Victoria or
comparable) and shall pay the reasonable costs of maintaining and operating
such vehicle pursuant to the customary practices of Employer. Such vehicle
shall promptly be returned to Employer, in the same condition as provided to
Employee, reasonable wear and tear excepted, upon the termination of Employee's
employment for any reason. Lastly,


                                      -8-
<PAGE>   9

Employer shall also reimburse Employee for the following reasonable expenses
incurred by Employee in entering into this Agreement and commencing employment
in Dallas, Texas hereunder: legal fees, not to exceed U.S. $5,000, expenses of
selling his current home and moving household and personal items to the Dallas,
Texas area, not to exceed U.S. $35,000, and travel to and from and temporary
housing expenses in the Dallas, Texas area, incurred prior to Employee's move,
subject to mutual agreement between Employee and the Executive Committee of the
Board.

             (d) Employer hereby agrees to use its best efforts to cause the
Compensation Committee of the Board to grant to Employee, from time to time,
stock options under the Employer's 1992 Stock Option Plan (the "Plan").
Employer shall also use its best efforts to cause the Board and the
shareholders of Employer to increase the number of shares reserved for options
for key employees of Employer by approving and adopting, at Employer's 1999
Annual Meeting of Shareholders, either an amendment to the Plan to increase the
number of shares authorized for issuance under the Plan, or a new plan
providing for the grant of stock options. All such options shall be subject to
and governed by all of the terms and conditions of the Plan or of the new plan.

             (e) Employer shall reimburse Employee for expenses reasonably paid
or incurred by Employee in connection with the performance of his duties,
functions, and responsibilities under this Agreement, provided that Employee
shall document all such expenses in accordance with Employer's procedures in
effect from time to time.


                                      -9-
<PAGE>   10

             (f) In respect of Employee's employment under this Agreement,
Employer shall maintain directors' and officers' liability insurance having
coverage limits at least as high as presently being maintained by Employer if
the same shall be reasonably available in the judgment of the Board.

         4.  Confidential Information. Employee hereby agrees that he shall not,
during his employment under this Agreement or at any time thereafter, furnish,
disclose, or reveal to any third party, firm, or person (except in the course
of, and only to the extent required for, the proper performance of his duties,
functions, and responsibilities hereunder), nor use or appropriate to his own
personal use or benefit or permit any third party, firm, or other person to use
or benefit from, any information of any kind or character related in any manner
to Employer or its affiliates or subsidiaries, including without limitation
information with respect to it or their financial condition, products,
businesses, operations, plans, employees, customers, suppliers, vendors, or
prospective employees, customers, suppliers, or vendors, whether or not
acquired, learned, obtained, or developed by Employee alone or in conjunction
with others ("Confidential Information"). Upon the termination of his
employment under this Agreement for any reason, Employee shall promptly return
to Employer all papers, documents, films, blueprints, drawings, magnetic tapes,
diskettes, and other storage media (of any kind) in his possession either
containing or reflecting Confidential Information, or otherwise relating to
Employer or any of its affiliates or subsidiaries, and shall not retain copies
thereof.


                                      -10-
<PAGE>   11

         5.  Covenant Not To Compete; No Raid or Solicitation.

             (a) Employee agrees that, without the prior written consent of
Employer, he shall not, during his employment under this Agreement, and for one
(1) year following Employee's termination of his employment pursuant to
subsection 2(b) other than within nine (9) months after a Change in Control,
for six (6) months following the expiration of the Employment Term as a result
of Employee's notice of non-renewal given pursuant to subsection 2(a), for six
(6) months following Employer's termination of Employee's employment pursuant
to subsection 2(c) for Cause, for three (3) months following Employee's
termination of his employment pursuant to subsection 2(b) within nine (9)
months after a Change in Control, and for three (3) months following Employer's
termination of Employee's employment pursuant to subsection 2(c) without Cause
(collectively, the "Noncompetition Period"), engage or participate, directly or
indirectly, whether as an owner, partner, limited partner, member, director,
officer, employee, agent, consultant, or representative, in any business or
other enterprise competing, directly or indirectly, with Employer or any of its
affiliates or subsidiaries, whether now existing or hereafter created or
acquired (all the foregoing being collectively referred to herein as the
"Companies"), within the Noncompetition Areas (as defined below). A business or
other enterprise shall be deemed to be "competing" with the Companies if,
within any Noncompetition Area, it conducts (1) any line of business which the
Companies, or any of them, then conducts or has conducted within such
Noncompetition Area at any time within the one (1) year preceding the date of
termination of Employee's employment; and (2) any line of business which the
Companies, or any of them, plans, as of the date of termination of Employee's


                                      -11-
<PAGE>   12

employment, to enter within such Noncompetition Area within the one-year period
following the termination of Employee's employment. For purposes of this
Agreement, the term "Noncompetition Areas" shall mean all those geographic
areas where the Companies, or any of them, is doing business or competing for
business at the date of termination of Employee's employment for any reason.
For purposes of this subsection 5(a), a business enterprise shall be deemed to
be conducting "business" within the Noncompetition Areas if it maintains
manufacturing, production, quarrying, sales, or distribution facilities within
the Noncompetition Areas, or solicits or services customers located within such
Noncompetition Areas. Notwithstanding anything to the contrary contained in
this subsec tion 5(a), the described restrictions on Employee's activities
shall not be deemed to include Employee's direct or indirect beneficial
ownership of any equity securities in a publicly-traded business or other
entity, which securities do not constitute more than two percent (2%) of the
relevant class of equity security issued and outstanding, or give Employee
"control" (as such term is used in the Securities Act of 1933 and the rules and
regulations promulgated thereunder) of such entity.

             (b) During the Noncompetitive Period, Employee shall also not,
either alone or with or on behalf of any third party, firm, or other person,
solicit, induce, or influence any third party, firm, or other person to (1)
solicit, divert, take away, or induce customers (wher ever located) of any of
the Companies to avail themselves of the services or products of others which
are competitive with those of any of the Companies, or sell or furnish or seek
to sell or furnish such services or products to such customers; or (2) solicit,
direct, take away, or induce any employee of any of the Companies to leave the
employ of the Companies, or hire or employ


                                      -12-
<PAGE>   13

or seek to hire or employ any person who, at any time within six (6) months
preceding such action, was an employee of any of the Companies. For purposes of
this subsection 5(b), the term "customers" shall include any and all
individuals, business organizations and entities, and governmental agencies, no
matter how organized and regardless of whether they are organized for profit or
not, with which any of the Companies has or had agreements, contracts, or
arrangements, to which any of the Companies has sold any product or provided
any service, or with which any of the Companies has conducted business
negotiations, in each such case at any time within three (3) years prior to the
termination of Employee's employment under this Agreement.

             (c) In the event that any court of competent jurisdiction shall
determine that any restriction on Employee contained in this Section 5 is
illegal, invalid, or unenforceable by reason of the nature, scope, temporal
period, or geographic area of such restriction, or for any other reason, the
parties agree that such restriction shall be modified and reformed to the
minimum extent necessary so that such restriction, as so modified and reformed,
shall be legal, valid, and enforceable in such jurisdiction. In such event,
such restriction as so modified and reformed shall continue in effect in such
jurisdiction and such restriction, as existing prior to such modification and
reformation, shall continue in full force and effect in all other
jurisdictions. It is the intention of the parties that all restrictions on
Employee contained herein shall be enforceable for the benefit of Employer to
the maximum possible extent.


                                      -13-
<PAGE>   14

         6.  Enforcement.

             (a) Employee recognizes and agrees that, in the event of a breach
of any of the provisions of Section 4 or 5 by Employee, Employer may suffer
irreparable harm and not have an adequate remedy at law. Accordingly, Employee
hereby agrees that, in the event of a breach or threatened breach by Employee
of any of the provisions contained in such Sections, Employer shall be
entitled, in addition to all other remedies which may be available to Employer,
to equitable relief, including without limitation enforcement of such provision
by temporary restraining order, preliminary and permanent injunction, and
decree of specific performance.

             (b) Except as set forth in subsection 6(a), any controversy or
claim arising out of or relating to this Agreement, or any breach thereof,
shall be settled by binding arbitration in the city in which Employer's
principal executive offices are located in accordance with the Commercial
Arbitration Rules of the American Arbitration Association, and judgment upon
the award rendered by the arbitrator(s) may be entered in any court having
jurisdiction thereof. The parties hereby agree to be bound by the decision of
the arbitrator(s).

         7.  Governing Law. This Agreement and the employment relationship
between Employer and Employee hereunder shall be governed by and construed and
enforced in accordance with the laws of the State of Texas, without regard to
the conflicts of law rules thereof.


                                      -14-
<PAGE>   15

         8.  Severability. If any provision of this Agreement is held to be
illegal, invalid, or unenforceable (and, with respect to provisions contained
in Section 5, cannot be modified and reformed pursuant to subsection 5(c) such
that such provision is thereafter legal, valid, and enforceable), such
provision shall be severed and stricken from this Agreement, and in all other
respects this Agreement shall remain in full force and effect.

         9.  Only Agreement; Amendments. This Agreement constitutes the only
agreement between Employer and Employee concerning the within subject matter,
and supersedes any and all prior oral or written communications between
Employer and Employee regarding the within subject matter. No amendment,
modification, or supplement to this Agreement shall be effective, unless it is
in writing and signed by Employer and Employee.

         10. Agreement Binding; Successors and Assigns. This Agreement has been
duly authorized on behalf of Employer by the Board. This Agreement is personal
in nature, and no party hereto shall assign or transfer this Agreement or any
of its or his respective rights or obligations hereunder without the prior
written consent of the other party hereto. This Agreement shall inure to the
benefit of and be binding upon Employer and Employee and their respective
heirs, successors, and permitted assigns.

         11. Notices. Any notice required or permitted to be given hereunder
shall be in writing and shall be delivered in person, by certified or
registered mail, return receipt requested, or by overnight courier, at the
address set forth opposite the intended recipient's name 


                                      -15-
<PAGE>   16

below. Either party may by notice to the other party hereto change the address
of the party to whom notice is to be given. The date of notice shall be the
date delivered, if delivered in person, or the date received, if delivered by
mail or overnight courier.

         12. Waiver. No waiver by any party to this Agreement of any violation,
breach, or default shall be effective unless the same shall be in writing and
signed. No waiver by any party of any violation, breach, or default shall be
construed to constitute a waiver of, or consent to, the present or future
violation, breach, or default of the same or of any other provision hereof.

         13. No Reliance; Review by Attorney. Employee hereby acknowledges and
represents that he has had full opportunity to review financial statements and
other documents relating to Employer and to ask questions of Employer
concerning its condition, financial and otherwise, business, and prospects, but
has relied solely upon his independent analysis of Employer in deciding to
execute this Agreement, having received no representations or warranties from
Employer concerning its condition, financial or otherwise, business, or
prospects. In addition, Employee acknowledges and represents that he has had
full opportunity to review the terms and conditions of this Agreement with an
attorney, that he is executing this Agreement with full knowledge of the legal
effect thereof after advice of counsel, and that his execution of this
Agreement and the performance of his duties, functions, and responsibilities


                                      -16-
<PAGE>   17

hereunder will not conflict with, violate, breach, or constitute a default
under any law, ordinance, or regulation or any agreement, arrangement, or
understanding to which he is bound.

         IN WITNESS WHEREOF, Employer and Employee have executed this Agreement
as of the date first set forth above.

                                        UNITED STATES LIME &
                                         MINERALS, INC.



                                        By:  /s/ EDWARD A. ODISHAW
                                             ----------------------------------
                                             Edward A.  Odishaw, Esquire
                                             Chairman of the Board of Directors

Employer's Address:

Edward A.  Odishaw, Esquire
Chairman, Unites States Lime &
  Minerals, Inc.
c/o United States Lime & Minerals, Inc.
12221 Merit Drive
Suite 500
Dallas, TX  75251

Witness:                                EMPLOYEE


/s/ GILLIAN F. NIBLETT                  /s/ HERBERT G. A. WILSON
- -------------------------               ------------------------------
Gillian F. Niblett                      Herbert G. A. Wilson
Employee's Address:

Herbert G. A. Wilson
c/o United States Lime & Minerals, Inc.
12221 Merit Drive
Suite 500
Dallas, TX  75251


                                     -17-

<PAGE>   1
                                                                      EXHIBIT 21




                           SUBSIDIARIES OF THE COMPANY



                 Arkansas Lime Company, an Arkansas Corporation

                  Colorado Lime Company, a Colorado Corporation

                     Texas Lime Company, a Texas Corporation

<PAGE>   1
                                                                      EXHIBIT 23



                        CONSENT OF INDEPENDENT AUDITORS

We consent to the incorporation by reference in the Registration Statement (Form
S-8 No.33-58311) pertaining to the United States Lime & Minerals, Inc. 1992
Stock Option Plan, as amended, of our report dated January 19, 1999, with
respect to the consolidated financial statements of United States Lime &
Minerals, Inc. and subsidiaries included in the Annual Report on Form 10-K for
the year ended December 31, 1998.



                                                          /s/ ERNEST & YOUNG LLP
                                                          Ernest & Young LLP





Dallas, Texas
March 3, 1999

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<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               DEC-31-1998
<CASH>                                             688
<SECURITIES>                                         0
<RECEIVABLES>                                    3,360
<ALLOWANCES>                                         0
<INVENTORY>                                      3,154
<CURRENT-ASSETS>                                 7,341
<PP&E>                                          73,228
<DEPRECIATION>                                  32,152
<TOTAL-ASSETS>                                  51,090
<CURRENT-LIABILITIES>                            7,977
<BONDS>                                              0
                                0
                                          0
<COMMON>                                           529
<OTHER-SE>                                      26,135
<TOTAL-LIABILITY-AND-EQUITY>                    51,090
<SALES>                                         28,769
<TOTAL-REVENUES>                                28,769
<CGS>                                           21,708
<TOTAL-COSTS>                                   21,708
<OTHER-EXPENSES>                                 3,489
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  26
<INCOME-PRETAX>                                  3,854
<INCOME-TAX>                                       925
<INCOME-CONTINUING>                              2,929
<DISCONTINUED>                                       0
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<CHANGES>                                            0
<NET-INCOME>                                     2,929
<EPS-PRIMARY>                                     0.74
<EPS-DILUTED>                                     0.74
        

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