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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
----------------------------------
Washington, D.C. 20549

Form 10-Q

(Mark One)
[ X ] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF
THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended MARCH 31, 2003

OR

[ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR
15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ........ to ........

Commission file number is 000-4197



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


TEXAS 75-0789226
---------------------------------- ---------------------------
(State or other jurisdiction of (I.R.S. Employer
incorporation or organization) Identification No.)


13800 MONTFORT DRIVE, SUITE 330, DALLAS, TX 75240
- -------------------------------------------- ---------------------------
(Address of principal executive offices) (Zip Code)


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


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 check mark whether the registrant is an accelerated filer (as
defined in Rule 12b-2 of the Exchange Act).

Yes No X
------ ------

Indicate the number of shares outstanding of each of the issuer's classes of
common stock, as of the latest practicable date: As of May 5, 2003, 5,799,845
shares of common stock, $0.10 par value, were outstanding.






PART I. FINANCIAL INFORMATION
ITEM 1: FINANCIAL STATEMENTS

UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED BALANCE SHEETS
(In thousands of dollars)
(Unaudited)



MARCH 31, DECEMBER 31,
2003 2002
------------ ------------
ASSETS

Current Assets:
Cash and cash equivalents $587 226
Trade receivables, net 6,814 5,202
Inventories 4,718 4,782
Prepaid expenses and other current assets 291 262
------------ ------------
Total current assets 12,410 10,472

Property, plant and equipment, at cost: 115,699 114,062
Less accumulated depreciation (45,072) (43,656)
------------ ------------
Property, plant and equipment, net 70,627 70,406

Deferred tax assets, net 2,359 2,359
Other assets, net 1,240 1,282
------------ ------------

Total assets $86,636 84,519
============ ============

LIABILITIES AND STOCKHOLDERS' EQUITY

Current Liabilities:
Current installments of debt $6,734 4,533
Accounts payable 3,366 2,472
Accrued expenses 1,235 953
------------ ------------
Total current liabilities 11,335 7,958

Debt, excluding current installments 36,667 37,500
Other liabilities 745 755
------------ ------------
Total liabilities 48,747 46,213

Stockholders' Equity:
Common stock 580 580
Additional paid-in capital 10,392 10,392
Accumulated other comprehensive loss (254) (254)
Retained earnings 27,171 27,588
------------ ------------

Total stockholders' equity 37,889 38,306
------------ ------------

Total liabilities and stockholders' equity $86,636 84,519
============ ============



See accompanying notes to condensed consolidated financial statements.




Page 2 of 13



UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
(In thousands of dollars, except per share data)
(Unaudited)




QUARTERS ENDED MARCH 31,
--------------------------------------------------------
2003 2002
-------------------------- --------------------------

REVENUES $ 9,556 100.0% 8,977 100.0%

Cost of revenues:
Labor and other operating expenses 6,300 65.9% 5,602 62.4%
Depreciation, depletion
and amortization 1,507 15.8% 1,538 17.1%
---------- ---------- ---------- ----------
7,807 81.7% 7,140 79.5%
---------- ---------- ---------- ----------

GROSS PROFIT 1,749 18.3% 1,837 20.5%

Selling, general and
administrative expenses 1,059 11.1% 958 10.7%
---------- ---------- ---------- ----------

OPERATING PROFIT 690 7.2% 879 9.8%
---------- ---------- ---------- ----------

Other expenses (income):
Interest expense 1,021 10.7% 1,114 12.4%
Other expense (income), net (12) (0.1)% 378 4.2%
---------- ---------- ---------- ----------
1,009 10.6% 1,492 16.6%
---------- ---------- ---------- ----------

LOSS BEFORE INCOME TAXES (319) (3.3)% (613) (6.8)%
---------- ---------- ---------- ----------

Income tax benefit (48) (0.5)% (142) (1.6)%
---------- ---------- ---------- ----------

NET LOSS $ (271) (2.8)% (471) (5.2)%
========== ========== ========== ==========


LOSS PER SHARE OF COMMON STOCK
Basic $ (0.05) (0.08)
Diluted $ (0.05) (0.08)



See accompanying notes to condensed consolidated financial statements.






Page 3 of 13



UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands of dollars)
(Unaudited)



QUARTERS ENDED MARCH 31,
----------------------------
2003 2002
------------ ------------

OPERATING ACTIVITIES:
Net loss $ (271) (471)
Adjustments to reconcile net loss to net cash provided by
operations:

Depreciation, depletion and amortization 1,569 1,595
Amortization of financing costs 62 57
Loss on sale of assets 6 5
Changes in operating assets and liabilities:
Trade receivables, net (1,611) (799)
Inventories 64 249
Prepaid expenses and other current assets (29) 571
Other assets, net (20) 2
Accounts payable and accrued expenses 1,176 (1,022)
Other liabilities (10) (31)
------------ ------------
Total adjustments 1,207 626
------------ ------------
Net cash provided by operations $ 936 156

INVESTING ACTIVITIES:
Purchase of property, plant and equipment $(1,798) (1,477)
Proceeds from sale of property, plant and equipment -- 6
------------ ------------
Net cash used in investing activities $(1,798) (1,471)

FINANCING ACTIVITIES:
Payment of common stock dividends $ (145) (148)
Proceeds from borrowings 2,201 1,750
Repayment of debt (833) (833)
------------ ------------
Net cash provided by financing activities $ 1,223 769
------------ ------------

Net increase (decrease) in cash and cash equivalents 361 (546)
Cash and cash equivalents at beginning of period 226 606
------------ ------------

Cash and cash equivalents at end of period $ 587 60
============ ============


Supplemental cash flow information:
Interest paid $ 959 1,057

Income taxes paid, net $ -- 376



See accompanying notes to condensed consolidated financial statements.



Page 4 of 13



UNITED STATES LIME & MINERALS, INC. AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements

(Unaudited)


1. Basis of Presentation


Presentation. The condensed consolidated financial statements included
herein have been prepared by the Company without independent audit. In the
opinion of the Company's management, all adjustments of a normal and
recurring nature necessary to present fairly the financial position,
results of operations and cash flows for the periods presented have been
made. Certain information and footnote disclosures normally included in
financial statements prepared in accordance with generally accepted
accounting principles have been condensed or omitted. It is suggested that
these condensed consolidated financial statements be read in conjunction
with the consolidated financial statements and notes thereto included in
the Company's Annual Report on Form 10-K for the period ended December 31,
2002. The results of operations for the three-month period ended March 31,
2003 are not necessarily indicative of operating results for the full year.

Stock-based Compensation. The Company accounts for stock-based
compensation using the intrinsic value method prescribed by Accounting
Principles Board Opinion No. 25, "Accounting for Stock Issued to
Employees." Stock-based compensation expense associated with option grants
was not recognized in the net loss for the three month periods ended March
31, 2003 and 2002, as all options granted have had exercise prices equal to
the market value of the underlying common stock on the dates of grant. The
following table illustrates the effect on net loss and loss per common
share if the Company had applied the fair-value-based recognition
provisions of Statement of Financial Accounting Standards No. 123,
"Accounting for Stock-Based Compensation," to stock-based employee
compensation:



FOR THE THREE MONTHS
ENDED MARCH 31,
----------------------------
2003 2002
------------ ------------

Net loss as reported $ (271) (471)
Stock-based employee compensation expense
determined under fair-value-based method
for all awards, net of related tax effects (3) (18)
------------ ------------
Pro forma net loss $ (274) (489)
============ ============

Basic and diluted loss per common share,
as reported $ (0.05) (0.08)

Pro forma basic and diluted loss per
common share $ (0.05) (0.08)








Page 5 of 13




2. Embezzlement Matter and Restatements and Reclassification of Previously
Reported Amounts

On January 31, 2002, the Company announced that it had discovered that
an employee who had recently left the Company may have improperly diverted
Company funds without authorization. Trading in the Company's common stock
on the Nasdaq National Market(R) ("Nasdaq") was halted, and the Audit
Committee of the Company's Board of Directors retained outside counsel to
conduct a special investigation into the matter. The Audit Committee also
retained an independent accounting firm to review the Company's internal
controls and to make recommendations for improvement that the Company has
implemented. The Company also contacted the Securities and Exchange
Commission (the "SEC"), as well as criminal authorities, and cooperated
with the SEC, Nasdaq, and criminal authorities with respect to their
investigations into this matter.

The Company's former Vice President - Finance, Controller, Treasurer,
and Secretary, Larry Ohms (the "Former VP Finance"), over a period of four
years beginning in 1998, embezzled approximately $2,179,000 from the
Company. The Former VP Finance voluntarily resigned from the Company on
January 22, 2002, approximately one week before the Company discovered the
defalcations. The Company has since filed suit against the Former VP
Finance. The Former VP Finance has stated that no one else at the Company
was involved in perpetrating the embezzlements. From the results of the
special investigation and Mr. Ohms' testimony, the Company believes this
statement to be accurate. In 2002, Mr. Ohms pleaded guilty to one count of
wire fraud and one count of making a false statement to the SEC, and on
March 24, 2003 he was sentenced to a term in federal prison and ordered to
pay $2,179,000 in restitution to the Company.

On March 14, 2002, the Company received $500,000 in insurance proceeds
from the Company's insurance policies covering employee theft. The $500,000
was recorded on the Consolidated Balance Sheet at December 31, 2001 in
prepaid expenses and other assets, and recognized in the Consolidated
Statement of Operations in other income in the fourth quarter 2001. In
addition, the Company retained counsel for assistance in its efforts to
recover the embezzled funds from the Former VP Finance, and to pursue
possible civil actions on behalf of the Company against third parties. The
Former VP Finance has claimed not to have any funds. Any recoveries are
being recognized in the quarters in which the recoveries are realized, and
the costs of the Company's special investigation, the Company's cooperation
with the SEC, Nasdaq, and criminal authorities in their investigations and
the Company's ongoing recovery efforts are being expensed as incurred.
During the first quarter 2003, the Company recorded recoveries of $81,000
($0.01 per share), net of income tax benefits ($100,000 gross) and
embezzlement-related costs of $69,000 ($0.01 per share), net of income tax
benefits ($81,000 gross), compared to embezzlement-related costs of
$290,000 ($0.05 per share), net of income tax benefits ($376,000 gross) in
the first quarter 2002.

3. Inventories

Inventories consisted of the following at:
(In thousands of dollars)



MARCH 31, DECEMBER 31,
2003 2002
------------ ------------
Lime and limestone inventories:

Raw materials $ 1,749 $ 1,704
Finished goods 892 942
------------ ------------

2,641 2,646
Parts inventories 2,077 2,136
------------ ------------
Total inventories $ 4,718 $ 4,782
============ ============






Page 6 of 13


4. Banking Facilities and Other Debt

On April 22, 1999, the Company entered into a credit agreement with a
consortium of commercial banks for a $50,000,000 Senior Secured Term Loan
(the "Loan"). The Loan is repayable over a period of approximately eight
years, maturing on March 30, 2007, and requires monthly principal payments
of $278,000, which began April 30, 2000, with a final principal payment of
$26,944,000 on March 30, 2007, which equates to a 15-year amortization. The
Company paid a fee equivalent to 2.50% of the Loan value to the placement
agent.


The interest rate on the first $30,000,000 of the Loan is 8.875%. The
subsequent installments bear interest from the date they were funded at
3.52% above the secondary market yield of the United States Treasury
obligation maturing May 15, 2005. The blended rate for the additional
$20,000,000 is 9.84%.


The Loan is secured by a first lien on substantially all of the
Company's assets, with the exception of accounts receivable and inventories
which secure the Company's $5,000,000 revolving credit facility. The Loan
agreement contains covenants that restrict the incurrence of debt,
guaranties and liens, and places certain restrictions on the payment of
dividends and the sale of significant assets. The Company is also required
to meet minimum debt service coverage ratios on an on-going basis and
maintain a minimum level of tangible net worth.


On January 31, 2003, the maturity of the Company's $5,000,000 revolving
credit facility was extended to July 31, 2003. From January 1, 2003 through
March 2, 2003, the revolving credit facility bore interest at LIBOR plus a
margin of 1.40% to 3.55%, in accordance with a defined rate spread based
upon the Company's then-current ratio of total funded debt to earnings
before interest, taxes, depreciation and amortization (EBITDA).


On March 3, 2003, the Company entered into a Loan and Security
Agreement with another bank for a new $5,000,000 revolving credit facility
to replace the prior facility. In addition, the Company obtained a new
$2,000,000 equipment line of credit (available for financing or leasing
large mobile equipment used in its operations) from the same bank. The new
revolving credit facility is secured by the Company's accounts receivable
and inventories, provides for an interest rate of LIBOR plus 2.75%, and
matures on March 1, 2004. As of April 30, 2003, the Company's outstanding
balance on the revolving credit facility was $3,401,000. The average
interest rate for the revolving credit facilities in the first quarter 2003
was 3.79%. As of April 30, 2003, the Company had entered into approximately
$500,000 of leases for mobile equipment under the new $2,000,000 equipment
line.


A summary of outstanding debt at the dates indicated is as follows:
(In thousands of dollars)



MARCH 31, DECEMBER 31,
2003 2002
------------ ------------

Term loan $ 40,000 40,833
Revolving credit facility 3,401 1,200
------------ ------------
Subtotal 43,401 42,033
Less current installments 6,734 4,533
------------ ------------
Debt, excluding current
installments $ 36,667 37,500
============ ============





Page 7 of 13



ITEM 2: MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS



FORWARD-LOOKING STATEMENTS. Any statements contained in this 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," "anticipate," and "project."
The Company undertakes no obligation to publicly update or revise any
forward-looking statements. The Company cautions 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 in the Company's discretion; (ii) the Company's
plans and results of operations will be affected by its ability to manage its
growth and modernization; (iii) the Company's ability to meet short-term and
long-term liquidity demands; (iv) inclement weather conditions; (v) increased
fuel costs; (vi) unanticipated delays or additional cost overruns in completing
current or planned construction projects; (vii) reduced demand for the Company's
products; and (viii) other risks and uncertainties set forth below or indicated
from time to time in the Company's filings with the Securities and Exchange
Commission, including the Company's Form 10-K for the fiscal year ended December
31, 2002.




LIQUIDITY AND CAPITAL RESOURCES


Net cash provided by operations was $936,000 for the three months ended
March 31, 2003, compared to $156,000 for the three months ended March 31, 2002.
The $780,000 improvement was the result of a $200,000 smaller loss in the first
quarter 2003 compared to the prior year and changes in working capital.


The Company invested $1,798,000 in capital expenditures in the first three
months 2003, compared to $1,477,000 in the same period last year. The increase
in capital expenditures was primarily due to the erection of a 5,000-ton
pulverized limestone storage facility at the Company's Texas operations, which
will enhance customer service. The Company expects to complete the new storage
facility in the second quarter.


Net cash provided by financing activities was $1,223,000 in the first three
months 2003, primarily from $2,201,000 of draws on the Company's revolving
credit facility, partially offset by $833,000 repayment of debt and $145,000
payment of cash dividends. Financing activities provided $769,000 net cash in
the first three months 2002, primarily from $1,750,000 of draws on the Company's
revolving credit facility, partially offset by $833,000 repayment of debt and
$148,000 payment of cash dividends.


On March 3, 2003, the Company entered into a Loan and Security Agreement
with another bank for a new $5,000,000 revolving credit facility to replace the
prior facility. In addition, the Company obtained a new $2,000,000 equipment
line of credit (available for financing or leasing large mobile equipment used
in its operations) from the same bank. The new revolving credit facility is
secured by the Company's accounts receivable and inventories, provides for an
interest rate of LIBOR plus 2.75%,



Page 8 of 13


and matures on March 1, 2004. As of April 30, 2003, the Company's outstanding
balance on the revolving credit facility was $3,401,000. The average interest
rate for the revolving credit facilities in the first quarter 2003 was 3.79%. As
of April 30, 2003, the Company had entered into approximately $500,000 of leases
for mobile equipment under the new $2,000,000 equipment line. The Company
believes that funds generated from operations and amounts still available under
the revolving credit facility will be sufficient to meet the Company's liquidity
and ongoing capital needs for the year.


The Arkansas modernization and expansion project commenced with ground
breaking in November 1999 and is expected to be completed in two phases. Phase I
involved the redevelopment of the quarry plant, rebuilding of the railroad to
standard gauge, the purchase of a facility to establish an out-of-state terminal
in Shreveport, Louisiana, the installation of a rotary kiln with preheater, and
increased product storage and loading capacity. The kiln in Phase I produced its
first lime in the fourth quarter 2000, which continues to be of excellent
quality and well received by customers. The Company completed Phase I in the
second quarter 2001.


The total cost of Phase I was approximately $33,000,000. The $33,000,000
includes $1,800,000 of costs associated with the pre-building of certain
facilities for Phase II of the Arkansas project and the purchase of, but not all
of the improvements to, the out-of-state terminal in Shreveport, Louisiana.


Phase II of the Arkansas project will further expand the plant's capacity
through the installation of a second kiln with additional storage capacity, and
includes the completion of the out-of-state terminal in Shreveport, Louisiana
for distribution of the Company's products. The estimated additional cost to
complete Phase II is approximately $16,000,000. The Company plans to proceed
with Phase II at the optimum time based on its future operating results, market
demand, financing and the ability to secure competitive construction bids. As
part of the financing of Phase II, the Company may decide to incur additional
debt or issue additional equity securities or both. Recently, the Company has
engaged an investment banking firm to advise it on possible financing
alternatives.


The Company is not contractually committed to any planned capital
expenditures until actual orders are placed for equipment. As of March 31, 2003,
the Company was contractually obligated for approximately $200,000 to complete
the pulverized limestone storage facility at the Company's Texas plant.

As of April 30, 2003, the Company had $43,124,000 in total debt
outstanding.



RESULTS OF OPERATIONS

Revenues increased to $9,556,000 in the first quarter 2003 from $8,977,000
in the first quarter 2002, an increase of $579,000, or 6.4%. This primarily
resulted from a 4.9% increase in product sales and revenues from natural gas
surcharges discussed below.

The Company's gross profit was $1,749,000 for the first quarter 2003, compared
to $1,837,000 for the first quarter 2002, a 4.8% decrease. Gross profit margin
as a percentage of revenues for the first quarter 2003 decreased to 18.3% from
20.5% in first quarter 2002. Gross profit and gross profit margins declined in
the 2003 quarter primarily due to increased natural gas costs. Also, a winter
ice storm in Texas caused the loss of approximately two days of sales and a
natural gas curtailment to the Company's Texas plant that resulted in reduced
production levels. The total negative price variance for natural gas was
approximately $400,000 compared to the first quarter last year. In early March,
the Company implemented natural gas surcharges on pulverized limestone products
that offset approximately $150,000 of the increased natural gas costs incurred
during the quarter.



Page 9 of 13




Although natural gas prices have declined from their highs during the
quarter, they continue to exceed 2002 price levels. Due to lower domestic
inventories of natural gas, the Company expects prices to remain higher than in
the previous year. Therefore, the Company intends to continue the natural gas
surcharges on pulverized limestone products in a continued effort to offset most
of the increased costs. Production of pulverized limestone products accounted
for approximately 85% of the Company's natural gas usage during the first
quarter 2003.

Selling, general and administrative expenses ("SG&A") increased by
$101,000, or 10.6%, to $1,059,000 in the first quarter 2003, as compared to
$958,000 in the first quarter 2002. The increase was primarily attributable to
increases in legal and audit fees, insurance costs, salaries and employee
benefits. As a percentage of sales, SG&A was 11.1% in the first quarter 2003, as
compared to 10.7% in the comparable 2002 period.

Interest expense in the first quarter 2003 was $1,021,000, compared to
$1,114,000, net for the first quarter 2002, primarily resulting from the
$3,333,000 repayment on the Loan over the last 12 months.


Other, net was $12,000 income in the first quarter 2003, as compared to
$378,000 expense in the first quarter 2002. Other, net in the 2003 quarter
consisted of interest, other income and $100,000 of embezzlement-related
recoveries, partially offset by $81,000 of embezzlement-related costs. In the
first quarter 2002, $376,000 of embezzlement-related costs was the primary other
expense.


The Company reported a net loss of $271,000 ($0.05 per share) during the
first quarter 2003, compared to a net loss of $471,000 ($0.08 per share) during
the first quarter 2002.


ITEM 3: QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK


Not Applicable.


ITEM 4: CONTROLS AND PROCEDURES


Within 90 days prior to the filing of this report, an evaluation of the
effectiveness of the design and operation of the Company's disclosure controls
and procedures was performed under the supervision and with the participation of
the Company's management, including the Chief Executive Officer ("CEO") and the
Chief Financial Officer ("CFO"). Based on that evaluation, the CEO and CFO
concluded that the Company's disclosure controls and procedures were effective.
There have been no significant changes in the Company's internal controls or in
other factors that could significantly affect internal controls subsequent to
the date of the most recent evaluation of internal controls.


Page 10 of 13



PART II. OTHER INFORMATION






ITEM 6: EXHIBITS AND REPORTS ON FORM 8-K

a. Exhibits:

99(a) Section 906 Certification by the Chief Executive Officer

99(b) Section 906 Certification by the Chief Financial Officer

b. Reports on Form 8-K: None





SIGNATURES


Pursuant to the requirements 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.



May 8, 2003 By: /s/ Timothy W. Byrne
--------------------------------------------
Timothy W. Byrne
President and Chief Executive Officer
(Principal Executive Officer)


May 8, 2003 By: /s/ M. Michael Owens
--------------------------------------------
M. Michael Owens
Vice President and Chief Financial Officer
(Principal Financial and Accounting Officer)

I, Timothy W. Byrne, certify that:

1. I have reviewed this quarterly report on Form 10-Q of United States Lime &
Minerals, Inc.;

2. Based on my knowledge, this quarterly report does not contain any untrue
statement of a material fact or omit to state a material fact necessary to
make the statements made, in light of the circumstances under which such
statements were made, not misleading with respect to the period covered by
this quarterly report;

3. Based on my knowledge, the financial statements, and other financial
information included in this quarterly report, fairly present in all
material respects the financial condition, results of operations and cash
flows of the registrant as of, and for, the periods presented in this
quarterly report;



Page 11 of 13


4. The registrant's other certifying officer and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined
in Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:

a) designed such disclosure controls and procedures to ensure that
material information relating to the registrant, including its
consolidated subsidiaries, is made known to us by others within those
entities, particularly during the period in which this quarterly
report is being prepared;

b) evaluated the effectiveness of the registrant's disclosure controls
and procedures as of a date within 90 days prior to the filing date of
this quarterly report (the "Evaluation Date"); and

c) presented in this quarterly report our conclusions about the
effectiveness of the disclosure controls and procedures based on our
evaluation as of the Evaluation Date;

5. The registrant's other certifying officer and I have disclosed, based on
our most recent evaluation, to the registrant's auditors and the audit
committee of the registrant's board of directors (or persons performing the
equivalent function):

a) all significant deficiencies in the design or operation of internal
controls which could adversely affect the registrant's ability to
record, process, summarize and report financial data and have
identified for the registrant's auditors any material weaknesses in
internal controls; and

b) any fraud, whether or not material, that involves management or other
employees who have a significant role in the registrant's internal
controls; and

6. The registrant's other certifying officer and I have indicated in this
quarterly report whether or not there were significant changes in internal
controls or in other factors that could significantly affect internal
controls subsequent to the date of our most recent evaluation, including
any corrective actions with regard to significant deficiencies and material
weaknesses.



Dated: May 8, 2003 /s/ Timothy W. Byrne
------------------------------------
Timothy W. Byrne
Chief Executive Officer

I, M. Michael Owens, certify that:

1. I have reviewed this quarterly report on Form 10-Q of United States Lime &
Minerals, Inc.;

2. Based on my knowledge, this quarterly report does not contain any untrue
statement of a material fact or omit to state a material fact necessary to
make the statements made, in light of the circumstances under which such
statements were made, not misleading with respect to the period covered by
this quarterly report;



Page 12 of 13


3. Based on my knowledge, the financial statements, and other financial
information included in this quarterly report, fairly present in all
material respects the financial condition, results of operations and cash
flows of the registrant as of, and for, the periods presented in this
quarterly report;

4. The registrant's other certifying officer and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined
in Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:

d) designed such disclosure controls and procedures to ensure that
material information relating to the registrant, including its
consolidated subsidiaries, is made known to us by others within those
entities, particularly during the period in which this quarterly
report is being prepared;

e) evaluated the effectiveness of the registrant's disclosure controls
and procedures as of a date within 90 days prior to the filing date of
this quarterly report (the "Evaluation Date"); and

f) presented in this quarterly report our conclusions about the
effectiveness of the disclosure controls and procedures based on our
evaluation as of the Evaluation Date;

5. The registrant's other certifying officer and I have disclosed, based on
our most recent evaluation, to the registrant's auditors and the audit
committee of the registrant's board of directors (or persons performing the
equivalent function):

c) all significant deficiencies in the design or operation of internal
controls which could adversely affect the registrant's ability to
record, process, summarize and report financial data and have
identified for the registrant's auditors any material weaknesses in
internal controls; and

d) any fraud, whether or not material, that involves management or other
employees who have a significant role in the registrant's internal
controls; and

6. The registrant's other certifying officer and I have indicated in this
quarterly report whether or not there were significant changes in internal
controls or in other factors that could significantly affect internal
controls subsequent to the date of our most recent evaluation, including
any corrective actions with regard to significant deficiencies and material
weaknesses.




Dated: May 8, 2003 /s/ M. Michael Owens
---------------------------------
M. Michael Owens
Chief Financial Officer





Page 13 of 13





UNITED STATES LIME & MINERALS, INC.


Quarterly Report on Form 10-Q
Quarter Ended
March 31, 2003

Index to Exhibits



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

99(a) Section 906 Certification by the Chief Executive Officer

99(b) Section 906 Certification by the Chief Financial Officer