FORM 4

  o  Check this box if no longer subject to Section 16.  Form 4 or Form 5 obligations may continue.
See Instruction 1(b).

(Print or Type Responses)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section
17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the
Investment Company Act of 1940

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 1. Name and Address of Reporting Person *

(Last)            (First)              (Middle)

(Street)

(City)       (State)          (Zip)

 2. Issuer Name and Ticker
    or Trading Symbol

 3. I.R.S. Identification
    Number of Reporting
    Person, if an entity
    (voluntary)

 4. Statement for
    Month/Day/Year

 5. If Amendment, Date of
    Original (Month/Day/Year)

 6. Relationship of Reporting Person(s) to Issuer

     (Check all applicable)

      Director

      Officer (give title below)

      10% Owner

 X(1) Other (specify below)

 7. Individual or Joint/Group
     Filing (Check Applicable Line)

  X  Form filed by One Reporting Person

      Form filed by More than One Reporting Person

1. Title of Security
(Instr. 3)

2. Transaction Date (Month/Day/
Year)

2A. Deemed Execution Date, if any (Month/Day/
Year)

3. Transaction Code
(Instr. 8)

4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)

5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)

6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)

7. Nature of Indirect Beneficial Ownership
(Instr. 4)

Code

V

Amount

(A) or (D)

Price

Common Stock

2/20/2003

P

25,000

A

19.25

Common Stock

2/20/2003

P

25,000

A

19.30

150,000

D

Table II — Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date
(Month/Day/
Year)

3A. Deemed Execution Date, if any (Month/Day/
Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)

6. Date Exercisable and Expiration Date
(Month/Day/Year)

7. Title and Amount of Underlying Securities
(Instr. 3 and 4)

8. Price of Derivative Security
(Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)

10. Ownership Form of Derivative Securities: Direct (D) or Indirect (I)
(Instr. 4)

11. Nature of Indirect Beneficial Ownership
(Instr. 4)

Code

V

(A)

(D)

Date
Exercisable

Expiration
Date

Title

Amount or Number of Shares

Explanation of Responses:

(1) The Reporting Person may be deemed to be a member of a Section 13(d) group that beneficially owns more than 10% of the issuer's outstanding Common Stock.  The Reporting Person disclaims beneficial ownership of all securities other than those reported above, and this report shall not be deemed an admission that such a group exists or that the Reporting Person is the beneficial owner of the securities of such group for purposes of Section 16 or for any other purpose.

** Signature of Reporting Person

Date

Attorney-in-fact.

Duly authorized under Special Power of Attorney appointing Michael Larson attorney-in-fact, dated March 14, 2001, by and on behalf of William H. Gates III, filed as Exhibit B to Cascade Investment’s Amendment No. 1 to Schedule 13D with respect to Pan American Silver Corp. on March 19, 2001, SEC File No. 005-52919, and incorporated by reference herein.