SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13G
                               (Amendment No. 1)*

                    Under the Securities Exchange Act of 1934

                         International Coal Group, Inc.
                                (Name of Issuer)

                                  Common Stock
                         (Title of Class of Securities)

                                    45928H106
                                 (CUSIP Number)

                                DECEMBER 31, 2007
             (Date of Event which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

     [X]:  Rule 13d-1(b)
           Rule 13d-1(c)
           Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).



--------------------------------------------------------------------------------
Cusip No. 45928H106                     13G                   Page 2 of 20 Pages
--------------------------------------------------------------------------------
1    Names of Reporting Person/I.R.S. Identification Nos. of Above Persons
     (Entities Only)
          V. PREM WATSA
--------------------------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
          (a)  [ ]
          (b)  [X]
--------------------------------------------------------------------------------
3    SEC USE ONLY
--------------------------------------------------------------------------------
4    CITIZENSHIP OR PLACE OF ORGANIZATION
          CANADIAN
--------------------------------------------------------------------------------
NUMBER OF SHARES   5    SOLE VOTING POWER
  BENEFICIALLY     -------------------------------------------------------------
  OWNED BY EACH    6    SHARED VOTING POWER
   REPORTING            21,055,000
                   -------------------------------------------------------------
  PERSON WITH      7    SOLE DISPOSITIVE POWER
                   -------------------------------------------------------------
                   8    SHARED DISPOSITIVE POWER
                        21,055,000
--------------------------------------------------------------------------------
9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     21,055,000
--------------------------------------------------------------------------------
10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
--------------------------------------------------------------------------------
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
     13.8%
--------------------------------------------------------------------------------
12   TYPE OF REPORTING PERSON
     IN
--------------------------------------------------------------------------------


                                        2



--------------------------------------------------------------------------------
Cusip No. 45928H106                     13G                   Page 3 of 20 Pages
--------------------------------------------------------------------------------
1    Names of Reporting Person/I.R.S. Identification Nos. of Above Persons
     (Entities Only)
          1109519 ONTARIO LIMITED
--------------------------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
          (a)  [ ]
          (b)  [X]
--------------------------------------------------------------------------------
3    SEC USE ONLY
--------------------------------------------------------------------------------
4    CITIZENSHIP OR PLACE OF ORGANIZATION
          ONTARIO, CANADA
--------------------------------------------------------------------------------
NUMBER OF SHARES   5    SOLE VOTING POWER
  BENEFICIALLY     -------------------------------------------------------------
  OWNED BY EACH    6    SHARED VOTING POWER
   REPORTING            21,055,000
                   -------------------------------------------------------------
  PERSON WITH      7    SOLE DISPOSITIVE POWER
                   -------------------------------------------------------------
                   8    SHARED DISPOSITIVE POWER
                        21,055,000
--------------------------------------------------------------------------------
9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     21,055,000
--------------------------------------------------------------------------------
10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
--------------------------------------------------------------------------------
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
     13.8%
--------------------------------------------------------------------------------
12   TYPE OF REPORTING PERSON
     CO
--------------------------------------------------------------------------------


                                        3



--------------------------------------------------------------------------------
Cusip No. 45928H106                     13G                   Page 4 of 20 Pages
--------------------------------------------------------------------------------
1    Names of Reporting Person/I.R.S. Identification Nos. of Above Persons
     (Entities Only)
          THE SIXTY TWO INVESTMENT COMPANY LIMITED
--------------------------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
          (a)  [ ]
          (b)  [X]
--------------------------------------------------------------------------------
3    SEC USE ONLY
--------------------------------------------------------------------------------
4    CITIZENSHIP OR PLACE OF ORGANIZATION
          BRITISH COLUMBIA, CANADA
--------------------------------------------------------------------------------
NUMBER OF SHARES   5    SOLE VOTING POWER
  BENEFICIALLY     -------------------------------------------------------------
  OWNED BY EACH    6    SHARED VOTING POWER
   REPORTING            21,055,000
                   -------------------------------------------------------------
  PERSON WITH      7    SOLE DISPOSITIVE POWER
                   -------------------------------------------------------------
                   8    SHARED DISPOSITIVE POWER
                        21,055,000
--------------------------------------------------------------------------------
9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     21,055,000
--------------------------------------------------------------------------------
10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
--------------------------------------------------------------------------------
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
     13.8%
--------------------------------------------------------------------------------
12   TYPE OF REPORTING PERSON
     CO
--------------------------------------------------------------------------------


                                        4



--------------------------------------------------------------------------------
Cusip No. 45928H106                     13G                   Page 5 of 20 Pages
--------------------------------------------------------------------------------
1    Names of Reporting Person/I.R.S. Identification Nos. of Above Persons
     (Entities Only)
          810679 ONTARIO LIMITED
--------------------------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
          (a)  [ ]
          (b)  [X]
--------------------------------------------------------------------------------
3    SEC USE ONLY
--------------------------------------------------------------------------------
4    CITIZENSHIP OR PLACE OF ORGANIZATION
          ONTARIO, CANADA
--------------------------------------------------------------------------------
NUMBER OF SHARES   5    SOLE VOTING POWER
  BENEFICIALLY     -------------------------------------------------------------
  OWNED BY EACH    6    SHARED VOTING POWER
   REPORTING            21,055,000
                   -------------------------------------------------------------
  PERSON WITH      7    SOLE DISPOSITIVE POWER
                   -------------------------------------------------------------
                   8    SHARED DISPOSITIVE POWER
                        21,055,000
--------------------------------------------------------------------------------
9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     21,055,000
--------------------------------------------------------------------------------
10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
--------------------------------------------------------------------------------
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
     13.8%
--------------------------------------------------------------------------------
12   TYPE OF REPORTING PERSON
     CO
--------------------------------------------------------------------------------


                                        5



--------------------------------------------------------------------------------
Cusip No. 45928H106                     13G                   Page 6 of 20 Pages
--------------------------------------------------------------------------------
1    Names of Reporting Person/I.R.S. Identification Nos. of Above Persons
     (Entities Only)
          FAIRFAX FINANCIAL HOLDINGS LIMITED
--------------------------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
          (a)  [ ]
          (b)  [X]
--------------------------------------------------------------------------------
3    SEC USE ONLY
--------------------------------------------------------------------------------
4    CITIZENSHIP OR PLACE OF ORGANIZATION
          CANADA
--------------------------------------------------------------------------------
NUMBER OF SHARES   5    SOLE VOTING POWER
  BENEFICIALLY     -------------------------------------------------------------
  OWNED BY EACH    6    SHARED VOTING POWER
   REPORTING            21,055,000
                   -------------------------------------------------------------
  PERSON WITH      7    SOLE DISPOSITIVE POWER
                   -------------------------------------------------------------
                   8    SHARED DISPOSITIVE POWER
                        21,055,000
--------------------------------------------------------------------------------
9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     21,055,000
--------------------------------------------------------------------------------
10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
--------------------------------------------------------------------------------
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
     13.8%
--------------------------------------------------------------------------------
12   TYPE OF REPORTING PERSON
     CO
--------------------------------------------------------------------------------


                                        6



--------------------------------------------------------------------------------
Cusip No. 45928H106                     13G                   Page 7 of 20 Pages
--------------------------------------------------------------------------------
1    Names of Reporting Person/I.R.S. Identification Nos. of Above Persons
     (Entities Only)
          ODYSSEY RE HOLDINGS CORP.
--------------------------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
          (a)  [ ]
          (b)  [X]
--------------------------------------------------------------------------------
3    SEC USE ONLY
--------------------------------------------------------------------------------
4    CITIZENSHIP OR PLACE OF ORGANIZATION
          DELAWARE
--------------------------------------------------------------------------------
NUMBER OF SHARES   5    SOLE VOTING POWER
  BENEFICIALLY     -------------------------------------------------------------
  OWNED BY EACH    6    SHARED VOTING POWER
   REPORTING            10,230,763
                   -------------------------------------------------------------
  PERSON WITH      7    SOLE DISPOSITIVE POWER
                   -------------------------------------------------------------
                   8    SHARED DISPOSITIVE POWER
                        10,230,763
--------------------------------------------------------------------------------
9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     10,230,763
--------------------------------------------------------------------------------
10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
--------------------------------------------------------------------------------
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
     6.7%
--------------------------------------------------------------------------------
12   TYPE OF REPORTING PERSON
     CO
--------------------------------------------------------------------------------


                                        7



--------------------------------------------------------------------------------
Cusip No. 45928H106                     13G                   Page 8 of 20 Pages
--------------------------------------------------------------------------------
1    Names of Reporting Person/I.R.S. Identification Nos. of Above Persons
     (Entities Only)
          ODYSSEY AMERICA REINSURANCE CORPORATION
--------------------------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
          (a)  [ ]
          (b)  [X]
--------------------------------------------------------------------------------
3    SEC USE ONLY
--------------------------------------------------------------------------------
4    CITIZENSHIP OR PLACE OF ORGANIZATION
          CONNECTICUT
--------------------------------------------------------------------------------
NUMBER OF SHARES   5    SOLE VOTING POWER
  BENEFICIALLY     -------------------------------------------------------------
  OWNED BY EACH    6    SHARED VOTING POWER
   REPORTING            10,230,763
                   -------------------------------------------------------------
  PERSON WITH      7    SOLE DISPOSITIVE POWER
                   -------------------------------------------------------------
                   8    SHARED DISPOSITIVE POWER
                        10,230,763
--------------------------------------------------------------------------------
9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     10,230,763
--------------------------------------------------------------------------------
10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
--------------------------------------------------------------------------------
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
     6.7%
--------------------------------------------------------------------------------
12   TYPE OF REPORTING PERSON
     CO
--------------------------------------------------------------------------------


                                        8



ITEM 1.(A) NAME OF ISSUER:

International Coal Group, Inc.

ITEM 1(B)  ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

300 Corporate Center Drive, Scott Depot, West Virginia 25560

ITEM 2.(A) NAME OF PERSON FILING:

          This statement is being jointly filed by the following persons
(collectively, the "Reporting Persons"):

          1.   V. Prem Watsa, an individual;

          2.   1109519 Ontario Limited ("1109519"), a corporation incorporated
               under the laws of Ontario;

          3.   The Sixty Two Investment Company Limited ("Sixty Two"), a
               corporation incorporated under the laws of British Columbia;

          4.   810679 Ontario Limited ("810679"), a corporation incorporated
               under the laws of Ontario;

          5.   Fairfax Financial Holdings Limited ("Fairfax"), a corporation
               incorporated under the laws of Canada;

          6.   Odyssey Re Holdings Corp. ("OdysseyRe"), a corporation
               incorporated under the laws of Delaware; and

          7.   Odyssey America Reinsurance Corporation ("Odyssey America"), a
               corporation incorporated under the laws of Connecticut.

ITEM 2(B)  ADDRESS OF PRINCIPAL BUSINESS OFFICE:

          The addresses of the Reporting Persons are as follows:

          1.   Mr. Watsa's business address is 95 Wellington Street West, Suite
               800, Toronto, Ontario, Canada, M5J 2N7;

          2.   The principal business address and principal office address of
               1109519 is 95 Wellington Street West, Suite 800, Toronto,
               Ontario, Canada, M5J 2N7;

          3.   The principal business address and principal office address of
               Sixty Two is 1600 Cathedral Place, 925 West Georgia St.,
               Vancouver, British Columbia, Canada, V6C 3L3;


                                        9



          4.   The principal business address and principal office address of
               810679 is 95 Wellington Street West, Suite 800, Toronto, Ontario,
               Canada, M5J 2N7;

          5.   The principal business address and principal office address of
               Fairfax is 95 Wellington Street West, Suite 800, Toronto,
               Ontario, Canada, M5J 2N7;

          6.   The principal business address and principal office address of
               OdysseyRe is 300 First Stamford Place, Stamford, Connecticut
               06902; and

          7.   The principal business address and principal office address of
               Odyssey America is 300 First Stamford Place, Stamford,
               Connecticut 06902.

ITEM 2(C)  CITIZENSHIP:

V. Prem Watsa is a citizen of Canada.

ITEM 2(D)  TITLE OF CLASS OF SECURITIES:

Common Stock

ITEM 2(E)  CUSIP NUMBER:

45928H106


                                       10



ITEM 3.    IF THIS STATEMENT IS FILED PURSUANT TO RULE 13D-1(B), OR 13D-2(B) OR
           (C), CHECK WHETHER THE PERSON FILING IS A:

          (A) [ ]  Broker or Dealer registered under Section 15 of the Act
                   (15 U.S.C. 78o);

          (B) [ ]  Bank as defined in section 3(a)(6) of the Act
                   (15 U.S.C. 78c);

          (C) [ ]  Insurance Company as defined in section 3(a)(19) of the Act
                   (15 U.S.C. 78c);

          (D) [ ]  An Investment Company registered under section 8 of the
                   Investment Company Act of 1940 (15 U.S.C. 80a-8);

          (E) [ ]  An investment adviser in accordance with Section 240.13d-1(b)
                   (1)(ii)(E);

          (F) [ ]  An employee benefit plan or endowment fund in accordance with
                   Section 240.13d-1(b)(1)(ii)(F);

          (G) [ ]  A parent holding company or control person, in accordance
                   with Section 240.13d-1(b)(1)(ii)(G);

          (H) [ ]  A savings associations as defined in Section 3(b) of the
                   Federal Deposit Insurance Act (12 U.S.C. 1813);

          (I) [ ]  A church plan that is excluded from the definition of an
                   investment company under section 3(c)(14) of the Investment
                   Company Act of 1940 (15 U.S.C. 80a-3);

          (J) [X]  Group, in accordance with Section 240.13d-1(b)(1)(ii)(J).

Mr. Watsa, 1109519, Sixty Two and 810679 are filing this Schedule 13G under Rule
13d-1(b) pursuant to a no-action letter dated June 8, 1994 from the Commission
to Fairfax.

ITEM 4.    OWNERSHIP.

Based on the most recent information available, the aggregate number and
percentage of the shares of common stock (the "Shares") of International Coal
Group, Inc. ("ICG") that are beneficially owned by each of the Reporting Persons
is set forth in boxes 9 and 11 of the second part of the cover page to this
Schedule 13G, and such information is incorporated herein by reference.

The number of Shares as to which each of the Reporting Persons has sole voting
power, shared voting power, sole dispositive power and shared dispositive power
is set forth in boxes 5, 6, 7 and 8, respectively, on the second part of the
cover page to this Schedule 13G, and such information is incorporated herein by
reference.

Neither the filing of this Schedule 13G nor the information contained herein
shall be deemed to constitute an affirmation by V. Prem Watsa, 1109519, Sixty
Two, 810679, Fairfax, OdysseyRe


                                       11



or Odyssey America that such person is the beneficial owner of the Shares
referred to herein for purposes of Section 13(d) or 13(g) of the Securities
Exchange Act of 1934, as amended, or for any other purpose, and such beneficial
ownership is expressly disclaimed.

ITEM 5.    OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.

Not applicable

ITEM 6.    OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.

Not applicable

ITEM 7.    IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
           THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY.

Mr. Watsa, directly, and indirectly through 1109519, Sixty Two and 810679,
beneficially owns shares representing approximately 48.7% of the total votes
attached to all classes of shares of Fairfax. Fairfax indirectly owns a majority
of the outstanding shares of common stock of OdysseyRe. Odyssey America is a
wholly-owned subsidiary of OdysseyRe. United States Fire Insurance Company, The
North River Insurance Company and TIG Insurance Company are wholly-owned
subsidiaries of Fairfax. See Exhibit No. 1.

ITEM 8.    IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.

See attached Exhibit No. 2.

ITEM 9.    NOTICE OF DISSOLUTION OF GROUP.

Not applicable

ITEM 10.   CERTIFICATION.

By signing below I certify that, to the best of my knowledge and belief, the
securities referred to above were acquired and are held in the ordinary course
of business and were not acquired and are not held for the purpose of or with
the effect of changing or influencing control of the issuer of the securities
and were not acquired and are not held in connection with or as a participant in
any transaction having that purpose or effect.


                                       12



                                    SIGNATURE

          After reasonable inquiry and to the best of the undersigned's
knowledge and belief, the undersigned certifies that the information set forth
in this statement is true, complete and correct.

Dated: February 14, 2008                 V. Prem Watsa


                                         /s/ V. Prem Watsa
                                         ------------------------------


                                       13



                                    SIGNATURE

          After reasonable inquiry and to the best of the undersigned's
knowledge and belief, the undersigned certifies that the information set forth
in this statement is true, complete and correct.

Dated: February 14, 2008             1109519 Ontario Limited


                                     By: /s/ V. Prem Watsa
                                         ------------------------------
                                         Name: V. Prem Watsa
                                         Title: President


                                       14



                                    SIGNATURE

          After reasonable inquiry and to the best of the undersigned's
knowledge and belief, the undersigned certifies that the information set forth
in this statement is true, complete and correct.

Dated: February 14, 2008             The Sixty Two Investment Company Limited


                                     By: /s/ V. Prem Watsa
                                         ------------------------------
                                         Name: V. Prem Watsa
                                         Title: President


                                       15



                                    SIGNATURE

          After reasonable inquiry and to the best of the undersigned's
knowledge and belief, the undersigned certifies that the information set forth
in this statement is true, complete and correct.

Dated: February 14, 2008             810679 Ontario Limited


                                     By: /s/ V. Prem Watsa
                                         ------------------------------
                                         Name: V. Prem Watsa
                                         Title: President


                                       16



                                    SIGNATURE

          After reasonable inquiry and to the best of the undersigned's
knowledge and belief, the undersigned certifies that the information set forth
in this statement is true, complete and correct.

Dated: February 14, 2008             Fairfax Financial Holdings Limited


                                     By: /s/ Paul Rivett
                                         ------------------------------
                                         Name: Paul Rivett
                                         Title: Vice President


                                       17



                                    SIGNATURE

          After reasonable inquiry and to the best of the undersigned's
knowledge and belief, the undersigned certifies that the information set forth
in this statement is true, complete and correct.

Dated: February 14, 2008             Odyssey Re Holdings Corp.


                                     By: /s/ Donald L. Smith
                                         ------------------------------
                                         Name: Donald L. Smith
                                         Title: Senior Vice President


                                       18



                                    SIGNATURE

          After reasonable inquiry and to the best of the undersigned's
knowledge and belief, the undersigned certifies that the information set forth
in this statement is true, complete and correct.

Dated: February 14, 2008

                                     Odyssey America Reinsurance Corporation


                                     By: /s/ Donald L. Smith
                                         ------------------------------
                                         Name: Donald L. Smith
                                         Title: Senior Vice President


                                       19



                                  EXHIBIT INDEX

EXHIBIT NO.   DESCRIPTION
-----------   ---------------------------------------------------------------
1             Identification and classification of relevant subsidiaries.

2             Members of filing group.

3             Joint Filing Agreement dated as of February 14, 2008 among V.
              Prem Watsa, 1109519 Ontario Limited, The Sixty Two Investment
              Company Limited, 810679 Ontario Limited, Fairfax Financial
              Holdings Limited, Odyssey Re Holdings Corp. and Odyssey America
              Reinsurance Corporation.


                                       20