EXHIBIT 99.2
 
                            GENERAL RE CORPORATION
 
                            PROXY FOR COMMON STOCK
                      SOLICITED BY THE BOARD OF DIRECTORS
                    FOR THE SPECIAL MEETING OF STOCKHOLDERS
 
                              SEPTEMBER 18, 1998
 
  The undersigned stockholder of General Re Corporation ("General Re") hereby
appoints Ronald E. Ferguson, James E. Gustafson, Charles F. Barr, Elizabeth A.
Monrad and Robert D. Graham, as attorneys, agents, and proxies of the
undersigned, with full power of substitution in each of them, to vote, in the
name and on behalf of the undersigned at the Special Meeting of Stockholders
(the "Special Meeting") of General Re to be held on September 18, 1998 at
10:00 a.m., at Financial Centre, 695 East Main Street, Stamford, Connecticut,
and at all adjournments thereof, all of the shares of Common Stock of General
Re which the undersigned would be entitled to vote if personally present, with
all powers the undersigned would possess if personally present.
 
  PROPOSAL: To approve and adopt the Agreement and Plan of Mergers dated June
19, 1998 (the "Merger Agreement") by and between General Re and Berkshire
Hathaway Inc., a Delaware corporation ("Berkshire"), and to approve the
transactions contemplated thereby, including either the merger of General Re
with Steven Merger Sub Inc., a Delaware corporation ("Merger Sub B"), pursuant
to a Plan of Merger between General Re, NBH, Inc., a Delaware corporation, and
Merger Sub B, or the Alternative Transaction (as defined in the Proxy
Statement) involving the merger of General Re with a subsidiary of Berkshire
pursuant to a plan of Merger between General Re, Berkshire and such
subsidiary.
 

                                                 
             [_] FOR                [_] AGAINST              [_] ABSTAIN

 
  The undersigned hereby acknowledged receipt of the Notice of Special Meeting
and the Joint Proxy Statement/Prospectus (the "Proxy Statement") dated August
13, 1998 relating to the Special Meeting.
 
  ALL SHARES WILL BE VOTED AS SPECIFIED. IF THE PROXY IS SIGNED AND SENT BUT
NO CHOICE IS SPECIFIED, THE SHARES WILL BE VOTED FOR APPROVAL AND ADOPTION OF
THE MERGER AGREEMENT. SHARES WILL BE VOTED AT THE DISCRETION OF THE PROXY
HOLDERS AS TO ANY OTHER MATTER THAT MAY PROPERLY COME BEFORE THE MEETING FOR
WHICH DISCRETIONARY AUTHORITY MAY BE GRANTED. PROXIES NOT RECEIVED OR VOTES TO
ABSTAIN WILL BE TREATED AS VOTES AGAINST THE PROPOSALS.
 
  Any of said proxies or their substitutes who shall be present and act, or if
only one shall attend, then that one, shall have and may exercise all the
powers of said proxies hereunder.
 
                                          Dated: _______________________ , 1998
 
                                          _____________________________________
                                                       (SIGNATURE)
 
                                          _____________________________________
                                                (JOINT OWNER'S SIGNATURE)
 
                                          Please sign exactly as your name
                                          appears. When signing as an
                                          attorney, guardian, executor,
                                          administrator, or trustee, please
                                          give title. If the signer is a
                                          corporation, please give the full
                                          corporate name, and sign by a duly
                                          authorized officer showing the
                                          officer's title. EACH joint owner is
                                          required to sign.
 
                PLEASE EXECUTE AND RETURN THIS PROXY PROMPTLY.
                     YOUR COOPERATION WILL BE APPRECIATED.