HORIZON MEDICAL PRODUCTS INC
SC 13D, 1998-10-05
MEDICAL, DENTAL & HOSPITAL EQUIPMENT & SUPPLIES
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 1)*

                         Horizon Medical Products, Inc.
                     ---------------------------------------
                                (Name of Issuer)

                         Common Stock ($.001 par value)
                     ---------------------------------------
                         (Title of Class of Securities)

                                   439909 10 5
                                -----------------
                                 (CUSIP Number)

         Mr. Graeme P. Denison, Caledonia Investments plc. Cayzer House,
           1 Thomas More St., London England E1 9AR (44-171-481-4343)
- --------------------------------------------------------------------------------
   (Name, Address and Telephone Number of Person Authorized to Receive Notice
                              and Communications)

                               September 24, 1998
                               ------------------
               (Date of Event which Requires Filing of Statement)

     If the filing  person has  previously  filed a statement on Schedule 13G to
     report the  acquisition  that is the subject of this  Schedule  13D, and is
     filing  this  schedule  because  of ss.ss.  240.13d-1(e),  240.13d-1(f)  or
     240.13d-1(g), check the following box.

     NOTE:  Schedules  filed in paper format shall include a signed original and
     five copies of the Schedule,  including all exhibits.  See ss. 240.13d-7(b)
     for other parties to whom copies are to be sent.

     *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 on 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).

     SEC 1746



                                 
<PAGE>


- -------------------------------------------------------------------------------
CUSIP NO. 439909 10 5                13D                   Page 2 of 14 Pages
- -------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
1)       NAME OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (entities only)
         Tapir Investments (Bahamas) Ltd.

- --------------------------------------------------------------------------------
2)       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
         (See Instructions)

                                                                     (a)[ ]
                                                                     (b)[ ]
- --------------------------------------------------------------------------------
3)       SEC USE ONLY

- --------------------------------------------------------------------------------
4)       SOURCE OF FUNDS (See Instructions)
         WC

- --------------------------------------------------------------------------------
5)       CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEMS 2(d) or 2(e)

- --------------------------------------------------------------------------------
6)       CITIZENSHIP OR PLACE OF ORGANIZATION

         The Bahamas

- --------------------------------------------------------------------------------
                         7)      SOLE VOTING POWER
         NUMBER OF

         SHARES                  -0-
                         -------------------------------------------------------
         BENEFICIALLY    8)      SHARED VOTING POWER
         
         OWNED BY              1,494,416
                         -------------------------------------------------------
         EACH            9)      SOLE DISPOSITIVE POWER

         REPORTING       
                                 -0-
         PERSON          -------------------------------------------------------
                         10)     SHARED DISPOSITIVE POWER
         WITH                       

                               1,494,416
                         -------------------------------------------------------
- --------------------------------------------------------------------------------
11)      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
           1,494,416
- --------------------------------------------------------------------------------
12)      CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES 
         (See Instructions)

- --------------------------------------------------------------------------------
13)      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW  (11)

           11.2%
- --------------------------------------------------------------------------------
14)      TYPE OF REPORTING PERSON (See Instructions)

           CO
- --------------------------------------------------------------------------------



                                 
<PAGE>


- -------------------------------------------------------------------------------
CUSIP NO. 439909 10 5                13D                   Page 3 of 14 Pages
- -------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
1)       NAME OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (entities only)
         Caledonia Investments plc

- --------------------------------------------------------------------------------
2)       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
         (See Instructions)

                                                                     (a)[ ]
                                                                     (b)[ ]
- --------------------------------------------------------------------------------
3)       SEC USE ONLY

- --------------------------------------------------------------------------------
4)       SOURCE OF FUNDS (See Instructions)
         Not applicable

- --------------------------------------------------------------------------------
5)       CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEMS 2(d) or 2(e)

- --------------------------------------------------------------------------------
6)       CITIZENSHIP OR PLACE OF ORGANIZATION

         England

- --------------------------------------------------------------------------------
                         7)      SOLE VOTING POWER
         NUMBER OF

         SHARES                  -0-
                         -------------------------------------------------------
         BENEFICIALLY    8)      SHARED VOTING POWER
         
         OWNED BY              1,494,416
                         -------------------------------------------------------
         EACH            9)      SOLE DISPOSITIVE POWER

         REPORTING       
                                 -0-
         PERSON          -------------------------------------------------------
                         10)     SHARED DISPOSITIVE POWER
         WITH                       

                               1,494,416
                         -------------------------------------------------------
- --------------------------------------------------------------------------------
11)      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
           1,494,416
- --------------------------------------------------------------------------------
12)      CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES 
         (See Instructions)

- --------------------------------------------------------------------------------
13)      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW  (11)
           11.2%
- --------------------------------------------------------------------------------
14)      TYPE OF REPORTING PERSON (See Instructions)

           CO
- --------------------------------------------------------------------------------




<PAGE>
- -------------------------------------------------------------------------------
CUSIP NO. 439909 10 5                13D                   Page 4 of 14 Pages
- -------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
1)       NAME OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (entities only)
         The Cayzer Trust Company Limited

- --------------------------------------------------------------------------------
2)       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
         (See Instructions)

                                                                     (a)[ ]
                                                                     (b)[ ]
- --------------------------------------------------------------------------------
3)       SEC USE ONLY

- --------------------------------------------------------------------------------
4)       SOURCE OF FUNDS (See Instructions)
         Not applicable

- --------------------------------------------------------------------------------
5)       CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEMS 2(d) or 2(e)

- --------------------------------------------------------------------------------
6)       CITIZENSHIP OR PLACE OF ORGANIZATION

         England

- --------------------------------------------------------------------------------
                         7)      SOLE VOTING POWER
         NUMBER OF

         SHARES                  -0-
                         -------------------------------------------------------
         BENEFICIALLY    8)      SHARED VOTING POWER
         
         OWNED BY              1,494,416
                         -------------------------------------------------------
         EACH            9)      SOLE DISPOSITIVE POWER

         REPORTING       
                                 -0-
         PERSON          -------------------------------------------------------
                         10)     SHARED DISPOSITIVE POWER
         WITH                       

                               1,494,416
                         -------------------------------------------------------
- --------------------------------------------------------------------------------
11)      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
           1,494,416
- --------------------------------------------------------------------------------
12)      CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES 
         (See Instructions)

- --------------------------------------------------------------------------------
13)      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW  (11)
           11.2%
- --------------------------------------------------------------------------------
14)      TYPE OF REPORTING PERSON (See Instructions)

           CO
- --------------------------------------------------------------------------------



<PAGE>


- -------------------------------------------------------------------------------
CUSIP NO. 439909 10 5                13D                   Page 5 of 14 Pages
- -------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
1)       NAME OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (entities only)
         Sterling Industries PLC

- --------------------------------------------------------------------------------
2)       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
         (See Instructions)

                                                                     (a)[ ]
                                                                     (b)[ ]
- --------------------------------------------------------------------------------
3)       SEC USE ONLY

- --------------------------------------------------------------------------------
4)       SOURCE OF FUNDS (See Instructions)
         Not applicable

- --------------------------------------------------------------------------------
5)       CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
         TO ITEMS 2(d) or 2(e)

- --------------------------------------------------------------------------------
6)       CITIZENSHIP OR PLACE OF ORGANIZATION

         England

- --------------------------------------------------------------------------------
                         7)      SOLE VOTING POWER
         NUMBER OF

         SHARES                  -0-
                         -------------------------------------------------------
         BENEFICIALLY    8)      SHARED VOTING POWER
         
         OWNED BY              1,494,416
                         -------------------------------------------------------
         EACH            9)      SOLE DISPOSITIVE POWER

         REPORTING       
                                 -0-
         PERSON          -------------------------------------------------------
                         10)     SHARED DISPOSITIVE POWER
         WITH                       

                               1,494,416
                         -------------------------------------------------------
- --------------------------------------------------------------------------------
11)      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
           1,494,416
- --------------------------------------------------------------------------------
12)      CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES 
         (See Instructions)

- --------------------------------------------------------------------------------
13)      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW  (11)
           11.2%
- --------------------------------------------------------------------------------
14)      TYPE OF REPORTING PERSON (See Instructions)

           CO
- --------------------------------------------------------------------------------



<PAGE>


CUSIP No. 439909 10 5                                           Page 6 of 14

                                  SCHEDULE 13D
            UNDER THE SECURITIES AND EXCHANGE COMMISSION ACT OF 1934

ITEM 1.  SECURITY AND ISSUER

          This Statement  relates to the Common Stock ($.001 par value) ("Common
Stock")  of  Horizon  Medical  Products,  Inc.  (the  "Issuer").  The  principal
executive offices of the Issuer are located at One Horizon Way, P.O. Drawer 627,
Manchester, Georgia 31816.

ITEM 2.  IDENTITY AND BACKGROUND

         The persons  filing  this  Statement  (the  "Reporting  Persons"),  the
persons  enumerated in Instruction C of Schedule 13D (the "Additional  Persons")
and  where  applicable,  their  respective  places of  organization,  directors,
executive  officers and controlling  persons,  and the information in respect of
such persons, are as follows:

         (A) This  Statement is filed by (i) Tapir  Investments  (Bahamas)  Ltd.
("Tapir")  as the  direct  beneficial  owner  of  the  Common  Stock  previously
referenced on pages 2 through 5; (ii) Caledonia Investments plc ("Caledonia") as
an indirect  beneficial  owner of this Common Stock given that  Caledonia is the
holder of all of the  outstanding  capital stock of Tapir;  and (iii) The Cayzer
Trust Company Limited ("Cayzer Trust") and Sterling  Industries PLC ("Sterling")
as indirect  beneficial  owners of this Common Stock given that their respective
direct holdings of the securities of Caledonia  represent  indirect  holdings of
the  stock  of  Tapir  (collectively  all  these  entities  are  the  "Reporting
Persons").

         Tapir is the direct  beneficial  holder of  approximately  11.2% of the
outstanding  Common  Stock of the Issuer.  Caledonia is the holder of all of the
outstanding  capital stock of Tapir. Cayzer Trust holds 27.2% of the outstanding
common stock of Caledonia and 45.4% of the outstanding common stock of Sterling.
Sterling  holds 9.7% of the  outstanding  common stock of  Caledonia.  Together,
Cayzer Trust and Sterling may be deemed to control Caledonia and, hence,  Tapir.
Cayzer Trust and Sterling disclaim beneficial ownership of Caledonia or Tapir.

         (B) The principal  business  address of Tapir is Sandringham  House, 83
Shirley  Street,  P.O. Box N-3247,  Nassau,  New  Providence,  The Bahamas.  The
principal  business address for both Caledonia and Cayzer Trust is Cayzer House,
1 Thomas More Street,  London, England E1 9AR. The principal business address of
Sterling is Sterling House, Crewkerne, Somerset, England TA18 8LL. The addresses
of the officers and directors of the Reporting Persons are set forth on Schedule
A hereto and are incorporated herein by reference.

         Tapir is an investment holding company.

         Caledonia is a diversified trading and investment company.




<PAGE>

CUSIP No. 439909 10 5                                           Page 7 of 14

         Cayzer Trust is an investment holding company.

         Sterling is an engineering company.

         (C) Certain additional  information about the officers and directors of
the  Reporting  Persons is set forth on  Schedule  A hereto and is  incorporated
herein by reference.

         (D) During the last five years,  neither any  Reporting  Person nor any
Additional Persons,  according to any of the Reporting Person's knowledge,  have
been convicted in a criminal proceeding (excluding traffic violations or similar
misdemeanors).

         (E) During the last five years,  neither any Reporting Person,  nor any
of the Additional Persons, according to any of the Reporting Person's knowledge,
have been a party to a civil proceeding of a judicial or administrative  body of
competent jurisdiction and as a result of such proceeding was or is subject to a
judgment,  decree, or final order enjoining future violations of, or prohibiting
or mandating  activities subject to, federal or state securities laws or finding
any violation with respect to such laws.

         (F) Tapir is a  corporation  organized  under the laws of The  Bahamas.
Caledonia,  Cayzer Trust and Sterling are corporations  organized under the laws
of England.  Each of the Additional  Persons is a citizen of The United Kingdom,
except for S. Deal, P.C.  Dunkley,  P.T. Higgs and H.T. Lunn who are citizens of
The Bahamas.

ITEM 3.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

          The  reporting  persons  initially  filed a Schedule  13D on April 16,
1998. Subsequent to that time the following  transactions took place: On May 21,
22, 26, 27 and 29,  1998,  Tapir  utilized  existing  cash  resources to acquire
30,000 shares at $12.2917 per share,  10,000 shares at $12.375 per share, 10,000
shares at $12.50 per share, 35,000 shares at $12.50 per share, and 15,000 shares
at $12.00 per share, respectively, for a total of 100,000 shares of Common Stock
in the market.  On September 24, 1998, Tapir utilized existing cash resources to
acquire another 100,000 shares of common stock at $6.50 per share in the market.
In addition,  on September 30, 1998,  Tapir utilized  existing cash resources to
acquire 185,000 shares of common stock at $5.7534 per share in the market.

ITEM 4.  PURPOSE OF TRANSACTION

         The  purpose  of the  acquisition  of the  Common  Stock by Tapir is to
acquire and maintain an equity  interest in the Issuer for investment  purposes.
Any Reporting Person, may, from time to time, increase, reduce or dispose of its
investment in the Issuer,  depending on general  economic  conditions,  economic
conditions in the markets in which the Issuer operates,  the market price of the
Common Stock of the Issuer,  the availability of funds,  borrowing costs,  other
opportunities  available to the Reporting  Person,  the  strategic  value of the
investment to the Reporting Person and other considerations.


<PAGE>


CUSIP No. 439909 10 5                                           Page 8 of 14


ITEM 5.  INTEREST IN SECURITIES OF ISSUER

         (A) Tapir is the direct  beneficial owner of 1,494,416 shares of Common
Stock of the Issuer.

         This holding represents  approximately 11.2% of the total of 13,320,950
shares of Common Stock currently  outstanding according to Form S-1 Registration
Statement  of the Issuer and the  amendments  thereto  filed under  Registration
Number  333-464349  ("Issuer   Registration   Statement").   By  virtue  of  the
relationships  described in Item 2, the other Reporting Persons may be deemed to
share indirect beneficial ownership of the shares of Common Stock owned directly
by Tapir. Cayzer Trust and Sterling disclaim all such beneficial ownership.

         (B) Tapir has the direct  power to vote and direct the  disposal of the
shares of Common Stock of the Issuer.

         (C) Except as disclosed above in response to Item 3, there have been no
transactions in shares of Common Stock by any Reporting Person.

         (D) Tapir has the right to receive  and the power to direct  receipt of
dividends from the shares of Common Stock of the Issuer that it holds.

         (E) Not applicable.

ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO
SECURITIES OF THE ISSUER

         As   previously   disclosed  by  Amendment   Number  4  to  the  Issuer
Registration  Statement  filed on April 14,  1998,  the  Issuer  granted  Tapir,
pursuant  to an April 9, 1998  Rights  Agreement,  certain  demand  registration
rights, exercisable after September 30, 1999, and certain piggyback registration
rights  relating  to shares of Common  Stock that Tapir  acquired  in  privately
negotiated  transactions  with certain  shareholders of the Issuer. In addition,
pursuant to a Loan and Pledge  Agreement dated April 9, 1998,  between Tapir and
Marshall B. Hunt,  Tapir agreed to loan funds to Mr. Hunt,  and Mr. Hunt granted
Tapir certain  co-sale or "tag-along"  rights in the event that Mr. Hunt desires
to sell a  significant  portion  of his  shares  of  Common  Stock in a  private
transaction.

ITEM 7.  MATERIAL TO BE FILED AS EXHIBITS

         Not applicable.


<PAGE>
CUSIP No. 439909 10 5                                           Page 9 of 14




                                   SIGNATURES

         After reasonable  inquiry and to the best of my knowledge and belief, I
certify that the information  set forth in this statement is true,  complete and
correct.

October   5, 1998                          TAPIR INVESTMENTS (BAHAMAS) LTD.
         --

                                            By:/s/ S. Deal
                                               --------------------------------
                                               S. Deal, Director and Secretary

October  5, 1998                           CALEDONIA INVESTMENTS PLC
        --
                                            By:/s/ G. P. Denison
                                               --------------------------------
                                               G. P. Denison, Secretary

October  5, 1998                           THE CAYZER TRUST COMPANY LIMITED    
        --

                                            By:/s/ J.I. Mehrtens
                                               --------------------------------
                                               J.I. Mehrtens, Director

October  5, 1998                           STERLING INDUSTRIES PLC
        --
                                            By:/s/ Sir David Kinloch
                                               ---------------------------------
                                               Sir David Kinloch, Director


<PAGE>


CUSIP No. 439909 10 5                                            Page 10 of 14
                           SCHEDULE A TO SCHEDULE 13D

(I)  DIRECTORS AND OFFICERS OF TAPIR INVESTMENTS (BAHAMAS) LTD.

<TABLE>
<CAPTION>
NAME                       RESIDENCE                    PRINCIPAL OCCUPATION                 CITIZENSHIP

<S>                        <C>                         <C>                                   <C>                              
P. N. Buckley              6 Albert Place               Chairman and Chief Executive         United Kingdom
                           London                       Caledonia Investments plc
                           W8 5PD, England

Hon. C. W. Cayzer          Finstock Manor               Executive Director                   United Kingdom
                           Finstock                     Caledonia Investments plc
                           Oxfordshire
                           OX7 3DG, England

S. Deal                    Sandringham House            Lawyer                               Bahamas
                           83 Shirley House
                           P.O. Box N-3247
                           Nassau, Bahamas

P. C. Dunkley              Sandringham House            Lawyer                               Bahamas
                           83 Shirley House
                           P.O. Box N-3247
                           Nassau, Bahamas

P. T. Higgs                Sandringham House            Lawyer                               Bahamas
                           83 Shirley House
                           P.O. Box N-3247
                           Nassau, Bahamas

H. T. Lunn                 Sandringham House            Legal Assistant                      Bahamas
                           83 Shirley House
                           P.O. Box N-3247
                           Nassau, Bahamas
</TABLE>


<PAGE>


CUSIP No. 439909 10 5                                            Page 11 of 14


(II)  DIRECTORS AND EXECUTIVE OFFICERS OF CALEDONIA INVESTMENTS, PLC


<TABLE>
<CAPTION>
NAME                       RESIDENCE                   PRINCIPAL OCCUPATION                   CITIZENSHIP

<S>                        <C>                         <C>                                    <C>                          
P.N. Buckley               6 Albert Place              Chairman and Chief Executive           United Kingdom
                           London                      Caledonia Investments plc
                           W8 5PD, England

J. Burnett-Stuart          Ardmeallie House            Retired                                United Kingdom
                           Huntley
                           Aberdeenshire
                           AB54 5RS, Scotland

J. H. Cartwright           Rectory Meadow              Finance Director                       United Kingdom
                           Hawthorn Place, Penn        Caledonia Investments plc
                           Buckinghamshire
                           HP10 8EH, England

Lord Cayzer                The Grove                   President                              United Kingdom
                           Walsham-le-Willows          Caledonia Investments plc
                           Suffolk, England

N. K. Cayzer               Thriepley House             Director                               United Kingdom
                           Lundie, Dundee              Oriel Group plc
                           Scotland                    Stuart House
                                                       Queens Gate
                                                       Britannia Road
                                                       Waltham Cross
                                                       Hertfordshire, EN8 7TF
                                                       England

Hon. C. W. Cayzer          Finstock Manor              Executive Director                     United Kingdom
                           Finstock                    Caledonia Investments plc
                           Oxfordshire
                           OX7 3DG, England

G. P. Denison              16 Highfield Road           Company Secretary                      United Kingdom
                           Hertford                    Caledonia Investments plc
                           Hertfordshire
                           SG13 8BH, England
</TABLE>

<PAGE>


CUSIP No. 439909 10 5                                            Page 12 of 14
<TABLE>
<S>                        <C>                        <C>                                     <C>              
Sir David Kinloch          29 Walpole Street           Deputy Chief Executive                 United Kingdom
                           London, SW3 4QS             Caledonia Investments plc
                           England

J. R. H. Loudon            Olantigh                    Finance Director                       United Kingdom
                           Wye                         Blue Circle Industries PLC
                           Ashford                     84 Eccleston Square
                           Kent, England               London, SW1V 1PX
                           TN25 5EW                    England

M. G. Wyatt                Pippin Park                 Deputy Chairman                        United Kingdom
                           Lidgate, Newmarket          Caledonia Investments plc
                           Suffolk
                           CB8 9PP, England
</TABLE>



(III)  DIRECTORS AND EXECUTIVE OFFICERS OF THE CAYZER TRUST COMPANY LIMITED


<TABLE>
<CAPTION>
NAME                          RESIDENCE                   PRINCIPAL OCCUPATION              CITIZENSHIP

<S>                          <C>                          <C>                               <C>
G. A. Adkin                   Marsh Farm Cottage          Retired                           United Kingdom
                              Mapperton, Beaminster
                              Dorset DT8 3NP
                              England

P. N. Buckley                 6 Albert Place              Chairman and Chief Executive,     United Kingdom
                              London                      Caledonia Investments plc
                              W8 5PD, England

Lord Cayzer                   The Grove                   President                         United Kingdom
                              Walsham-le-Willows          Caledonia Investments plc
                              Suffolk, England

Hon. C. W. Cayzer             Finstock Manor              Executive Director                United Kingdom
                              Finstock                    Caledonia Investments plc
                              Oxfordshire
                              OX7 3DG, England
</TABLE>

<PAGE>
CUSIP No. 439909 10 5                                            Page 13 of 14

<TABLE>
<S>                           <C>                         <C>                               <C> 
Sir James Cayzer              Kinpurnie Castle            Landowner                         United Kingdom
                              Newtyle, Angus
                              Scotland

The Hon. Mrs. N. Colvin       Tangley House, Andover      None                              United Kingdom
                              Hampshire
                              SP11 OSH, England

J. I. Mehrtens                51 Oxenden Wood Road        Company Secretary of              United Kingdom
                              Chelsfield Park             The Cayzer Trust Company Limited
                              Orpington,
                              Kent BR6 6HP, England

M. G. Wyatt                   Pippin Park                 Deputy Chairman                   United Kingdom
                              Lidgate, Newmarket          Caledonia Investments plc
                              Suffolk
                              CB8 9PP, England
</TABLE>


(IV)  DIRECTORS AND EXECUTIVE OFFICERS OF STERLING INDUSTRIES PLC


<TABLE>
<CAPTION>
NAME                          RESIDENCE                   PRINCIPAL OCCUPATION              CITIZENSHIP

<S>                           <C>                         <C>                               <C>    
D. Blunn                      The Barn, Park Farm         Finance Director                  United Kingdom
                              Marston Magna Somerset      Sterling Industries PLC
                              TA22 8AX, England

P. N. Buckley                 6 Albert Place              Chairman and Chief Executive,     United Kingdom
                              London                      Caledonia Investments plc
                              W8 5PD, England
</TABLE>

<PAGE>

CUSIP No. 439909 10 5                                            Page 14 of 14


<TABLE>
<S>                           <C>                         <C>                               <C>  
H. W. Denman                  The Penthouse               Retired                           United Kingdom
                              Old Avenue
                              St. Georges Hill
                              Weybridge
                              Surrey, KT13 OQB
                              England

D. Diggins                    Fairgarden                  Chief Executive                   United Kingdom
                              Unity Lane                  Sterling Industries PLC
                              Misterton, Crewkerne
                              Somerset TA18 5NA
                              England

Sir David Kinloch             29 Walpole Street           Deputy Chief Executive Caledonia  United Kingdom
                              London, SW3 4QS             Investments plc
                              England

M. G. Wyatt                   Pippin Park                 Deputy Chairman                   United Kingdom
                              Lidgate, Newmarket          Caledonia Investments plc
                              Suffolk
                              CB8 9PP, England
</TABLE>


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