THIS  WARRANT  AND THE SHARES OF COMMON  STOCK OF FUSION  NETWORKS,  INC.  TO BE
ISSUED  UPON ANY  EXERCISE  OF THE WARRANT  HAVE NOT BEEN  REGISTERED  UNDER THE
UNITED STATES  SECURITIES ACT OF 1933, AS AMENDED (THE  "SECURITIES  ACT"),  AND
THIS  WARRANT  AND THE  UNDERLYING  SHARES  OF  COMMON  STOCK  MAY NOT BE  SOLD,
TRANSFERRED  OR  ASSIGNED  UNLESS  REGISTERED  UNDER  THE  SECURITIES  ACT OR AN
EXEMPTION FROM SUCH REGISTRATION IS AVAILABLE.

December 29, 1999                                                       #W99-C 1

                                     WARRANT

                               to Purchase Shares
                                       of
                                  Common Stock
                                       of
                              FUSION NETWORKS, INC.

     This certifies that, for value received, MUELLER AND COMPANY, INC., and any
subsequent  transferee  pursuant to the terms  hereof  (each,  a  "Holder"),  is
entitled to purchase,  subject to the  provisions of this  Warrant,  from Fusion
Networks,  Inc., a Delaware corporation (the "Issuer"), at any time or from time
to time, on or after the date set forth above  ("Initial  Exercise Date") and on
or before the third  anniversary of the Initial  Exercise Date (the  "Expiration
Date"),  five hundred thousand (500,000) fully paid and nonassessable  shares of
common  stock (the "Common  Stock") of the Issuer at an exercise  price equal to
$5.00 per share,  subject to  adjustment  pursuant to the terms  hereunder  (the
"Exercise  Price") (the shares of Common Stock and other  securities  issued and
issuable upon  exercise of this Warrant,  are referred to herein as the "Warrant
Shares").

     It is agreed and  understood  that the Issuer entered into an Agreement and
Plan of  Merger  (the  "Merger  Agreement")  dated  August  18,  1999  with  IDM
Environmental  Corp.  ("IDM"),  Fusion Networks  Holdings,  Inc. (fka IDM/Fusion
Holdings,  Inc.)  ("Holdings")  and  IDM/FNI  Acquisition  Corporation  ("Merger
Subsidiary")  pursuant to which it is  contemplated  that the Merger  Subsidiary
will merge with and into the Issuer (the  "Merger") with both the Issuer and IDM
becoming  wholly-owned  subsidiaries  of Holdings  and the  shareholders  of the
Issuer receiving one share of common stock of Holdings ("Holdings Common Stock")
for each share of Issuer  common stock held.  As a result of the Merger,  Issuer
will cause  Holdings to assume all  obligations of the Issuer under this Warrant
and,  following  the Merger,  each Warrant will entitle the Holder to purchase a
like number of shares of Holdings Common Stock at $5.00 per share.  There can be
no  assurance,  however,  that  the  Merger  will be  consummated  on the  terms
described,  or at all, in which case the Warrants will continue to represent the
right to acquire Common Stock of the Issuer.

<PAGE>

Section 1. Exercise of Warrant.
           -------------------

     (a) Subject to the  provisions  hereof,  this Warrant may be exercised,  in
whole or in part, but not as to a fractional  share, at any time or from time to
time on or after the Initial Exercise Date and on or before the Expiration Date,
by  presentation  and surrender  hereof to the Issuer at the address  which,  in
accordance  with the  provisions  of Section 11 hereof,  is then  effective  for
notices to the Issuer,  with the  Election to Purchase  Form  annexed  hereto as
Schedule One, duly executed and  accompanied by payment to the Issuer as further
set  forth  below in this  Section  1, for the  account  of the  Issuer,  of the
Exercise Price for the number of Warrant Shares  specified in such form. If this
Warrant  should be exercised in part only,  the Issuer shall,  upon surrender of
this  Warrant,  execute and deliver a new Warrant  evidencing  the rights of the
Holder  hereof  to  purchase  the  balance  of the  Warrant  Shares  purchasable
hereunder.  The Issuer  shall  maintain  at its  principal  place of  business a
register for the  registration  of this Warrant and  registration of transfer of
the Warrant.  The Exercise Price for the number of Warrant  Shares  specified in
the  Election  to  Purchase  Form shall be payable in United  States  Dollars by
certified or official  bank check  payable to the order of the Issuer or by wire
transfer of immediately  available  funds to an account  specified by the Issuer
for that purpose.

     (b)  Certificates  representing  Warrant  Shares  shall bear the  following
restrictive legend:

     THE SHARES  REPRESENTED BY THIS  CERTIFICATE HAVE NOT BEEN REGISTERED UNDER
     THE SECURITIES  ACT OF 1933, AS AMENDED.  THE SHARES HAVE BEEN ACQUIRED FOR
     INVESTMENT  AND MAY NOT BE SOLD,  TRANSFERRED OR ASSIGNED IN THE ABSENCE OF
     EITHER AN  EFFECTIVE  REGISTRATION  STATEMENT  FOR THESE  SHARES  UNDER THE
     SECURITIES  ACT  OF  1933,  AS  AMENDED,  OR AN  OPINION  OF  COUNSEL  THAT
     REGISTRATION IS NOT REQUIRED UNDER SAID ACT.

     Section 2.  Reservation of Shares;  Preservation  of Rights of Holder.  The
Issuer hereby agrees that there shall be reserved for issuance  and/or  delivery
upon  exercise  of this  Warrant,  such  number  of  Warrant  Shares as shall be
required for issuance or delivery  upon  exercise of this  Warrant.  The Warrant
surrendered upon exercise shall be canceled by the Issuer.  After the Expiration
Date no shares of Common  Stock  shall be subject to  reservation  in respect of
this Warrant.  The Issuer  further  agrees (i) that it will not, by amendment of
its  Certificate  of  Incorporation  or through  reorganization,  consolidation,
merger,  dissolution or sale of assets,  or by any other voluntary act, avoid or
seek  to  avoid  the  observation  or  performance  of  any  of  the  covenants,
stipulations or conditions to be observed or performed  hereunder by the Issuer,
(ii)  promptly  to take all action as may from time to time be required in order
to  permit  the  Holder  to  exercise  this  Warrant  and the  Issuer  duly  and
effectively to issue shares of its Common Stock or other  securities as provided
herein upon the exercise hereof,  and (iii) promptly to take all action required
or provided herein to protect the rights of the Holder granted hereunder against
dilution.  Without limiting the generality of the foregoing,  should the Warrant
Shares at any time consist in whole or in part of shares of capital stock having
a par value,  the Issuer  agrees that before taking any action which would cause
an adjustment of the Exercise Price so that the same would be less than the then
par value of such Warrant  Shares,  the Issuer shall take any  corporate  action
which may, in the opinion of its counsel,  be necessary in order that the Issuer
may validly and legally issue fully paid and nonassessable shares of such Common
Stock at the Exercise  Price as so adjusted.  The Issuer  further agrees that it
will not  establish  a par value for its  Common  Stock  while  this  Warrant is
outstanding in an amount greater than the Exercise Price.

                                       2
<PAGE>

     Section 3. Exchange, Transfer, Assignment or Loss of Warrant. Any attempted
transfer  of  this  Warrant,  the  Warrant  Shares  or any  new  Warrant  not in
accordance with this Section shall be null and void, and the Issuer shall not in
any way be required to give effect to such transfer. No transfer of this Warrant
shall be effective for any purpose  hereunder  until (i) written  notice of such
transfer and of the name and address of the  transferee has been received by the
Issuer,  and (ii) the transferee  shall first agree in a writing  deposited with
the  Secretary of the Issuer to be bound by all the  provisions of this Warrant.
Upon surrender of this Warrant to the Issuer by any transferee  authorized under
the provisions of this Section 3, the Issuer shall, without charge,  execute and
deliver a new Warrant  registered in the name of such  transferee at the address
specified by such transferee,  and this Warrant shall promptly be canceled.  The
Issuer may deem and treat the  registered  holder of any Warrant as the absolute
owner  thereof  for all  purposes,  and the Issuer  shall not be affected by any
notice to the contrary.  Any Warrant if presented by an  authorized  transferee,
may be  exercised by such  transferee  without  prior  delivery of a new Warrant
issued in the name of the transferee.

     Upon receipt by the Issuer of evidence reasonably satisfactory to it of the
loss,  theft,  destruction  or mutilation  of this Warrant,  and (in the case of
loss, theft or destruction) of reasonably satisfactory indemnification, and upon
surrender  and  cancellation  of this  Warrant,  if  mutilated,  the Issuer will
execute and  deliver a new Warrant of like tenor and date.  Any such new Warrant
executed and delivered shall constitute a separate contractual obligation on the
part of the Issuer,  whether or not the  Warrant so lost,  stolen  destroyed  or
mutilated  shall be at any time  enforceable  by anyone.  Section  4.  Rights of
Holder. Neither a Holder nor his transferee by devise or the laws of descent and
distribution  or  otherwise  shall be, or have any  rights or  privileges  of, a
shareholder of the Issuer with respect to any Warrant  Shares,  unless and until
certificates  representing  such  Warrant  Shares  shall  have been  issued  and
delivered thereto.

     Section 5.  Adjustments in Exercise Price and Warrant Shares.  The Exercise
Price and  Warrant  Shares  shall be subject  to  adjustment  as noted  above in
connection  with the Merger and,  from time to time, as provided in this Section
5.

          (a)  If  the  Issuer  is  recapitalized  through  the  subdivision  or
     combination  of its  outstanding  shares of Common  Stock  into a larger or
     smaller  number of shares,  the number of shares of Common  Stock for which
     this  Warrant may be exercised  shall be  increased  or reduced,  as of the
     record  date  for such  recapitalization,  in the  same  proportion  as the
     increase or decrease in the  outstanding  shares of Common  Stock,  and the
     Exercise  Price shall be adjusted so that the aggregate  amount payable for
     the purchase of all Warrant Shares issuable hereunder immediately after the
     record date for such  recapitalization  shall equal the aggregate amount so
     payable immediately before such record date.


                                       3
<PAGE>
          (b) In case of any  consolidation of the Issuer with, or merger of the
     Issuer into, any other corporation (other than a consolidation or merger in
     which  the  Issuer  is the  continuing  corporation  and in which no change
     occurs in its outstanding Common Stock), or in case of any sale or transfer
     of all or substantially  all of the assets of the Issuer, or in the case of
     any statutory  exchange of securities with another  corporation  (including
     any exchange  effected in connection  with a merger of a third  corporation
     into the Issuer,  except  where the Issuer is the  surviving  entity and no
     change occurs in its outstanding  Common Stock),  the corporation formed by
     such  consolidation  or the  corporation  resulting from such merger or the
     corporation  which shall have  acquired  such assets or  securities  of the
     Issuer,  as the  case may be,  shall  execute  and  deliver  to the  Holder
     simultaneously therewith a new Warrant,  satisfactory in form and substance
     to the  Holder,  together  with such  other  documents  as the  Holder  may
     reasonably  request,  entitling the Holder thereof to receive upon exercise
     of such Warrant the kind and amount of shares of stock and other securities
     and property receivable upon such consolidation, merger, sale, transfer, or
     exchange of  securities,  or upon the  dissolution  following  such sale or
     other  transfer,  by a holder of the  number  of  shares  of  Common  Stock
     purchasable  upon  exercise  of  this  Warrant  immediately  prior  to such
     consolidation,  merger, sale, transfer, or exchange. Such new Warrant shall
     contain the same basic other terms and conditions as this Warrant and shall
     provide for adjustments  which, for events subsequent to the effective date
     of  such  written  instrument,  shall  be as  nearly  equivalent  as may be
     practicable  to the  adjustments  provided for in this Section 5. The above
     provisions  of this  paragraph  (d)  shall  similarly  apply to  successive
     consolidations,  mergers,  exchanges,  sales  or  other  transfers  covered
     hereby.

          (c) If an event  occurs  which is  similar  in  nature  to the  events
     described in this Section 5, but is not expressly covered hereby, the Board
     of  Directors  of the  Issuer  shall  make  or  arrange  for  an  equitable
     adjustment to the number of Warrant Shares and the Exercise Price.

          (d) The term "Common  Stock" shall mean the Common Stock of the Issuer
     as the same exists at the date of issuance of this Warrant or as such stock
     may be constituted  from time to time,  except that for the purpose of this
     Section 5, the term "Common  Stock" shall include any stock of any class of
     the Issuer  which has no  preference  in respect of dividends or of amounts
     payable  in  the  event  of  any  voluntary  or  involuntary   liquidation,
     dissolution  or  winding  up of the  Issuer  and  which is not  subject  to
     redemption by the Issuer.

          (e) The Issuer shall retain a firm of independent  public  accountants
     of recognized  standing (who may be any such firm regularly employed by the
     Issuer)  to make any  computation  required  under  this  Section  5, and a
     certificate  signed  by such  firm  shall  be  conclusive  evidence  of the
     correctness of any computation made under this Section 5.

          (f) Whenever the number of Warrant  Shares or the Exercise Price shall
     be adjusted as required  by the  provisions  of this  Section 5, the Issuer
     forthwith  shall  file in the  custody  of its  secretary  or an  assistant
     secretary,  at its principal  office,  and furnish to each Holder hereof, a
     certificate  prepared in accordance  with paragraph (h) above,  showing the
     adjusted  number of Warrant Shares and the Exercise Price and setting forth
     in reasonable detail the circumstances requiring the adjustments.

                                       4
<PAGE>

          (g) Notwithstanding any other provision, this Warrant shall be binding
     upon and inure to the benefit of any successors and assigns of the Issuer.

          (h) No  adjustment  in the  Exercise  Price  in  accordance  with  the
     provisions of this Section 5 need be made if such  adjustment  would amount
     to a change in such Exercise Price of less than $.01 provided however, that
     the amount by which any  adjustment is not made by reason of the provisions
     of this  paragraph  (k) shall be carried  forward and taken into account at
     the time of any subsequent adjustment in the Exercise Price.

          (i) If an  adjustment  is made under  this  Section 5 and the event to
     which the  adjustment  relates  does not  occur,  then any  adjustments  in
     accordance  with this Section 5 shall be readjusted  to the Exercise  Price
     and the number of Warrant  Shares  which would be in effect had the earlier
     adjustment not been made.

     Section 6. Taxes on Issue or  Transfer  of Common  Stock and  Warrant.  The
Issuer  shall pay any and all  documentary  stamp or similar  issue or  transfer
taxes  payable in respect of the issue or delivery of shares of Common  Stock or
other  securities  on the  exercise  of this  Warrant.  The Issuer  shall not be
required to pay any tax which may be payable in respect of any  transfer of this
Warrant or in respect of any  transfers  involved  in the issue or  delivery  of
shares or the  exercise of this  Warrant in a name other than that of the Holder
and the person requesting such transfer,  issue or delivery shall be responsible
for the  payment of any such tax (and the Issuer  shall not be required to issue
or deliver said shares until such tax has been paid or provided for).

     Section  7.  Notice  of  Adjustment.  So  long  as this  Warrant  shall  be
outstanding,  (a) if the Issuer shall  propose to pay any  dividends or make any
distribution  upon the Common Stock,  or (b) if the Issuer shall offer generally
to the holder of Common  Stock the right to  subscribe to or purchase any shares
of any class of Common Stock or securities  convertible into Common Stock or any
other  similar  rights,   or  (c)  if  there  shall  be  any  proposed   capital
reorganization  of the Issuer in which the Issuer is not the  surviving  entity,
recapitalization of the capital stock of the Issuer,  consolidation or merger of
the Issuer with or into another  corporation,  sale,  lease or other transfer of
all or substantially  all of the property and assets of the Issuer, or voluntary
or involuntary  dissolution,  liquidation or winding up of the Issuer, or (d) if
the  Issuer  shall  give  to its  stockholders  any  notices,  report  or  other
communication  respecting any  significant  or special action or event,  then in
such event, the Issuer shall give to the Holder,  at least ten days prior to the
relevant date described below (or such shorter period as is reasonably  possible
if ten days is not reasonably  possible),  a notice  containing a description of
the  proposed  action or event and stating the date or expected  date on which a
record of the  Issuer's  stockholders  is to be taken  for any of the  foregoing
purposes,   and  the  date  or  expected  date  on  which  any  such   dividend,
distribution,  subscription,  reclassification,  reorganization,  consolidation,
combination,   merger,  conveyance,   sale,  lease  or  transfer,   dissolution,
liquidation or winding up is to take place and the date or expected date, if any
is to be fixed,  as of which the  holders  of  Common  Stock of record  shall be
entitled  to  exchange  their  shares of Common  Stock for  securities  or other
property deliverable upon such event.

                                       5
<PAGE>
     Section 8. Notices. All communications  hereunder shall be in writing, and,
if sent to the Holder shall be sufficient in all respects if delivered,  sent by
registered  mail, or by facsimile and confirmed to the Holder at its address and
telecopier number as set forth in the Subscription  Agreement between the Holder
and the Issuer relating to the purchase and sale of Units offered by the Issuer,
or at such other  address or addresses as may have been  furnished to the Issuer
in writing,  or, if sent to the Issuer,  shall be delivered,  sent by registered
mail or by facsimile and confirmed to the Issuer at:

                           Fusion Networks, Inc.
                           8115 N.W. 29th Street
                           Miami, Florida 33122
                           Attn: Hernando Bahamon, President
                           Telephone:  (305) 477-6701
                           Telecopier: (305) 477-6703

     Section  9.   Governing  Law.  This  Warrant  shall  be  governed  by,  and
interpreted in accordance with, the laws of the State of Florida.

Dated: December 29, 1999

                                                   FUSION NETWORKS, INC.

                                                   By:
                                                   Name: Hernando Bahamon
                                                   Title:   President

ATTEST:


Name:_______________________


Warrant #:                 W99-C 1
Registered Holder:         Mueller & Company
Number of Shares: 500,000


                                       6
<PAGE>

                                                                    Schedule One

                              ELECTION TO PURCHASE

     The undersigned  hereby  irrevocably elects to exercise this Warrant and to
purchase ___ shares of Fusion  Networks,  Inc.  Common Stock  issuable  upon the
exercise of this  Warrant,  and requests  that  certificates  for such shares be
issued in the name of:



                                     (Name)



                                    (Address)



                (United States Social Security or other taxpayer
                       identifying number, if applicable)

and, if different from above, be delivered to:



                                     (Name)



                                    (Address)

and,  if the number of Warrant  Shares so  purchased  are not all of the Warrant
Shares  issuable upon  exercise of this Warrant,  that a Warrant to purchase the
balance of such Warrant  Shares be  registered in the name of, and delivered to,
the undersigned at the address stated below.

Date:____________, 20____

Name of Registered
Owner:



Address:



Signature:

                                       7