EXHIBIT 4.5

This  Warrant,  and the  securities  issuable upon the exercise of this Warrant,
have not been  registered  under the  Securities  Act of 1933,  as amended  (the
"Act") or  applicable  state law and may not be sold,  transferred  or otherwise
disposed  of unless  registered  under the Act and any  applicable  state act or
unless the Company is satisfied that this Warrant and the underlying  securities
may be transferred without registration under the Act.

                 ENVIRONMENTAL REMEDIATION HOLDING CORPORATION

                    Redeemable Common Stock Purchase Warrant

                       VOID AFTER 5:00 P.M., EASTERN TIME

                                  June 18, 2002

         FOR VALUE RECEIVED,  Environmental  Remediation Holding Corporation,  a
Colorado corporation (the "Company"), promises to issue in the name of, and sell
and  deliver  to  ___________,   (the  "Holder"),  or  the  Holder's  registered
transferee or assignee (also the "Holder"), a certificate or certificates for an
aggregate of _________ shares (the "Shares") of Common Stock,  $0.0001 par value
per share (the "Common Stock"), of the Company, (i) at any time on or before the
later  of 5:00  p.m.,  Eastern  Time,  on June 18,  2000  (the  "First  Exercise
Period"),  upon  payment  therefore  of $0.50 per  Share in lawful  funds of the
United States of America or thereafter  and (ii) on or before June 18, 2002 (the
"Second  Exercise  Period") upon payment  therefore of $0.85 per share in lawful
funds of the United States of America.  In the event the Warrants and underlying
shares are not  registered  as provided  herein on or before six (6) months from
the date hereof the Warrant  exercise price for the Second Exercise Period shall
remain  $0.50  for the term of the  Warrant(s).  And  further,  in the event the
shares are registered as provided herein at any time prior to June 18, 2002, and
the market price drops below $.75 after ninety (90) days from the effective date
of such registration for (i) more than five (5) consecutive trading days or (ii)
seven (7) out of ten (10)  trading  days,  then the  exercise  price  thereafter
during the balance of the term of this Warrant shall be equal to fifty percent

(50%) of the average  closing  price for the ten (10) trading  days  immediately
preceding the Date of Exercise as defined herein.

         1.  Exercise of the Warrant.  In case the Holder of this Warrant  shall
desire to exercise this Warrant in whole or in part, the Holder shall  surrender
this  Warrant,  with the form of  exercise  notice on the last page  hereof duly
executed by the Holder,  to the Company,  accompanied by payment of the Exercise
Price per Warrant.

                  (a) This  Warrant may be exercised in whole or in part but not
for  fractional  Shares.  In case of the exercise in part only, the Company will
deliver  to the  Holder a new  Warrant  of like  tenor in the name of the Holder
evidencing  the right to purchase  the number of Shares as to which this Warrant
has not been exercised.

                  (b) This Warrant may also be exercised by the Warrant  Holder,
in  whole or in part,  at any time and from  time to time and from  time to time
during the Exercise Period by presentation  and surrender of this Warrant to the
Company at its principal  executive offices with a written notice of the Warrant
Holder's intention to effect a cashless exercise, including a calculation of the
number of shares of Common Stock to be issued upon such  exercise in  accordance
with the  terms  hereof (a  "Cashless  Exercise").  In the  event of a  Cashless
Exercise,  the holder shall  surrender this Warrant for that number of shares of
Common Stock determined by

                            (i) multiplying  the number of Shares for which this
Warrant is being exercised by the per share warrant value as defined in  Section
1(c) herein; and

                           (ii) dividing the product by the  bid  price  of  one
share of the Common Stock on the trading day next preceding the date of exercise
as defined in Section 1(d) hereof.

In the event that the  Warrant is not  exercised  in full,  the number of Shares
shall be  reduced  by the  number of such  Shares  for  which  this  Warrant  is
exercised, and the Company, at its expense, shall forthwith issue and deliver to
or upon the order of the Holder a new Warrant of

like tenor in the name of the Holder or as the  Holder may  request,  reflecting
such adjusted number of Shares.

                  (c) As used herein "Per Share  Warrant  Value"  shall mean the
difference  resulting from  subtracting the Exercise Price from the bid price of
one  share  of  Common  Stock on the  trading  day  next  preceding  the Date of
Exercise.

                  (d) As used herein "Date of Exercise" shall mean the date that
the advance  copy of the Form of Exercise  set forth herein is sent by facsimile
to the  Company,  provided  that the  original  Warrant and Form of Exercise are
received by the Company  within three (3) business  days. If the Warrant  Holder
has not sent advance notice by facsimile, the Date of Exercise shall be the date
the original Form of Exercise is received by the Company.

         2.  Covenants of the Company.  The Company hereby covenants and  agrees
that prior to the expiration of this Warrant by exercise or by its terms:

                  (a) The Company shall at all times reserve and keep available,
out of its  authorized  and unissued  share  capital,  solely for the purpose of
providing  for the  exercise,  forthwith  upon the  request of the Holder of the
Warrants then outstanding and in effect,  such number of shares of Common Stock,
as shall, from time to time, be sufficient for the exercise of the Warrants. The
Company  shall,  from time to time, in accordance  with the laws of the State of
Florida,  increase the authorized amount of its share capital if at any time the
number of shares of Common Stock  remaining  unissued and  unreserved  for other
purposes  shall not be  sufficient  to permit the exercise of the Warrants  then
outstanding and in effect.

                  (b) The Company  covenants and agrees that all shares that may
be issued upon the exercise of the rights represented by this Warrant will, upon
issuance,  be validly issued,  fully paid and non-assessable,  and free from all
taxes, liens and charges with respect to the issue thereof.

         3.  Loss, Theft, Destruction or Mutilation.  In case this Warrant shall
become mutilated or defaced or be destroyed,  lost or stolen,  the Company shall
execute  and  deliver a new  Warrant  in  exchange  for and upon  surrender  and
cancellation  of  such  mutilated  or  defaced  Warrant  or in  lieu  of  and in
substitution for such warrant so destroyed,  lost, or stolen, upon the Holder of
such Warrant filing with the Company such evidence  satisfactory to it that such
Warrant has been so  mutilated,  defaced,  destroyed,  lost or stolen and of the
ownership thereof by the Holder;  provided,  however,  that the Company shall be
entitled,  as a condition to the execution and delivery of such new Warrant,  to
demand indemnity satisfactory to it and payment of expenses and charges incurred
in connection with the delivery of such new Warrant,  and may demand a bond from
the Holder. Any Warrant so surrendered to the Company shall be canceled.

         4. Record Owner. At the time of the surrender of this Warrant, together
with the form of  subscription  properly  executed  and payment of the  Exercise
Price,  the person  exercising  this Warrant shall be deemed to be the Holder of
record of the Common Stock deliverable upon such exercise,  in whole or in part,
notwithstanding  that the stock  transfer  books of the  Company  shall  then be
closed  or that  certificates  representing  such  securities  shall not then be
actually delivered to such person.

         5. Mailing of Notices,  etc. All notices and other  communications from
the  Company  to the  Holder of this  Warrant  shall be  mailed  by  first-class
registered or certified mail, return receipt requested,  potage prepaid,  to the
Holder at the address set forth in the records of the Company,  or to such other
address  furnished  to the Company in writing from time to time by the Holder of
this Warrant.

         6. Registration  Under the Securities Act of 1933, as amended.  Neither
this  Warrant  nor the  Shares  underlying  it have  been  registered  under the
Securities  Act of 1933,  as amended  (the "Act").  Unless and until  registered
under  the  Act,  this  Warrant  and all  replacement  Warrants  shall  bear the
following legend:

         This  Warrant,  and  the  securities issuable upon the exercise of this
         Warrant, have not been registered under the

         Securities Act of 1933, as amended (the "Act") or applicable  state law
         and may not be  sold,  transferred  or  otherwise  disposed  of  unless
         registered  under the Act and any  applicable  state act or unless  the
         Company is satisfied that this Warrant and the underling securities may
         be transferred without registration under the Act.

         The Shares  issuable  upon  exercise of this Warrant  shall be Rule 144
         restricted shares (the "Restricted  Securities"). After issuance of the
         Shares,  Company  agrees to use its best  efforts  to assist  Holder in
         registering the Shares or to register the Shares under the Act  subject
         to the rules, regulations, and other provisions of said Act.

         7. Piggyback Registration.

                  (a) At any time that the  Company  proposes  to file a Company
registration  statement on Form S-1, including the pending Form S-1 registration
filed on January 8, 1998,  under the Act (the  "Registrations  Statement"),  the
Company shall cause to be included in such registration statement any securities
issued or subject to issuance in this transaction;  provided,  however, that if,
at any time  after  giving  written  notice of its  intention  to  register  any
securities and prior to the effective date of the Company Registration Statement
filed in connection with such registration,  the Company shall determine for any
reason  not  to  register  or  to  delay  registration  of  holder's  Restricted
Securities,  the  Company  may, at its  election,  give  written  notice of such
determination to holder and, thereupon:

                           (i) in the ease of a determination not to register,
shall be relieved of its obligation to register Holder's  Restricted  Securities
in connection  with such  registration  (but not from its  obligation to pay the
registration expenses in connection therewith), and

                           (ii) in the case of a delay in registering, shall be
permitted  to delay  registering  Holder's  Restricted  Securities  for the same
period as the delay in registering such other securities.


                  (b) The  Company's obligation to include Restricted Securities
in a Company's Registration Statement pursuant to Section 7(a)  shall be subject
to the following limitations:

                           (i) The Company may elect, at its sole option and for
any reason, not to register Holder's Restricted Shares,  provided however,  that
this right is limited to one (1) time and relative to one (1) particular Company
Registration Statement.

                           (ii)The Company shall not be obligated to include any
Restricted Securities in a registration statement filed on Form S-4, Form S-8 or
such other similar successor forms then in effect under the Securities Act.

                           (iii) If a Company Registration Statement involves an
underwritten  offering  and the  managing  underwriter  advises  the  Company in
writing that in its opinion,  the number of securities  requested to be included
in such Company  Registration  Statement exceeds the number which can be sold in
such  offering  without  adversely  affecting  the  offering,  the Company shall
include in such Company  Registration  Statement  the number of such  securities
which the Company is so advised can be sold in such offering  without  adversely
affecting the offering, determined as follows:

                              (A)  first, the securities proposed by the Company
to be sold for it own account, and

                              (B) second, any Restricted Securities requested to
be  included in such  registration  and any other  securities  of the Company in
accordance with the  priorities,  if and then existing among the holders of such
securities pro rata among the holders thereof  requesting  such  registration on
the basis of the number of shares of such securities requested to be included by
such holders.

                           (iv) The Company shall not be  obligated  to  include
Restricted Securities in more than one (1) Company Registration Statement.

                  (c) To the extent Holder's Restricted  Securities are intended
to be included in a Company  Registration  Statement,  Holder may include any of
its Restricted  Securities in such Company  Registration  Statement  pursuant to
this  Agreement only if Holder  furnishes to the Company in writing,  within ten
(10) business days

after receipt of a written request therefor,  such information specified in Item
507 of Regulation S-K under the Act or such other information as the Company may
reasonably request for use in connection with the Company Registration Statement
or Prospectus or preliminary  Prospectus included therein and in any application
to the NASD.  Holder as to which the  Company  Registration  Statement  is being
effected agrees to furnish  promptly to the Company all information  required to
be  disclosed  in order  to make all  information  previously  furnished  to the
Company by Holder not materially misleading.

         8. Anti-dilution Provision. The Exercise Price in effect from  time  to
time shall be,  subject to  adjustment in accordance with the provisions of this
Section 8.

                  (a)  Adjustments  for Stock  Splits and  Combinations.  If the
Company  shall at any time or from time to time after the date hereof,  effect a
stock split of the outstanding  Common Stock,  the applicable  Exercise Price in
effect immediately prior to the stock split shall be proportionately  decreased.
If the  Company  shall at any time or from time to time  after the date  hereof,
combine the outstanding shares of Common Stock, the applicable Exercise Price in
effect immediately prior to the combination shall be proportionately  increased.
Any  adjustments  under this  Section  8(a) shall be  effective  at the close of
business on the date the stock split or combination occurs.

                  (b) Adjustments for Certain  Dividends and  Distributions.  If
the Company shall at any time or from time after the date hereof,  make or issue
or set a record date for the  determination  of holders of Common Stock entitled
to receive a dividend or other  distribution  payable in shares of Common Stock,
then,  and in each event,  the applicable  Exercise Price in effect  immediately
prior to such event shall be  decreased  as of the time of such  issuance or, in
the event such a record date shall have been fixed,  as of the close of business
on such record date, by  multiplying,  as applicable,  the  applicable  Exercise
Price then in effect by a fraction;

                         (i) the numerator of which shall be the total number of
shares of Common Stock issued and outstanding immediately prior to the

time of such issuance or the close of business on such record date;

and

                         (ii) the denominator of which shall be the total number
of shares of Common Stock issued and outstanding  immediately  prior to the time
of such issuance or the close of business on such record date plus the number of
shares of Common Stock issuable in payment of such dividend or distribution.

                  (c) Adjustment for Other Dividends and  Distributions.  If the
Company  shall at any time or from time to time after the date  hereof,  make or
issue or set a record  date for the  determination  of holders  of Common  Stock
entitled  to  receive a  dividend  or other  distribution  payable in other than
shares of Common Stock, then, and in each event, an appropriate  revision to the
Exercise Price shall be made and provision  shall be made (by adjustments of the
Exercise  Price or otherwise) so that the holder of this Note shall receive upon
conversions  thereof,  in  addition  to the  number of  shares  of Common  Stock
receivable  thereon,  the number of  securities  of the Company which they would
have received had this Note been converted into Common Stock on the date of such
event and had  thereafter,  during the period from the date of such event to and
including  the  date  hereof,   retained  such  securities  (together  with  any
distributions  payable  thereon during such period),  giving  application to all
adjustments  called for during such period  under this Section 8(c) with respect
to the rights of the holders of the Warrant.

                  (d)    Adjustments   for    Reclassification,    Exchange   or
Substitution.  If the Common Stock  issuable upon  conversion of this Warrant at
any time or from time to time after the date  hereof  shall be changed  into the
same or different number of shares of any class or classes of stock,  whether by
reclassification,  exchange,  substitution or otherwise  (other than by way of a
stock split or combination of shares or stock dividends provided for in Sections
8(a), (b) and (c), or a reorganization, merger, consolidation, or sale of assets
provided for in Section 8(e),  then, and in each event, an appropriate  revision
to the Exercise Price shall by made and provisions shall be made (by adjustments
of the Exercise  Price of  otherwise)  so that the holder of this Warrant  shall
have the right thereafter to convert such Warrant

into the kind and amount of shares of stock and other securities receivable upon
reclassification,  exchange,  substitution  or other  change,  by holders of the
number of shares of  Common  Stock  into  which  such  Warrant  might  have been
converted immediately prior to such reclassification,  exchange, substitution or
other change, all subject to further adjustment as provided herein.

                  (e) Adjustments for Reorganization,  Merger,  Consolidation or
Sales of Assets. If at any time or from time to time after the date hereof there
shall be a capital  reorganization  of the Company (other than by way of a stock
split or combination of shares or stock dividends or distributions  provided for
in Section 8(a), (b), and (c), or a  reclassification,  exchange or substitution
of shares  provided for in Section  8(d),  or a merger or  consolidation  of the
Company with or into another  corporation,  or the sale of all or  substantially
all of the Company's properties or assets to any other person, then as a part of
such reorganization,  merger, consolidation, or sale, an appropriate revision to
the Exercise Price shall be made and provision  shall be made (by adjustments of
the Exercise  Price or  otherwise) so that the holder of this Warrant shall have
the right  thereafter to convert this Warrant into the kind and amount of shares
of stock and other  securities  or  property  of the  Company  or any  successor
corporation resulting from such reorganization,  merger, consolidation, or sale,
to which a holder of Common Stock  deliverable  upon  conversion  of such shares
would have been entitled upon such  reorganization,  merger,  consolidation,  or
sale,  to which a holder of Common Stock  deliverable  upon  conversion  of such
shares would have been entitled upon such reorganization, merger, consolidation,
or  sale.  In any  such  case,  appropriate  adjustment  shall  be  made  in the
application of the provisions of this Section 8(e) with respect to the rights of
the holders of this Warrant after the reorganization,  merger, consolidation, or
sale to the  end  that  the  provisions  of this  Section  8(e)  (including  any
adjustment in the applicable  conversion  ratio then in effect and the number of
shares of stock or other securities deliverable upon conversion of this Warrant)
shall be applied  after that event in as nearly an  equivalent  manner as may be
practicable.

         9. Laws  of  the  State  of Florida. This Warrant shall be governed by,
interpreted under and construed in all respects in

accordance with, the laws of the State of Florida,  irrespective of the place of
domicile or residence of any party.

         10. Entire  Agreement and  Modification.  The Company and the Holder of
this Warrant  hereby  represent and warrant that this Warrant is intended to and
does contain and embody all of the understandings  and agreements,  both written
and oral,  of the  parties  hereto with  respect to the  subject  matter of this
Warrant,  and that there exists no oral agreement or  understanding,  express or
implied,  whereby the absolute,  final and unconditional character and nature of
this  Warrant  shall  be in  any  way  invalidated,  empowered  or  affected.  A
modification  or waiver of any of the terms,  conditions  or  provisions of this
Warrant  shall be effective  only if made in writing and executed  with the same
formality as this Warrant.

         11. Controlling Document. Notwithstanding anything contained herein, in
the event of conflict between any provision contained herein and those contained
in a certain note of even date simultaneously  delivered to Holder (the "Note"),
which Notes is incorporated herein by reference, the provisions contained in the
Note shall control.

         This  Warrant  will become  wholly void and of no effect and the rights
evidenced  hereby will terminate  unless  exercised in accordance with the terms
and  provisions  hereof at or before 5:00 p.m.,  Eastern Time, on the Expiration
Date.

                                FORM OF EXERCISE

         The  undersigned  hereby  irrevocably  elects to exercise  the purchase
rights  represented by this Warrant for, and to purchase  thereunder,  Shares of
Common Stock, $0.0001 par value per share, of Environmental Remediation Holding
Corporation, and herewith makes payment of $
per Share, or a total of  $                        therefore, and
request that such Shares be issued to:

(print name)


- ---------------------------------
(address)

- ---------------------------------
(social security number)

Dated:

(signature must conform in all respects to name
of Holder as specified on the face of this Warrant)

                               FORM OF ASSIGNMENT

         FOR VALUE RECEIVED, the undersigned hereby sells, assigns, and
transfers unto
the right  represented by this Warrant to
         Shares of Common  Stock,  $0.0001 par value per Share of  Environmental
Remediation  Holding  Corporation to which this Warrant relates,  and  appoints,
attorney to transfer said right on the books of the Company with full  power  of
substitution in the premises.


Dated:

(signature must conform in all respects to name
of Holder as specified on the face of this Warrant)

         IN WITNESS WHEREOF,  the Company, by its duly authorized  officer,  has
executed this Warrant this day of June, 1998.


Attest:                                             Environmental Remediation
                                                       Holding Corporation

____________________________               By:      ____________________________
                                                    Noreen Wilson CFO and
                                                    Vice President

(CORPORATE SEAL)