EARTH SCIENCES INC
S-3, 1997-09-08
MINERAL ROYALTY TRADERS
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As filed with the Securities and Exchange Commission on September 8, 1997.
                              Registration No. ___-_____
===========================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                        
                                    FORM S-3
                                        
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                                        
                              Earth Sciences, Inc.
              (Exact name of registrant as specified in its charter)
                                        
               Colorado                                84-0503749
     (State of incorporation)                (IRS Employer Identification No.)
                                        
                 910 12th Street, Golden, Colorado        80401
           (Address of principal executive offices, including Zip Code)
                                        
     (Registrant's telephone number, including area code):   (303) 279-7641

                                Mark H. McKinnies
                    910 12th Street, Golden, Colorado  80401
                                 (303) 279-7641
            (Name, address, including zip code and telephone number,
              including area code, of agent for service of process)
                                        
APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:  From time to
time after this Registration Statement becomes effective.

If the only securities being registered on this form are being offered
pursuant to dividend or interest reinvestment plans, please check the
following box. [   ]

If any of the securities being registered on this Form are to be offered on a
delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in conjunction with dividend or
interest reinvestment plans, check the following box.  [ X ]

If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following
box and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering.  [   ]

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under
the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering.  [   ]

If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box.
  [   ]

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<PAGE>

CALCULATION OF REGISTRATION FEE
______________________________________________________________________________
Title of each                                      Proposed
class of                        Proposed           maximum
securities to     Amount to be  maximum offer-     aggregate     Amount of
registered        registered    ing price per      offering      registration
                                share              price         fee
______________________________________________________________________________
Common Stock, $.01
par value:
  Issued and
  outstanding    399,750 Shares $  2.35 (1)       $  939,413 (1) $   284.67
  Issueable upon
  conversion of
  Debentures   1,326,667 Shares $  1.50 (2)       $1,990,000 (2) $   944.75
  Issueable upon
  exercise of
  options         50,000 Shares $  2.50 (3)       $  125,000 (3) $    37.88
______________________________________________________________________________
Totals         1,776,417 Shares                   $3,054,413     $ 1,267.30
______________________________________________________________________________

(1)  Based on the average price of the Common Stock on NASDAQ's  SmallCapSM
Market on September 5, 1997. The resulting fee is calculated pursuant to
section (c) of Rule 457 of Regulation C.
(2)  Based on the maximum number of shares that could be issued pursuant this
Registration Statement and the terms of the Debentures with respect to the
conversion price. The resulting fee is calculated pursuant to section (g) of
Rule 457 of Regulation C using a price of $2.35 per share.
(3)  Based on the weighted average exercise price of the options. The
resulting fee is calculated pursuant to section (g) of Rule 457 of Regulation
C.


THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR DATES
AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT OF 1933 OR UNTIL THIS REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION
8(A), MAY DETERMINE.

                                        2
<PAGE>

INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT.  A
REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION.  THESE SECURITIES MAY NOT BE SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT BECOMES
EFFECTIVE.  THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE
SECURITIES IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE
UNLAWFUL PRIOR TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF
ANY SUCH STATE.

PROSPECTUS
SUBJECT TO COMPLETION, DATED September 8, 1997

                              EARTH SCIENCES, INC.
                        1,776,417 SHARES OF COMMON STOCK

     This Prospectus relates to the public offer and sale by certain
shareholders (the "Selling Shareholders") of an aggregate of 1,776,417 shares
(the "Shares") of $0.01 par value common stock (the "Common Stock") of Earth
Sciences, Inc., a Colorado corporation (the "Company"). Of the 1,776,417
shares of Common Stock offered by the Selling Shareholders, 399,750 shares are
currently issued and outstanding and the remaining 1,376,667 are issuable on
exercise of options and conversion of convertible debentures.  (See "SELLING
STOCKHOLDERS").

     The Selling Shareholders will offer their Common  Stock through or to
securities brokers or dealers designated by them in the over-the-counter
market or in other transactions negotiated by the Selling Shareholders.  Any
such sale of Common Stock by Selling Shareholders must be accompanied by, or
follow the delivery of, a prospectus filed with a current registration
statement relating to the Common Stock being offered, unless a Selling
Shareholder elects to rely on Rule 144 or another exemption from the
registration requirements in connection with a particular transaction.  The
Selling Shareholders and any broker, dealer, or agent that participates with
the Selling Shareholders in the sale of Common Stock  offered hereby may be
deemed "underwriters" within the meaning of the Securities Act of 1933, as
amended ( the "Securities Act"), and any commission or discounts received by
them and any profit on the resale of the Common Stock purchased by them may be
deemed to be underwriting commissions under the Securities Act. (See "SELLING
STOCKHOLDERS" and "PLAN OF DISTRIBUTION").

The Company's Common Stock is traded in the over-the-counter market and is
quoted on NASDAQ's  SmallCapSM Market ("Nasdaq") under the symbol "ESCI".  On
_______, 1997, the closing price of the Common Stock on Nasdaq was $____ per
share.

THE ACQUISITION AND OWNERSHIP OF THE COMMON STOCK INVOLVE A HIGH DEGREE OF
RISK.  THE COMMON STOCK SHOULD BE PURCHASED ONLY BY INVESTORS WHO ARE ABLE TO
AFFORD THE RISK OF LOSS OF THEIR ENTIRE INVESTMENT. (SEE "RISK FACTORS"
BEGINNING ON PAGE 6 OF THIS PROSPECTUS).

THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS.  ANY REPRESENTATION TO THE CONTRARY
IS A CRIMINAL OFFENSE.


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<PAGE>
   
                                                   
                        Price to   Offering       Selling        Proceeds to
                        Public(1)  Commissions(2) Stockholders   Company (3)

By Selling Shareholders
  Per Share  .........$      2.35   $    --       $      2.35    $   --
  TOTAL   ............$ 4,174,580   $    --       $ 4,174,580    $   --

(1)  The price per share for the securities offered by the Selling
Shareholders is estimated at the closing sales price quoted by Nasdaq for the
Common Stock at $2.35 on September 5, 1997.  The Common Stock may be offered
at the current market price, which may vary through the period during which
the securities may be offered, or at such other prices as may be negotiated by
the Selling Shareholder and the purchaser at the time of sale.
(2)  The securities to be sold by Selling Stockholders may be sold by them or
through or to securities brokers or dealers, which sales may involve the
payment of commissions to the Selling Stockholders.
(3)  Does not reflect expenses of this offering payable by the Company
estimated at $6,000 nor the receipt by the Company of approximately $125,000
on exercise of options.  (See "PLAN OF DISTRIBUTION" below).

     The Company will not receive any proceeds from the sale of Common Stock
by the Selling Stockholders.  However, the Company would receive proceeds upon
exercise of options held by Selling Stockholders prior to the sale of Common
Stock issuable on such exercise.  (See "USE OF PROCEEDS").  In connection with
this offering, the Company estimates that it will incur costs of approximately
$6,000 for legal, accounting, printing, and other costs.  Any separate costs
of Selling Stockholders will be borne by them.  Commissions or discounts paid
in connection with the sale of securities by the Selling Stockholders will be
determined by negotiations between them and the broker-dealer through or to
which the securities are to be sold and may vary depending on the broker-
dealers' commission or mark up schedule, the size of the transaction, and
other factors.  (See "PLAN OF DISTRIBUTION" below.)

     The Selling Stockholders and any broker, dealer, or agent that
participates with the Selling Stockholders in the sale of the Common Stock
offered hereby may be deemed "underwriters" within the meaning of the
Securities Act of 1933, as amended ( the "Securities Act"), and any commission
or discounts received by them and any profit on the resale of the Common Stock
purchased by them may be deemed to be underwriting commissions under the
Securities Act. (See "SELLING STOCKHOLDERS" and "PLAN OF DISTRIBUTION").

AVAILABLE INFORMATION
The Company is subject to the reporting requirements of the Securities
Exchange Act of 1934, as amended, and accordingly files reports, proxy
statements, and other information with the Securities and Exchange Commission
(the "Commission").  Such reports, proxy statements, and other information
filed with the Commission are available for inspection and copying at the
public reference facilities maintained by the Commission at Room 1024, 450
Fifth Street N.W., Judiciary Plaza, Washington, D.C.  20549, and at certain of
the Commission's regional offices located at Northwestern Atrium Center, 500
West Madison Street, Suite 1400, Chicago, Illinois  60604; and 7 World Trade
Center, New York, New York  10048, upon payment of the charges prescribed
therefor by the Commission.

The Company is also subject to the electronic filing requirements of the
Commission.  The commission maintains a Web site that contains reports, proxy
and information statements, and other information regarding issuers that file
electronically.  The address of the Web site is http://www.sec.gov.

The Common Stock of the Company is currently traded in the over-the-counter
market and is quoted on NASDAQ, SmallCap Market.  Reports, proxy statements
and other information filed by the Company therewith can be inspected at the
National Association of Securities Dealers, Inc. 1735 K Street N.W.,
Washington , D.C.  20006.

                                        4
<PAGE>

INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
The following documents filed by the Company (File No. 0-6088) with the
Commission are incorporated herein by reference.
     1.  The Company's annual report on Form 10-KSB, as amended, for the year
ended December 31, 1996 ("1996 10-KSB").
     2.  The Company's quarterly reports on Form 10-QSB for the quarters ended
March 31, 1997 and June 30, 1997.
     3.  The Company's current report on Form 8-K, as amended, dated April 30,
1997 reporting the acquisition of ADA Environmental Solutions LLC.
     4.  A description of the Company's Common Stock contained in the
Registration Statement on Form 8-A as declared effective by the Securities and
Exchange Commission.
     5.  All documents filed by the Company pursuant to Section 13(a), 13(c),
14 and 15(d) of the Exchange Act subsequent to the date of this Prospectus and
prior to the termination of the offering of the Common Stock shall be deemed
to be incorporated by reference into this Prospectus and to be a part hereof
from the date of filing of such documents.

Any statement contained in a document incorporated or deemed to be
incorporated by reference herein shall be deemed to be modified or superseded
for purposes of this Prospectus to the extent that a statement contained
herein or in any other subsequently filed document which also is or is deemed
to be incorporated by reference herein modifies or supersedes such statement.
Any such statement so modified or superseded shall not be deemed, except as so
modified or superseded, to constitute a part of this Prospectus.

The Company will provide without charge to each person, including any
beneficial owner, to whom a Prospectus is delivered, upon written or oral
request of such person, (i) a copy of the Company's annual and quarterly
reports as filed with the Commission, and/or (ii) a copy of any or all of the
documents which are incorporated by reference herein, other than exhibits to
such documents which are not specifically incorporated by reference therein.
The annual reports on Form 10-KSB include audited financial statements of the
Company.  Requests should be directed to Earth Sciences, Inc., 910 12th
Street, Golden, Colorado  80401,  Attention:  Investor Relations (telephone
303-279-7641).

                        _________________________________

No person is authorized to give any information or make any representation not
contained  in  this prospectus and, if given or made, such information  should
not be relied upon as having been authorized.

THE COMPANY
Earth Sciences, Inc. (the "Company") is a diversified mineral exploration  and
development company specializing in chemical processing, air pollution control
and mineral exploration.  Production of purified phosphate products in Calgary
commenced  in  June  1997.  The Company was incorporated  under  the  name  of
Colorado Central Mines, Inc. in Colorado in 1957.  Current activities  of  the
Company include (1) the start-up and progress toward routine operation of  its
recently  modified  solvent  extraction  facility  in  Calgary,  Alberta   for
production   of   purified  phosphate  products;  (2)  continued   exploration
activities  for  gold and diamond resources in Venezuela  including  its  land
contract  covering approximately 1200 acres; (3) drilling and further geologic
evaluation  of  the  Cerro Gordo property in Inyo County, California  (4)  the
recent acquisition of ADA Environmental Solutions LLC ("ADA"), a company  that
provides  flue  gas conditioning technology for coal-fired boilers  and  other
applications,  and (5) maintenance of its position in several mining  deposits
and prospects in the Western US.

The  Company's  solvent  extraction facility in  Calgary,  Alberta,  recovered
uranium  from  phosphoric  acid  during the period  from  1983  through  1987.
Uranium  oxide production was suspended in the fall of 1987 when the  adjacent
fertilizer  plant  from which the facility received its feed  stock  suspended
operations.   The  contract under which the uranium was sold was  modified  in
1990  to  allow  unrestricted alternative use of the  facility.   An  in-house
feasibility study, completed in 1995, confirmed the technical and financial

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<PAGE>
feasibility  of  conversion  of the facility for the  production  of  purified
phosphate  products.   Revamp of the facility to  allow  such  production  has
recently  been  completed. The Calgary facility is currently in  the  start-up
phase  for  the  production of purified phosphate products,  and  met  certain
technical parameters to demonstrate the capability of a planned initial annual
production  rate  of 18,400 tons of product in late May 1997.   Shake-down  of
various unit operations is underway and routine production is expected  to  be
achieved during the third quarter of 1997.  Sales of products are keeping pace
with  the current less than routine production.  The Company intends to pursue
the  recovery  of  other  valuable elements in the  feed  stock  once  routine
production and cash flow are achieved.  Initial investigation of such recovery
potential is estimated to cost between $20,000-$50,000 and is expected  to  be
funded out of internally generated cash flow. Routine sales are expected to be
achieved  in  September and October, but there can be no assurances  that  the
Company will be able to achieve routine production, or the projected level  of
sales or cash flow.

RECENT DEVELOPMENTS

                           Investor Relation Services
In  August  1997,  the Company renewed its engagment with Corporate  Relations
Group,  Inc.  ("CRG")  of  Winter Park, Florida to provide  investor  relation
services  for  the  Company over a 5 year period.  The services  include  wide
circulation  advertising, broker relations and direct marketing.  In  addition
to  certain  cash  payments, the Company issued CRG 320,000 shares  of  Common
Stock.  This Prospectus includes the resale of shares of Common Stock held  by
CRG.

                         Sale of Convertible Debentures
In  August and September 1997, the Company issued $1,990,000 of 4% convertible
debentures  (the "Debentures") for which the Company received net proceeds  of
approximately  $1,830,000.   The Debentures were  issued  to  provide  working
capital for the Calgary facility for production of purified phosphate products
and  obligations  associated  with  the recently  completed  ADA  acquisition.
Interest  on  the  Debentures is payable quarterly.   Due  to  the  difference
between  the fair market value of the Common Stock on the date the  Debentures
were  sold  and  the conversion price, the Company will recognize  a  deferred
financing  cost  of $663,000 in the third quarter of 1997. The Debentures  are
convertible  at  any time following 45 days after the issuance  thereof.   The
deferred financing cost is being amortized over the 45 day period ending  when
the  Debentures are convertible. The Debentures mature on August 31, 1998. The
Debentures are convertible into shares of Common Stock based on a 25% discount
from  the market price of the Common Stock at the time of conversion, but  not
in excess of $2.50 per share.  The Company may repurchase the Debentures at  a
25%  premium if the market price of the Common Stock is below $1.50 per  share
for  any  two trading days out of a five trading day period.  This  Prospectus
includes the resale of shares of Common Stock  issuable by the Company on  the
conversion of the Debentures.

The principal executive offices of the Company are located at 910 12th Street,
Golden, Colorado  80401, and its telephone number is (303) 279-7641.

FORWARD-LOOKING STATEMENTS

In  addition  to  historical information, this Prospectus  and  the  documents
incorporated  herein  by  reference contain forward-looking  statements.   The
forward-looking statements contained herein are subject to certain  risks  and
uncertainties that could cause actual results to differ materially from  those
in the forward-looking statements.  Factors that might cause such a difference
include, but are not limited to, those discussed in the section entitled "RISK
FACTORS" set forth below.  Investors are cautioned not to place undue reliance
on  these forward-looking statements, which reflect management's analysis only
as  of  the date of such statements.  The Company undertakes no obligation  to
publicly  revise  these  forward-looking  statements  to  reflect  events   or
circumstances that arise after the date of such statements.

RISK FACTORS
An investment in the Shares is speculative and involves a high degree of risk.
In  analyzing  the  offering, prospective investors should  read  this  entire
Prospectus and the information incorporated herein by

                                        6
<PAGE>
  reference, and carefully consider, among others, the following risk  factors
in addition to the other information set forth elsewhere in this Prospectus.

                     Specifics Risks Related to the Company
No  Dividends.  The Company has paid no cash dividends on its Common Stock and
has  no  present intention of paying cash dividends in the foreseeable future.
It  is the present policy of the Board of Directors to retain all earnings  to
provide  for  the  growth of the Company.  Payments of cash dividends  in  the
future  will  depend, among other things, upon the Company's future  earnings,
requirements for capital improvements, the operating and financial  conditions
of the Company and other factors deemed relevant by the Board of Directors.

Lack  of Profitability.  While the Company reported net income in fiscal 1995,
the  Company's operating history has resulted in losses from operations in the
fiscal years ending December 31, 1988 through 1994 and in 1996.  While certain
of  the Company's operations may be profitable during a given fiscal year, the
Company's  operations as a whole may be unprofitable due  to  exploration  and
development  costs  on  properties  from  which  no  revenue  is  derived,  to
continuing corporate general and administrative costs and to interest  expense
associated with long term debt.

Dilutive Effect of Issuance of Additional Shares on Current Shareholders.  The
Board  of  Directors  has the authority to authorize the  offer  and  sale  of
additional  securities without the vote of or notice to existing shareholders,
and  it  is likely that additional securities will be issued to provide future
financing  or  in  connection with acquisitions.  The issuance  of  additional
securities could dilute the percentage interests and per share book  value  of
existing  shareholders,  including  persons  purchasing  securities  in   this
offering.

Volatility  of  Price for Common Stock.  The market price for  shares  of  the
Company's  Common Stock may be highly volatile depending on news announcements
or changes in general market conditions.  In recent years the stock market has
experienced extreme price and volume fluctuations.

          Risks Related to the Exploration and Development of Minerals
Nature  of Mineral Exploration and Development; No Proven Commercially  Viable
Reserves  Yet  Discovered  on  the  Company's  Mineral  Properties  (with  the
exception  of  the  San Luis gold mine).  Exploration for minerals  is  highly
speculative  and  may involve greater risks than many other businesses.   Many
exploration  programs,  including  those which  have  been  conducted  by  the
Company,   do   not  result  and  have  not  resulted  in  the  discovery   of
mineralization  and  any mineralization discovered may not  be  of  sufficient
quantity or quality to be profitably mined.  The Company's mineral exploration
and  development  activities are subject to all of the operating  hazards  and
risks  normally incident to such activities, such as encountering  unusual  or
unexpected formations, environmental pollution, personal injury and  flooding.
All  of  these  factors may result in losses in relation to the amounts  spent
which  are not recoverable.  With the exception of the San Luis gold mine,  no
commercially viable reserves have yet been discovered on the Company's mineral
properties.

Competition and Scarcity of Mineral Lands.  Many companies and individuals are
engaged  in  mineral exploration and development, including large, established
mining  companies  with  substantial capabilities and long  earnings  records.
There  is  a  limited  amount of desirable mineral lands available  for  claim
staking, lease or other acquisition in the United States ("US"), Venezuela and
other  areas where the Company contemplates conducting exploration activities.
The  Company  may  be  at  a  competitive disadvantage  in  acquiring  mineral
properties since it must compete with these individuals and companies, many of
which  have greater financial resources and larger technical staffs  than  the
Company.   From  time  to  time,  specific properties  or  areas  which  would
otherwise  be  attractive to the Company for exploration  or  acquisition  are
unavailable due to their previous acquisition by other companies.

Fluctuation  in  the  Price  of Minerals.  The market  price  of  minerals  is
extremely  volatile and beyond the control of the Company.   Gold  prices  are
generally influenced by basic supply/demand fundamentals.  The market dynamics
of  supply/demand can be heavily influenced by economic policy, i.e.,  central
banks

                                        7
<PAGE>
sales/purchases,  political  unrest, conflicts between  nations,  and  general
perceptions  about inflation.  Fluctuating metal prices may have a significant
impact  on  the  Company's  results of operations  and  operating  cash  flow.
Furthermore, if the price of a mineral should drop dramatically, the value  of
the  Company's  properties  which are being explored  or  developed  for  that
mineral  could also drop dramatically, and the Company might not  be  able  to
recover  its investment in those properties.  The decision to put a mine  into
production,  and the commitment of the funds necessary for that purpose,  must
be  made  long  before the first revenues from production  will  be  received.
During  the  last  five years, the average annual market  price  of  gold  has
fluctuated  between  $330  per ounce and $384 per ounce.   Price  fluctuations
between  the  time  that  such  a decision is made  and  the  commencement  of
production  can change completely the economics of the mine.  Although  it  is
possible  to  protect  against  price  fluctuations  by  hedging  in   certain
circumstances, the volatility of mineral prices represents a substantial  risk
in  the  mining  industry generally which no amount of planning  or  technical
expertise  can eliminate.  The Company is not involved in, nor does it  expect
to enter into any hedging activities

Environmental  Controls.  Compliance with environmental  quality  requirements
and  reclamation  laws  imposed  by  federal,  state,  provincial,  and  local
governmental  authorities  may necessitate significant  capital  outlays,  may
materially  affect  the economics of a given property, or may  cause  material
changes  or  delays in the Company's intended activities.   New  or  different
environmental  standards imposed by any governmental authority in  the  future
may adversely affect the Company's activities.

Uncertainty of Title.  Several of the Company's mining properties which are in
the  United States are unpatented mining claims to which the Company, or those
under  which the Company holds its rights, has only possessory title.  Because
title to unpatented mining claims is subject to inherent uncertainties, it  is
difficult  to  determine  conclusively ownership  of  such  claims.   Since  a
substantial portion of all mineral exploration, development and mining in  the
United  States  now  occurs on unpatented mining claims, this  uncertainty  is
inherent in the mining industry.  In addition, in order to retain title to  an
unpatented  mining claim, a claim holder must have met annual assessment  work
requirements ($100 per claim) through September 1, 1992 and must have complied
with  stringent  state and federal regulations pertaining  to  the  filing  of
assessment work affidavits.  Moreover, after September 1, 1992, the  right  to
locate or maintain a claim generally is conditional upon payment to the United
States  of  a  rental fee of $100 per claim per year for each assessment  year
instead  of  performing assessment work.  State law may,  in  some  instances,
still require performance of assessment work.

The  present  status of the Company's properties as unpatented  mining  claims
located on public lands of the U.S. allows the claimant the exclusive right to
mine  and  remove  valuable minerals, such as precious  and  base  metals  and
industrial  minerals, found therein, and also to use the surface of  the  land
solely for purposes related to mining and processing the mineral-bearing ores.
However, legal ownership of the land remains with the U.S.  Accordingly,  with
an  unpatented claim, the U.S. retains many of the incidents of  ownership  of
land,  the U.S. regulates use of the surface, and the Company remains at  risk
that  the  claims  may  be forfeited either to the U.S. or  to  rival  private
claimants due to failure to comply with statutory requirements as to locations
and  maintenance  of  the  claims.  If there  exists  a  valuable  deposit  of
locatable  minerals (which is the requirement for the unpatented claim  to  be
valid  in  the  first  place),  and  provided  certain  levels  of  work   and
improvements have been performed on an unpatented mining claim, the Mining Law
of  1872 authorizes claimants to then seek to purchase the full title  to  the
claim,  thereby  causing  the  claim to become the  private  property  of  the
claimant.  Such full ownership expands the claimant's permissible uses of  the
property (to any use authorized for private property) and eliminates the  need
to  comply  with maintenance and reporting requirements necessary  to  protect
rights in an unpatented claim.

Proposed  Legislation  Affecting the Mining Industry.  For  the  last  several
Congressional  sessions, bills have been repeatedly  introduced  in  the  U.S.
Congress which would supplant or radically alter the provisions of the  Mining
Law  of  1872.   As of March 31, 1997, no such bills have passed,  although  a
number  of  differing  and sometimes conflicting bills are  now  pending.   If
enacted,  such  legislation could substantially increase the cost  of  holding
unpatented mining claims and could impair the ability of

                                        8
<PAGE>
companies to develop mineral resources on unpatented mining claims.  Under the
terms  of  certain proposed legislation, the ability of companies to obtain  a
patent  on  unpatented  mining  claims would  be  nullified  or  substantially
impaired.   Moreover,  certain  forms  of such  proposed  legislation  contain
provisions  for the payment of royalties to the federal government in  respect
of  production from unpatented mining claims, which could adversely affect the
potential  for  development  of such claims and  the  economics  of  operating
existing  mines on federal unpatented mining claims.  The Company's  financial
performance  could  therefore  be  affected  adversely  by  passage  of   such
legislation.   It is impossible to predict at this point what  any  legislated
royalties  might  be,  but a potential three to four  percent  gross  royalty,
assuming a gold price of $400 per ounce, would have an approximated $12 to $16
per  ounce  impact  on the Company's costs of any production  from  unpatented
mining claims.

Uncertainty  of Funding for Exploration.  The Company has funded much  of  its
exploration  and  acquisition activities through joint  venture  arrangements,
which  minimize  the cost of such activities to the Company and  allow  it  to
explore and acquire a greater number of properties than it would otherwise  be
able  to explore or acquire on its own.  The Company has also funded a portion
of  its  exploration activities without joint venture participation, resulting
in increased costs to the Company.  The Company has been successful in raising
such  funds for its exploration activities.  Additional funding from  existing
partners  or third parties, however, may be necessary to conduct detailed  and
thorough  evaluations  of, and to develop certain properties.   The  Company's
ability  to  obtain this financing will depend upon, among other  things,  the
price  of  gold and the industry's perception of its future price.  Therefore,
availability  of  funding is dependent largely upon  factors  outside  of  the
Company's control, and cannot be accurately predicted.  The Company  does  not
know from what sources it will derive any required funding.  If the Company is
not able to raise additional funds (as to which there can be no assurance), it
will not be able to fund certain exploration activities on its own.

Uncertainty of Development and Operating Property Economics and Ore Grades  at
Development   Properties.   Decisions  as  to  whether  any  of  the   mineral
development properties which the Company now holds or which it may acquire  in
the  future contain commercially minable deposits, and whether such properties
should  therefore be sold or brought into production, depend upon the  results
of exploration programs and/or feasibility analyses and the recommendations of
duly  qualified engineers or geologists.  Such decisions involve consideration
and  evaluation of several significant factors, including, but not limited to,
the  (a)  costs of bringing a property into production, including  exploration
and  development  work,  preparation  of production  feasibility  studies  and
construction  of  production  facilities,  (b)  availability  and   costs   of
financing, (c) ongoing costs of production, (d) market prices for the  mineral
to  be  produced,  and  (e) the amount and grades of reserves  or  mineralized
material.   There  can be no assurance that any of the development  properties
now  held by the Company, or which may be acquired by the Company, contains  a
commercially  minable  mineral deposit, and therefore no  assurance  that  the
Company will ever generate a positive cash flow from the sale of or production
operations  on such properties. In addition, once a property is  sold  with  a
retained royalty or placed into production, risks still exist that the  amount
and  grade  of its reserves will not actually be as predicted.  To the  extent
that  lower amounts and/or grades of reserves are experienced, costs per  unit
produced  and  profitability can be adversely affected.   Depending  upon  the
extent of such an effect in any of the Company's properties, the Company could
incur a writedown on its investment in any such property.

Termination of Mining at the San Luis Gold Mine.  Royalty income from the  San
Luis  gold mine has been the only significant source of income for the Company
for  the  last  five  years.  The mine is leased to  and  operated  by  Battle
Mountain  Gold Co. ("BMGC").  As reported to the Company by BMGC,  mining  was
completed at the end of October, 1996.  The Company's royalty income from  the
property ceased shortly after that time.

   Risks Related to the Production and Sale of Purified Phosphate Products and
                                       ADA
                                        
Uncertain  Commercial  Viability of Solvent Extraction Process.   The  solvent
extraction  process  developed by the Company for the production  of  purified
phosphoric acid ("PPA") has not been proven on a

                                        9
<PAGE>
commercial  basis  at the Calgary plant.  Although the Company  has  performed
numerous  bench-scale and pilot plant test of the process,  there  can  be  no
assurances that the process will yield satisfactory results when employed on a
commercial scale.

Limited  Experience in Marketing Industrial Chemicals and  Lack  of  Long-term
Sales  Contracts.  The growth and profitability of operations at the Company's
solvent  extraction facility in Calgary will be dependent  upon,  among  other
things,  the sale of purified phosphate products to chemical distributors  and
customers.   The  Company  has  limited  experience  in  marketing  industrial
chemicals  and  will  be  relying on consultants and others  to  initiate  and
maintain sales contacts.  PPA is not typically sold under long-term contracts,
and  the  Company  does  not have any long-term commitments  to  purchase  its
planned  products.   There  can be no assurances  that  the  Company  will  be
successful in its sales efforts.

Supply  of  Raw Materials. The growth and profitability of operations  at  the
Company's solvent extraction facility in Calgary will be dependent upon, among
other  things,  the  availability of sufficient raw  materials  at  reasonable
prices.   The  Company has negotiated a renewable annual supply contract  with
Farmland  Industries ("Farmland") and a supply arrangement  with  Agrium  U.S.
Inc.  ("Agrium")  to supply the estimated requirement of superphosphoric  acid
("SPA").   The contract with Farmland contains provisions that allow extension
of  the  contract  in the future or termination upon a 90 day written  notice.
There  can  be  no  assurances that the Company will be able  to  extend  this
contract  and  supply  arrangement  in the  future  and/or  obtain  sufficient
quantities of SPA at reasonable prices.

Ability  to  Expand Geographically. The growth and profitability of operations
at  the  Company's  solvent extraction facility in Calgary will  be  dependent
upon,  among  other things, the ability to become the predominate supplier  of
PPA in the geographic region surrounding Calgary and on the US West Coast, and
to  sell on an increasing basis to the Minneapolis/Chicago area.  There can be
no assurance that the Company's efforts to expand sales can be accomplished on
a profitable basis.

Competition.   The  Company's purified phosphate  products  will  be  sold  in
markets  that  are  highly  competitive.  The  principal  competitive  factors
include product quality, price and distribution capabilities.  There can be no
assurances  that  the  Company  will be able to compete  successfully  against
current  and  future  competitors based on these factors.   The  Company  will
compete  with several domestic and international producers, many of whom  have
substantially  greater  financial,  production,  distribution  and   marketing
resources  than  the  Company.  Increased competition could  result  in  price
reductions, reduced margins and loss of market share, all of which could  have
a  material adverse affect on the Company's business, financial condition  and
results of operations.

Effect of Potential Lack of Demand for ADA's Services.  If there is no demand,
or  the  demand  is  less  than projected, for ADA's  services  for  flue  gas
conditioning, the Company will not recognize the synergies expected  from  its
acquisition,  because ADA will not be able to utilize the  Company's  purified
phosphate products.

THE OFFERING

     Common Stock outstanding prior to the offering ...... 9,420,385 Shares
     Common Stock offered by the Selling Shareholders..... 1,776,417 Shares(1)
     Common Stock to be outstanding after the offering... 10,797,052 Shares(2)
- -----------------------------------
(1)  Of the 1,776,417 shares of Common Stock offered by the Selling
Shareholders, 399,750 shares are currently issued and outstanding, a maximum
of 1,326,667 are issuable on the conversion of the Debentures, and the
remaining 50,000 are issuable on exercise of options for gross proceeds to the
Company, if all such options were exercised, of $125,000.
(2)  Includes up to 50,000 shares of Common Stock issuable on the exercise of
outstanding options at a exercise price of $2.50 per share.

                                       10
<PAGE>

USE OF PROCEEDS

The  options  held by Selling Shareholders  must be exercised into  shares  of
Common  Stock prior to the resale of the Common Stock offered by  the  Selling
Shareholders pursuant to this offering.   Proceeds received by the Company  on
the  exercise of options, aggregating $125,000, if all options held by Selling
Shareholders  are exercised, will be used by the Company to  pay  general  and
administrative expenses, to the extent not funded from operating revenue,  and
for  additional  mineral  exploration  and  development.   There  can  be   no
assurances  that any of the outstanding options will be exercised  to  provide
any proceeds therefrom to the Company.

SELLING STOCKHOLDERS

The  following  table provides certain information, as of  the  date  of  this
prospectus,  respecting the Selling Stockholders, the shares of  Common  Stock
held by them or to be held, to be sold, and to be held following the offering,
assuming  the sale by such Selling Stockholders of all Shares of Common  Stock
offered.

                                                               Shares Owned
            Securities Owned Prior to the Offering (1)       After Offering(1)
                                                      Shares
                     Common                           to be
Selling Stockholders Stock(2) Options(3) Debentures(4)Offered Number      %
______________________________________________________________________________
Arcadia Mutual
 Fund, Inc.(5)         -         -          333,333  333,333        0     -
James F. Cool          -         -          100,000  100,000        0     -
Corporate Relations
 Group, Inc.(6)     405,500      -              -     320,000  85,500     *
Jimmy D. Dowda         -         -           33,333   33,333        0     -
Gulf Atlantic
 Publishing Inc.(7)  60,000      -              -      60,000       0     -
Matthew P.T.
 Holstein (8)          -         -           46,667    46,667       0     -
Philip M. Holstein(9)  -         -           76,667    76,667       0     -
Charkles Kerr          -         -           26,667    26,667       0     -
Bruce R. Knox          -         -           33,333    33,333       0     -
Russell G. Kraus       -         -           16,667    16,667       0     -
Frederick A. Lenz      -         -           33,333    33,333       0     -
Keith A. Mazer (10)   5,000      -           50,000    50,000   5,000     *
Pegasus Investment
 Holdings Ltd. (11)    -         -          150,000   150,000       0     -
Thomas W. Richardson   -         -           26,667    26,667       0     -
Barry Seidman          -         -          266,667   266,667       0     -
Joseph Sloves          -         -           33,333    33,333       0     -
Toron Co. Ltd. (12)    -         -          100,000   100,000       0     -
World Capital
 Funding, Inc.(10)   56,850    50,000          -       69,750  37,100     *
______________________________________________________________________________
  Totals            527,350    50,000     1,326,667 1,776,417 127,600   1.4%
==============================================================================
* Less than one percent
(1)  Shares owned prior to the offering include all shares of Common Stock
owned by the Selling Shareholder.  Shares owned after the offering assume the
sale of all shares of Common Stock offered pursuant to this offering.
Percentage figures representing the securities owned after the offering give
effect to the exercise of all options by that Selling Shareholder.
(2)  Includes 127,600 shares of Common Stock held by Selling Stockholders not
offered in this offering.
(3)  Consists of options to purchase 50,000 shares of Common Stock at an
exercise price of $2.50 per share.
(4)  The Debentures are convertible at any time following 45 days after
issuance. The Debentures mature on August 31, 1998. The Debentures are
convertible into shares of Common Stock based on a 25% discount from the
market price of the Common Stock at the time of conversion, but not in excess
of $2.50

                                       11
<PAGE>
per share.  The Debentures must be converted into shares of Common Stock
before resale of the Common Stock offered by the Selling Stockholder pursuant
to this offering.
(5) Arcadia Mutual Fund, Inc. is beneficially owned by a number of non-US
persons.
(6)  Corporate Relations Group, Inc. is a wholly-owned subsidiary of Stratcom
Media Ltd., a public company; its president is Joseph H. Landis.
(7) Gulf Atlantic Publishing Inc. is a wholly-owned subsidiary of Stratcom
Media Ltd., a public company; its president is Joseph H. Landis.
(8)  Included in the shares shown are 13,333 for which Mr. Matthew Holstein is
the trustee of the Matthew Holstein Pension Plan.
(9) Included in the shares shown are 16,667 for which Mr. Philip Holstein is
the trustee of the Castle Creek Valley Ranch Defined Benefit Pension Plan.
(10) Keith Mazer is the President and controlling shareholder of World Capital
Funding, Inc.
(11) Pegasus Investment Holdings Ltd. is beneficially owned by a number of non-
US persons.
(12)  Toron Co. Ltd. is beneficially owned by a number of non-US persons.

PLAN OF DISTRIBUTION

This  Prospectus relates to the public offer and sale by certain  shareholders
(the  "Selling  Shareholders") of an aggregate of 1,776,417 shares  of  Common
Stock of the Company issuable on conversion of the Debentures for a maximum of
1,326,667  shares  of Common Stock, upon the exercise of options  to  purchase
50,000  shares  of Common Stock and 399,750 shares of Common  Stock  currently
held by Selling Shareholders.

The  Common Stock to be sold by the Selling Shareholders  may be sold by  them
from  time  to  time  directly  to  purchasers.   Alternatively,  the  Selling
Shareholders may, from time to time, offer the Common Stock through dealers or
brokers, who receive compensation in the form of commissions from the  Selling
Shareholders and/or the purchasers of the Common Stock for whom  they  act  as
agents.  As of the date hereof, no Selling Shareholder has advised the Company
that  it  has entered into any agreement or understanding with any  dealer  or
broker  for  the offer or sale of the Common Stock.  The Selling  Shareholders
may  enter into such agreements or understandings in the future.  The  Selling
Shareholders  may  also offer some or all of the Common Stock  through  market
transactions on Nasdaq, on which the Company's Common Stock is traded.   Sales
of  the  Common  Stock through brokers may be made by any  method  of  trading
authorized  by  Nasdaq,  including block trading in  negotiated  transactions.
Without limiting the foregoing, such brokers may act as dealers purchasing any
or  all of the Common Stock covered by this Prospectus.  Sales of Common Stock
are,  in  general, expected to be made at the market price prevailing  at  the
time  of each such sale; however, prices in negotiated transactions may differ
considerably.   No  Selling  Shareholder  has  advised  the  Company  that  it
anticipates paying any consideration, other than usual and customary  broker's
commissions,  in  connection  with sales of the  Common  Stock.   The  Selling
Shareholders are acting independently of the Company in making decisions  with
respect to the timing, manner and size of each sale.

DESCRIPTION OF COMMON STOCK

The  authorized capital stock of the Company consists of 25,000,000 shares  of
Common  Stock,  $0.01 par value per share.  All of the issued and  outstanding
stock of the Company is fully paid and nonassessable.  Holders of Common Stock
are  entitled  to  receive dividends, when and if declared  by  the  Board  of
Directors,  out of funds legally available therefore and to share  ratably  in
the  net  assets of the Company upon liquidation.  Holders of Common Stock  do
not  have preemptive rights to subscribe for additional shares, nor are  there
any  redemption or sinking fund provisions associated with the  Common  Stock.
There  are  currently  9,420,385 shares of Common Stock outstanding  owned  by
approximately 3,000 persons and/or entities.

Holders  of  Common Stock are entitled to one vote per share  on  all  matters
requiring  a vote of the shareholders.  Since the Common Stock does  not  have
cumulative  voting rights in electing directors, the holders of  more  than  a
majority of the outstanding shares of Common Stock voting for the election  of
directors can elect all of the directors whose terms expire that year, if they
so choose.

LEGAL MATTERS
Certain  legal matters with respect to the legality of the securities  offered
hereby and the organization and existence of the Company have been passed upon
for  the  Company by Parcel, Mauro, Hultin & Spaanstra, P.C., 1801  California
Street, Suite 3600, Denver, Colorado  80202.

EXPERTS
The  consolidated financial statements which are incorporated by reference  in
this  prospectus by reference from the Company's Annual Report on Form 10-KSB,
as amended, for the year ended December 31, 1996, have been audited by Hein  +
Associates LLP, certified public accountants, as stated in their report, which
are  incorporated  herein  by  reference, and have  been  so  incorporated  in
reliance  upon  such  report given the authority of that firm  as  experts  in
accounting and auditing.

                                       13
<PAGE>
PART II
INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14.  Other Expenses of Issuance and Distribution.

      The  following  table  sets forth the various expenses  payable  by  the
Registrant  in  connection with the sale and distribution  of  the  securities
being  registered.   All  of the amounts shown are estimated  except  for  the
Securities and Exchange Commission registration fee.  The Selling Shareholders
will not be paying any of these expenses.

          SEC registration fee          $ 1,267.30
          Printing and mailing expenses $   500.00
          Legal fees and expenses       $ 2,000.00
          Accounting fees and expenses  $ 2,000.00
                                        ----------
          Total                         $ 5,767.30
                                        ==========

Item 15.  Indemnification of Directors and Officers.

      Article  7-109  of the Colorado Business Corporation Act authorizes  the
indemnification of directors and officers against liability incurred by reason
of  being  a  director  or officer and against expenses (including  attorney's
fees), judgments, fines and amounts paid in settlement and reasonably incurred
in connection with any action seeking to establish such liability, in the case
of third-party claims, if the officer or director acted in good faith and in a
manner he reasonably believed to be in or not opposed to the best interests of
the  corporation,  and  in the case of actions by  or  in  the  right  of  the
corporation, if the officer or director acted in good faith and in a manner he
reasonably  believed  to be in or not opposed to the  best  interests  of  the
corporation  and  if  such officer or director shall not  have  been  adjudged
liable   to   the   corporation,   unless  a   court   otherwise   determines.
Indemnification  is  also authorized with respect to any  criminal  action  or
proceeding  where  the  officer or director also had no  reasonable  cause  to
believe his conduct was unlawful.

      The above discussion of the Colorado Business Corporation Act is only  a
summary and is qualified in its entirety by the full text of the foregoing.

Article VIII of the Registrant's Bylaws provides as follows:

      Each  past,  present and future director and officer of the  corporation
shall  be indemnified by the corporation against all expenses, penalties,  and
liabilities, including attorneys' fees, reasonably incurred by or imposed upon
him  in  connection  with any actual or threatened claim,  demand,  action  or
proceeding,  whether civil or criminal, or in connection with  any  settlement
thereof,  to which he may be made a party, or in which he may become involved,
by  reason  of  his  being  or  having been  a  director  or  officer  of  the
corporation,  whether  or not he is a director or officer  at  the  time  such
expenses,  penalties or liabilities are incurred, except  in  cases  where  he
shall  be  finally  adjudged in such action or proceeding  to  be  liable  for
willful  misconduct  in  the performance of his duties  as  such  director  or
officer.   The right of indemnification herein provided shall be  in  addition
to,  and  not exclusive of, all other rights to which such director or officer
may  be entitled and the right of indemnification herein provided shall  inure
to  the  benefit  of  the personal representatives of deceased  directors  and
officers.

                                       14
<PAGE>
Item 16.  Exhibits.

Exhibit
Number              Description
3.1       Amended and Restated Certificate of Incorporation of the Company (1)
3.2       Bylaws of the Company, as amended  (2)
4.1       Specimen Common Stock Certificate (3)
5.1**     Opinion of by Parcel, Mauro, Hultin & Spaanstra, P.C. as to legality
          of the shares
23.1**    Consent of Hein + Associates LLP
23.2*     Consent of by Parcel, Mauro, Hultin & Spaanstra, P.C. (contained in
          Exhibit 5.1)

 .
**  Filed herewith.
- ------------------------------------------------------------------------------
(1)  Incorporated by reference from the Company's Annual Report on Form 10-KSB
for the year ended December 31, 1996.
(2)  Incorporated by reference from the Company's Annual Report on Form 10-KSB
for the year ended December 31, 1993.
(3)   Incorporated  by  reference  from the Company's  Form  S-3  Registration
Statement, Registration No. 333-25465 declared effective July 23, 1997.


Item 17.  Undertakings.

     The undersigned registrant hereby undertakes:
      (1)  To file, during any period in which offers or sales are being made,
a  post-effective  amendment to this registration  statement  to  include  any
material  information with respect to the plan of distribution not  previously
disclosed  in  the  registration statement or  any  material  change  to  such
information in the registration statement.
      (2)   That,  for  the  purposes of determining any liability  under  the
Securities  Act of 1933 (the "Act"), each such post-effective amendment  shall
be  deemed  to  be  a  new registration statement relating to  the  securities
offered  therein, and the offering of such securities at that  time  shall  be
deemed to be the initial bona fide offering thereof.
      (3)   To remove from registration by means of a post-effective amendment
any  of the securities being registered which remain unsold at the termination
of the offering.
      (4)   That,  for purposes of determining liability under the  Act,  each
filing  of the registrant's annual report pursuant to section 13(a) or section
15(d)  of  the  Securities Exchange Act of 1934 (and  where  applicable,  each
filing  of an employee benefit plan's annual report pursuant to section  15(d)
of  the Securities Exchange Act of 1934) that is incorporated by reference  in
the  registration statement shall be deemed to be a new registration statement
relating  to  the  securities  offered  therein,  and  the  offering  of  such
securities  at that time shall be deemed to be the initial bona fide  offering
thereof.
      (5)  That, insofar as indemnification for liabilities arising under  the
Act  may  be permitted to directors, officers and controlling persons  of  the
Registrant  pursuant to the foregoing provisions, or otherwise, the Registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Act and  is,
therefore,  unenforceable.   In the event that  a  claim  for  indemnification
against such liabilities (other than the payment by the Registrant of expenses
incurred  or  paid  by  a  director, officer  or  controlling  person  of  the
Registrant  in  the successful defense of any action, suit or  proceeding)  is
asserted  by  such director, officer or controlling person in connection  with
the securities being registered, the Registrant will, unless in the opinion of
its counsel the matter has been settled by controlling precedent, submit to  a
court of appropriate jurisdiction the question whether such indemnification by
it  is  against public policy as expressed in the Act and will be governed  by
the final adjudication of such issue.

                                       15
<PAGE>
SIGNATURES

      Pursuant to the requirements of the Securities Act of 1933, as  amended,
the Registrant hereby certifies that it has reasonable grounds to believe that
it  meets  all of the requirements for filing on Form S-3 and has duly  caused
this  Registration Statement and any amendment thereto to  be  signed  on  its
behalf  by the undersigned, thereunto duly authorized, in the City of  Golden,
State of Colorado on September 8, 1997.

                              EARTH SCIENCES, INC.


Date:  September 8, 1997      /s/  Ramon E. Bisque
                              -----------------------------------------------
                              Ramon E. Bisque
                              Principal Executive Officer

Date: September 8, 1997       /s/  Mark H. McKinnies
                              ----------------------------------------------
                              Mark H. McKinnies
                              President, Principal Financial and
                              Accounting Officer

      Pursuant to the requirements of the Securities Exchange Act of 1933,  as
amended, this Registration Statement and any amendment thereto has been signed
below by the following persons in the capacities and on the dates indicated.

Date: September 8, 1997       /s/  Ramon E. Bisque
                              -----------------------------------------------
                              Ramon E. Bisque, Director

Date: September 8, 1997       /s/  Duane N. Bloom
                              -----------------------------------------------
                              Duane N. Bloom, Director

Date: September 8, 1997       /s/  Michael D. Durham
                              -----------------------------------------------
                              Michael D. Durham, Director

Date: September 8, 1997       /s/  Robert H. Lowdermilk
                              -----------------------------------------------
                              Robert H. Lowdermilk, Director

Date: September 8, 1997       /s/  Mark H. McKinnies
                              -----------------------------------------------
                              Mark H. McKinnies, Director

                                       16
<PAGE>

                                                                   Exhibit 5.1
                     Parcel, Mauro, Hultin & Spaanstra, P.C.
                                Attorneys at Law
                                   Suite 3600
                             1801 California Street
                          Denver, Colorado  80202-2636
                            Telephone (303) 292-6400
                            Telecopier (303) 295-3040
                                        
                                September 8, 1997
                                        
Earth Sciences, Inc.
910 12th Street
Golden, Colorado  80401

Re:  Registration Statement on Form S-3
     Covering the Registration of 1,776,417
     Common Shares of Earth Sciences, Inc.

Gentlemen and Ladies:

     We have acted as counsel for Earth Sciences, Inc., a Colorado corporation
(the "Company"), in connection with the registration for sale of 1,776,417
shares of the Company's Common Stock (the "Securities") in accordance with the
registration provisions of the Securities Act of 1933, as amended.

     In such capacity we have examined, among other documents, the Articles of
Incorporation and By Laws of the Company, records of corporate proceedings,
the Registration Statement on Form S-3 filed by the Company with the
Securities and Exchange Commission on or about September 8, 1997, (as may be
further amended from time to time, the "Registration Statement"), covering the
registration of the Securities.  We have also made such other investigations
and reviewed such other documents as we have deemed necessary in order to
express the opinions set forth below.

     Based upon the foregoing and upon such further examinations as we have
deemed relevant and necessary, we are of the opinion that:

     1.   The Company is a corporation duly organized and validly existing
under the laws of the State of Colorado.

     2.   The Securities have been legally and validly authorized under the
Company's Articles of Incorporation, as amended, and constitute (or will
constitute upon due exercise of the options or convertible debentures as
described in the Registration Statement) duly and validly issued and
outstanding and fully paid and nonassessable shares of the Company under the
Colorado Business Corporation Act.

<PAGE>

Earth Sciences, Inc.
September 8, 1997
Page 2


     We hereby consent to the use of our name beneath the caption "Legal
Matters" in the Prospectus forming a part of the Registration Statement and to
the filing of a copy of this opinion as Exhibit 5.1 thereto.

                         Very truly yours,

                               /s/ Parcel, Mauro, Hultin & Spaanstra, P.C.
                              Parcel, Mauro, Hultin & Spaanstra, P.C.
                                        


<PAGE>
                                                                  Exhibit 23.1
                                                                              
                          INDEPENDENT AUDITOR'S CONSENT
                                        
We  consent to the incorporation by reference of our report dated February  3,
1997 accompanying the financial statements of Earth Sciences, Inc. to Form S-3
Registration Statement of Earth Sciences, Inc. and to the use of our name  and
the statements with respect to us, as appearing under the heading "Experts" in
the Registration Statement.

/s/  Hein + Associates LLP
HEIN + ASSOCIATES

Denver, Colorado
September 4, 1997
<PAGE>


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