INTERNATIONAL ISOTOPES INC
10QSB, 1998-05-15
IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES
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                                  FORM 10-QSB

                         SECURITIES EXCHANGE COMMISSION
                             Washington, D. C. 20549

                QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                         For the quarterly period ended
                                 March 31, 1998

                             Commission file number:

                                 333-26269 SB-2

                           INTERNATIONAL ISOTOPES INC.
             (Exact name of registrant as specified in its charter)

<TABLE>
<CAPTION>
          Texas                                           74-2763837
<S>                                         <C>
(State of incorporation)                    (IRS Employer Identification Number)

3100 Jim Christal Rd.
Denton,
Texas                                                            76207
(Address of principal executive offices)                       (zip code)
</TABLE>

                                  940-484-9492
              (Registrant's telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15 (d) of the Securities Exchange Act of 1934
during the preceding 12 months (or for such shorter period that the registrant
was required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days. YES x   NO

As of March 31,1998 the aggregate market value of the common stock of the
registrant held by non-affiliates of the registrant as determined by reference
to the closing price of Common Stock as reported on the Nasdaq Small Cap Market
System, was $108,069,719. As of March 31, 1998 the number of shares of common
stock, $.01 par value, outstanding was 6,370,950.

*Registrant became subject to the filing requirements of the Securities Exchange
Act of 1934 on August 14, 1997, when its Registration Statements on Form SB-2
and Form 8-A were declared effective by the Commission.


<PAGE>



INTERNATIONAL ISOTOPES INC.

TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                            Page No.

<S>                                                                         <C>
PART I  -  FINANCIAL INFORMATION:

      Item 1 - Financial Statements:

               Condensed Consolidated Balance Sheets at March 31, 1998          3
               (unaudited) andDecember 31, 1997

               Condensed Consolidated Statements of Operations for the          4
               Three Months Ended March 31, 1998 and 1997 and for the
               period from November 1, 1995 (inception) through
               March 31, 1998.

               Condensed Consolidated Statements of Cash Flows for the Three    5
               Months Ended March 31, 1998 and 1997 and for the
               period from November 1, 1995 (inception) through
               March 31, 1998.


        (1) Notes to Condensed Consolidated Financial Statements (unaudited).   7

        Item 2 - Management's Discussion and Analysis of Financial              9
                 Condition and Results of Operations

PART II - OTHER INFORMATION:

        Item 5. Other Information                                              13

        Item 6. Exhibits and Reports on Form 8-K                               14
</TABLE>


<PAGE>




                   INTERNATIONAL ISOTOPES INC. AND SUBSIDIARY
                         (development stage enterprises)
                      Condensed Consolidated Balance Sheets

<TABLE>
<CAPTION>
                              Assets                                        March 31,     December 31,   
                              ------                                           1998            1997      
                                                                           (unaudited)                   
                                                                           ------------    ------------  
<S>                                                                        <C>             <C>           
Current assets:                                                                                          
   Cash and cash equivalents                                               $  8,530,554    $  8,201,417  
   Securities available for sale, at fair value                                 277,803       5,082,777  
   Interest receivable                                                           61,143         152,358  
   Accounts receivable                                                           50,000              --  
   Assets held for sale                                                         537,577         564,932  
   Inventory                                                                    748,853         741,853  
   Other                                                                         61,725          97,941  
                                                                           ------------    ------------  
               Total current assets                                          10,267,655      14,841,278  
                                                                                                         
Property, plant and equipment, net:                                                                      
   Property consisting of land                                                  663,674         563,674  
   Plant and improvements                                                     4,767,018       2,871,266  
   Furniture and equipment                                                    5,146,747       2,845,820  
                                                                           ------------    ------------  
               Total property, plant and equipment, net                      10,577,439       6,280,760  
                                                                           ------------    ------------  
               Total assets                                                $ 20,845,094    $ 21,122,038  
                                                                           ============    ============  
                                                                                                         
                                                                                                         
               Liabilities and Stockholders' Equity                                                      
               ------------------------------------                                                      
                                                                                                         
Current liabilities:                                                                                     
                                                                                                         
   Accounts payable                                                        $    614,056    $    906,062  
   Accrued liabilities                                                          598,061         602,064  
   Current installments of mortgage and notes payable to banks                  649,992         634,454  
                                                                           ------------    ------------  
                Total current liabilities                                     1,862,109       2,142,580  
Mortgage and notes payable to banks, excluding current installments           3,645,378       3,053,818  
                                                                           ------------    ------------  
                Total liabilities                                             5,507,487       5,196,398  
                                                                                                         
                                                                              
                                                                                                         
Stockholders' equity:                                                                                    
   Preferred stock, $1.00 par value; 5,000,000 shares authorized,                                        
      no shares issued and outstanding                                           --              --      
   Common stock, $.01 par value; 20,000,000 shares authorized;                                           
      issued and outstanding 6,370,950 shares                                    63,709          63,709  
    Additional paid-in capital                                               21,787,337      21,787,337  
    Deficit accumulated during the development stage                         (5,793,439)     (5,205,406) 
       Receivable from stock sales                                             (720,000)       (720,000) 
                                                                           ------------    ------------  
                Total stockholders' equity                                   15,337,607      15,925,640  
                                                                           ------------    ------------  
                Total liabilities and stockholders' equity                 $ 20,845,094    $ 21,122,038  
                                                                           ============    ============  
</TABLE>                                                                   


See accompanying notes to consolidated financial statements.


<PAGE>



                   INTERNATIONAL ISOTOPES INC. AND SUBSIDIARY
                         (development stage enterprises)
                 Condensed Consolidated Statements of Operations
                                  (Unaudited)


<TABLE>
<CAPTION>
                                                                                     Period from
                                                                                      November 1,
                                                                                         1995
                                                                                     (inception)
                                                         Qtr. Ended     Qtr. Ended      through
                                                         March 31,      March 31,      March 31,
                                                            1998           1997           1998
                                                      -----------    -----------    -----------
<S>                                                   <C>            <C>            <C>        
 Development contract income                          $   150,000    $        --    $   150,000
 Sale of accelerator components                                --        128,072        910,889
 Cost of development                                      (62,830)            --        (62,830)
 Cost of accelerator components                                --        (65,656)      (342,749)
                                                      -----------    -----------    -----------
            Gross Profit                                   87,170         62,416        655,310

 Operating costs and expenses:
   Salaries and contract labor                            242,321        677,907      1,276,936
   Employee incentive compensation                             --             --      2,397,500
   Sales and Marketing                                    116,488             --        116,488
   General and administrative                             363,648         63,422      1,321,438
   Consulting fees                                         31,527          3,459        467,130
   Legal and professional fees                             40,502          1,227        135,950
   Rent and security                                        4,591         46,740        285,224
   Commissions and fees                                        --             --         95,315
   Taxes                                                   15,000             --         15,000
   Other                                                       --         19,832        102,567
                                                      -----------    -----------    -----------
             Total operating expenses                     814,077        812,587      6,213,548
                                                      -----------    -----------    -----------
             Loss from development stage operations      (726,907)      (750,171)    (5,558,238)

Other income (expense):
   Gain on sale (donation) of assets held for sale        (20,332)            --        331,006
   Interest income                                        159,206            423        461,947
   Interest expense                                            --        (83,316)      (528,154)
   Loan financing fees                                                                 (750,000)
                                                      -----------    -----------    -----------
             Loss before extraordinary item              (588,033)      (833,064)    (6,043,440)

Extraordinary gain on debt extinguishment                      --             --        250,000
                                                      -----------    -----------    -----------

Net loss                                              $  (588,033)   $  (833,064)   $(5,793,439)
                                                      ===========    ===========    ===========
Net loss per common share - basic and diluted         $      (.09)   $     (0.21)   $     (1.37)
                                                      -----------    -----------    -----------
Weighted average common shares outstanding -
   basic and diluted                                    6,407,407      3,944,002      4,204,281
                                                      ===========    ===========    ===========
</TABLE>

See accompanying notes to condensed consolidated financial statements.


<PAGE>




                   INTERNATIONAL ISOTOPES INC. AND SUBSIDIARY
                         (development stage enterprises)
                 Condensed Consolidated Statements of Cash Flows
                                   (unaudited)

<TABLE>
<CAPTION>
                                                                                                 Period from
                                                                                                 November 1,
                                                                                                    1995    
                                                                                                 (inception)
                                                                  Qtr. Ended      Qtr. Ended       through  
                                                                   March 31,       March 31,      March 31, 
                                                                     1998            1997           1998    
                                                                ------------    ------------    ------------
<S>                                                             <C>             <C>             <C>
Cash flows from operating activities:                            
   Net loss                                                     $   (588,033)   $   (833,064)   $ (5,793,439)
   Adjustments to reconcile net loss to net cash used
     in operating activities:
       Depreciation and amortization                                  10,622           1,821          29,636
       (Gain) donation on sale of assets                              20,332                        (331,006)
       Services compensated by stock issuance                             --          62,852       2,178,886
       Changes in operating assets and liabilities:
        Interest receivable                                           91,215              --         (61,143)
        Accounts receivable                                          (50,000)             --         (50,000)
        Other current assets                                          36,216        (183,491)        (61,725)
        Inventory                                                     (7,000)         58,019        (748,853)
        Accounts payable                                            (292,006)        (19,398)         41,325
        Accrued liabilities                                           (4,003)        610,961         598,061
                                                                ------------    ------------    ------------
             Net cash used in operating activities                  (782,657)       (302,300)     (4,198,258)

Cash flows from investing activities:
   Proceeds from sale of certificate of deposit                           --              --         400,000
   Purchase of certificate of deposit                                     --              --        (400,000)
   Purchase of assets for sale and operations                     (4,300,278)        (89,591)    (10,883,898)
   Purchase of securities available for sale                              --      (5,082,777)
   Proceeds from sale of securities available for sale             4,804,974              --       4,804,974
   Proceeds from sale of assets held for sale                             --              --         817,938
                                                                ------------    ------------    ------------
             Net cash provided (used) in investing activities        504,696         (89,591)    (10,343,763)

Cash flows from financing activities:
   Collections of stock sale receivable                                   --              --         160,000
   Proceeds from issuance of notes payable to chairman                    --         120,000
   Proceeds from sale of common stock                                     --         260,000      18,612,205
   Proceeds from issuance of debt                                    608,228         642,000      12,559,835
   Principal payments on notes payable                                (1,130)       (745,110)     (8,264,465)
   Payments on notes payable to chairman                                  --              --        (115,000)
                                                                ------------    ------------    ------------
             Net cash provided by financing activities               607,098         156,890      23,072,575
Net increase (decrease) in cash and cash equivalents                 329,137        (235,001)      8,530,554
Cash and cash equivalents at beginning of period                   8,201,417         331,397              --
                                                                ------------    ------------    ------------
Cash and cash equivalents at end of period                      $  8,530,554    $     96,396    $  8,530,554
</TABLE>



                                                                     (Continued)


<PAGE>




                   INTERNATIONAL ISOTOPES INC. AND SUBSIDIARY
                         (development stage enterprises)
                 Condensed Consolidated Statements of Cash Flows
                                  (unaudited)

<TABLE>
<CAPTION>
                                                                              Period from 
                                                                               November 1,    
                                                                                  1995       
                                                                              (inception)    
                                                     Qtr. Ended    Qtr. Ended   through      
                                                      March 31,     March 31,   March 31,     
                                                        1998         1997         1998        
                                                      -------       ------      ------- 
<S>                                                   <C>           <C>         <C>
Supplemental disclosure of cash flow activities:
   Cash paid for interest                             $79,499       57,515      612,935 
                                                      =======       ======      ======= 
   Cash paid for financing fees                       $ 1,600        5,045      511,861 
                                                      =======       ======      ======= 
Supplemental disclosure of noncash transactions:                                        
   Conversion of notes payable to common stock        $    --           --        5,000 
                                                      =======       ======      ======= 
   Acquisition of subsidiary through issuance of                                 75,003 
     common stock                                     $    --           --       75,003 
                                                      =======       ======      ======= 
   Acquisition of patent through issuance of common                                     
     Stock                                            $   --           --           100 
                                                      =======       ======      ======= 
</TABLE>


See accompanying notes to condensed consolidated financial statements.


<PAGE>



                   INTERNATIONAL ISOTOPES INC. AND SUBSIDIARY
                         (development stage enterprises)
              Notes to Condensed Consolidated Financial Statements
                                   (Unaudted)

(1)   The Company and Basis of Presentation

International Isotopes Inc. (the "Company" or "I(3)") was incorporated on
November 15, 1995 and is a development stage enterprise. The Company's primary
activities have been to obtain assets to be used in the production of
radioisotopes and to obtain funding to complete the reconfiguration and
reassembly of the linear accelerator.

The accompanying unaudited consolidated financial statements include the results
of operations of the Company and its wholly owned subsidiary, Gazelle Realty.
All significant intercompany accounts and transactions have been eliminated in
consolidation. The unaudited financial statements included herein by the Company
have been prepared without audit and in accordance with generally accepted
accounting principles, and have been prepared pursuant to the rules and
regulations of the Securities and Exchange Commission (SEC). These statements
reflect all adjustments which, in the opinion of management, are necessary for a
fair presentation of the Company's financial position as of March 31, 1998 and
December 31, 1997, and the results of its operations for the three months ended
March 31, 1998 and 1997 and its cash flows for the three months ended March 31,
1998 and 1997. This information should be read in conjunction with the Company's
audited consolidated financial statements as of and for the period from November
1, 1995 (inception) through December 31, 1997 as set out in the Company's
Form10-KSB filed March 31, 1998.

Certain information in footnote disclosures, normally included in the financial
statements were prepared in accordance with generally accepted accounting
principles, and have been condensed or omitted pursuant to the rules and
regulations. The financial data disclosed in the notes to the consolidated
statements are unaudited for these periods.

(2)   Net Loss Per Common Share - Basic and Diluted

In February 1997, the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards No. 128, Earnings per Share ("SFAS No. 128").
SFAS No. 128 revised the previous calculation methods and presentations of
earnings per share under APB 15 and requires that all prior-period earnings
(loss) per share data be restated. The Company adopted SFAS No. 128 in the
fourth quarter of 1997 as required by this Statement. In accordance with SFAS
No. 128, the Company has presented basic loss per share, computed on the basis
of the weighted average number of common shares outstanding during the period.
Diluted loss per share, which is computed on the basis of the weighted average
number of common shares and all potentially dilutive common shares outstanding
during the period, is the same as basic loss per share, as all were
anti-dilutive securities.

Pursuant to the SEC staff accounting bulletin and SEC Staff policy, common stock
issued during the twelve-month period prior to the Offering for consideration
below the Offering price have been included in the calculation of weighted
average number of shares as if they were outstanding for all periods presented.


<PAGE>



(3) Mortgage and Notes Payable to Banks

As of March 31, 1998, mortgage and notes payable to banks consisted of five
loans: (a) an interim construction loan on a building located at Spencer Road in
Denton, Texas the amount of $920,823 secured by building and land, with a
current rate of 8.5%, (b) a one year term loan in the amount of $500,000, (c) a
revolving line of credit having a maximum amount of $250,000 and a current
balance of $81,196, both secured by 20 acres of land in Denton, Texas, upon
which the Company is currently constructing the Radioisotope Production
Facility, with variable rates currently at 8.5%, (d) an amortizing loan for
$2,473,351 that is secured by the land and building at Jim Christal Road in
Denton, Texas with final payment due April 22, 2018 and a rate of 8.5%, and (e)
an amortizing fifteen year loan in the amount of $320,000 which is secured by
the Superconducting Super Collider ("SSC") project land and buildings in
Waxahachie, Texas with a variable rate at March 31, 1998 of 8.5%.

(4) Common Stock

On August 19, 1997, the Company completed an offering of 2,200,000 shares of its
Common Stock at $9.00 per shares. The Company received proceeds of $17,805,823
after deducting underwriters' discounts and commissions. Additional costs
associated with the offering due to legal, audit, printing and other expenses
were $898,117 resulting in net proceeds of $16,907,706. On September 30, 1997
the Company completed the sale of an additional 100,000 shares of its Common
Stock. In December 1997, the Company issued 155,000 shares of its Common Stock
to four key employees. There were no stock transactions during the three months
ended March 31, 1998. Common Stock shares outstanding at March 31, 1998 totaled
6,370,950.

(5) Stock Options

During the three month period ended March 31, 1998, the Company granted options
to purchase 30,800 shares of Common Stock to fifteen employees under the terms
specified in the Company's 1997 Long Term Incentive Plan. The plan authorizes
grants of options to purchase up to 600,000 shares to officers, employees and
consultants. Common Stock options outstanding at March 31, 1998 totaled 377,700.

(6) Building Purchase

On March 4, 1998 the Company purchased from the State of Texas 115 acres of land
and a 30,000 square foot building in Waxahachie, Texas, the former site of the
SSC, for $400,000. The Company financed the purchase through a $320,000, 15-year
prime rate note with Citizens National Bank of Waxahachie. The property will be
used as a secondary accelerator production and testing site.

(7) Development Income

During January 1998, the Company entered into a contract with Imagyn Medical
Technologies for development and manufacturing of radioisotope permanent implant
seeds for the treatment of cancer and other diseases, a process known as
brachytherapy. The contract includes a $1,000,000 development fee to be paid to
the Company and provides for an exclusive three year supply contract with
expected purchases by Imagyn per year anticipated to generate revenues for I(3)
of approximately $9,000,000 over the life of the contract.


<PAGE>




(8) Subsequent Events

On April 24, 1998, Company completed the acquisition of MAC Isotopes, Inc. from
its parent corporation, MACTEC, Inc., of Golden Colorado and then merged MAC
Isotopes into International Isotopes Idaho Inc, a newly formed subsidiary of the
Company. The Company exchanged 159,416 shares of its unregistered Common Stock,
valued at $3,173,973 for 100% of the stock in MAC Isotopes. Upon consummation of
the acquisition, the Company loaned $500,000 to MAC Isotopes, Inc. to pay
liabilities owed to MACTEC, Inc. International Isotopes Idaho Inc, incorporated
in Texas (formerly MAC Isotopes, Inc.), assumed MAC Isotopes' exclusive five
year long-term contract, with an option to renew for three additional years, for
the utilization of the Department of Energy Advanced Test Reactor facility
located near Idaho Falls, Idaho. This purchase will be accounted for under the
purchase method of accounting. Activities conducted at this location include the
production of high specific activity medical radioisotopes to be used in
diagnostics and therapy of cancer and various diseases.

On April 20, 1998, I(3) awarded a contract in the amount of $393,614, to Black
and Veatch, LLP of Kansas City, Kansas to perform validation services in
accordance with an approved Master Validation Plan for the Company's
radiopharmacy. Black & Veatch will be validating utility systems and process
equipment as well as the processes to be utilized in the manufacture of I(3)
products. The validation services will include the development documentation
necessary to produce products and secure the required FDA validation for the
Company's radiopharmaceutical facility.

ITEM 2.   MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
                      CONDITION AND RESULTS OF OPERATIONS

Except for historical information contained herein, the following contains
forward-looking information that is subject to certain risks and uncertainties.
The Company's actual results could differ materially from those anticipated in
these forward-looking statements as a result of certain factors, set forth in
the "Risk Factors" section included in the Company's Form 10-KSB filed with the
Securities Exchange Commission (SEC) on March 31, 1998. The following discussion
should be read in conjunction with "Management's Discussion and Analysis of
Financial Condition and Plan of Operations" included in the Form 10-KSB.

Overview

International Isotopes Inc., a Texas corporation, is a development stage company
that is executing plans to be the first commercial domestic producer of a full
range of radioisotopes, pharmaceutical grade radioisotopes and finished
radiopharmaceuticals (on a contract or joint venture basis) for commercial sale
to the nuclear medicine industry for the diagnosis and treatment of cancer and
other diseases. The Company is also developing instrumentation for radiation
therapy and medical imaging.


<PAGE>



Radioisotopes, indispensable components of nuclear medicine, are radiation
emitting atoms that are used for both medical diagnostics and in-the-body ("in
vivo") therapeutics. When a specifically selected radioisotope is attached or
"tagged" to one of a variety of pharmaceuticals, the resulting product is known
as a radiopharmaceutical. The pharmaceutical component acts as a carrier to seek
out targeted internal organs, tumor sites and/or cells for which it has a
predetermined natural affinity. In diagnostics, the radioisotope component
provides a signal as to the location of the attached pharmaceutical as it
targets the specific organ or site. This process, in turn, is captured by
external imaging equipment such as positron emission tomography ("PET") and
single photon emission computed tomography ("SPECT") cameras. In therapeutics,
the radioisotope component provides in vivo treatment of the targeted organ,
cancerous tumor and/or cancerous cell site through the emission of either
photons or beta radiation. In addition to radiopharmaceutical applications,
radioisotopes may also be injected into the body at the site of a tumor as part
of a medical device. This process is known as brachytherapy. Radioisotopes are
produced commercially either by an accelerator (a cyclotron or a linear
accelerator) or a nuclear reactor. Accelerators are machines, which accelerate
charged particles, generally protons, to bombard a stable (non-radioactive)
isotope target, causing a reaction such that the target is transformed into a
radioactive isotope. A nuclear reactor produces radioisotopes by bombarding a
stable isotope target with neutrons.

Presently, the most commonly used radioisotopes in the United States, such as
molybdenum-99 ("Mo-99"), thallium-201, gallium-67, indium-111 and palladium-103,
which the Company intends to commercially produce, are produced by four domestic
radiopharmaceutical companies, primarily for their own use, and by two foreign
manufacturers, and are used either independently or in various combinations or
"cocktails" to assist in the diagnosis of a myriad of medical conditions,
including coronary heart disease, pulmonary embolism, thyroid carcinoma, bone
cancer, brain disorders, acute cholecystitis (inflammation of the gall bladder),
gastrointestinal bleeding, renal artery stenosis and other diseases.

Since its incorporation in November 1995, the Company's operations have been
concentrated in acquiring its proton linear accelerator ("LINAC") and related
assets, redesigning and reconfiguring the LINAC for production of radioisotopes,
acquiring land, designing and constructing facilities for the production and
distribution of radioisotopes, radiopharmaceuticals and brachytherapy products,
raising capital, selling certain accelerator components and excess equipment and
entering into strategic alliances with medical and pharmaceutical companies,
universities and other institutions.

In November 1997, the Company acquired two buildings and twelve acres of land in
Denton, Texas, and relocated all personnel and equipment to this location in
December 1997. Also in December 1997, the Company installed a CP-42 Cyclotron
donated by M.D. Anderson Hospital to the University of North Texas at this site.
This machine, which will be operated by the Company under a lease agreement with
the university, is being rebuilt for use in the production of short-lived
isotopes. On February 5, 1998 the Company entered into a contract with MSS Clean
Technology in the amount of $2,014,793 for the construction of pharmaceutical
processing modular rooms to be located in this facility.

The Company is currently constructing a 35,000 square foot Radioisotope
Production Facility which will house the LINAC and radiochemistry processing.
The Radioisotope Production Facility is being constructed on 20.16 acres of land
the Company has acquired in a 500-acre high technology biomedical research
industrial park located in Denton, Texas, known as the "North Texas Research
Center." Due to a shortage of concrete, weather delays and delays in receipt of
final construction drawings, initial occupancy of the tunnel is anticipated in
July, and occupancy of the radiochemistry portion of the building is expected in
to occur in September with production thirty to forty-five days thereafter.


<PAGE>



Upon full operation of the Radioisotope Production Facility and the LINAC in
conformity with the Company's redesign and reconfiguration, the Company intends
to produce currently used radioisotopes and the upcoming and potentially
superior diagnostic and therapeutic pharmaceutical grade radioisotopes which can
be cost effectively be accelerator-produced with the high energy (70 MeV) and
the 1.0mA beam intensity of the LINAC.

The Company has received additional authorizations from the Texas Department of
Health to perform certain preliminary functions. These include authorization to
transfer the permit for an authorized use location to 3100 Jim Christal Road;
authorization to handle and clean certain cyclotron components that contain low
levels of radioactive contamination; authorization to possess and use small
radioactive sealed sources used to calibrate radiation detection
instrumentation; and authorization to produce an internal beam in the cyclotron
for initial acceptance testing.

The Company has also submitted a license application to the Texas Department of
Health to obtain authorization to possess, manufacture and distribute
radiochemical and radiopharmaceuticals and has had satisfactory preliminary
discussions with the regional and national offices of the FDA concerning the
construction and validation of its radiopharmaceutical manufacturing facility.

The Company has entered into a development and manufacturing contract with
Imagyn Medical Technologies Inc. to provide I-125 and Pd-103 brachytherapy
seeds. The Company has also signed a Letter of Agreement for an exclusive U. S.
license under certain patents to manufacture, market and distribute I-125
sputter coated seeds. Permanent implant brachytherapy is a relatively new
technique currently used for the treatment of prostate cancer.

The Company also intends, under an exclusive worldwide license, to complete
development of and to manufacture and market for use in diagnostic nuclear
medicine a high resolution medical imaging camera, key components of which are
patented. Based on spatial resolutions achieved in industrial applications of
the licensed patented inventions, the Company believes its medical imaging
camera will have resolution at least four times greater than any medical imaging
camera currently on the market.

RESULTS OF OPERATIONS

Three Months ended March 31, 1998 and 1997

The Company's net loss for the quarter ending March 31, 1998 was $588,033 as
compared to $833,064 for the quarter ended March 31, 1997. Net loss per basic
common share totaled $.09 for the first quarter of 1998 as compared with $.21
for the comparable period in 1997. The decrease in the loss was partially due to
the receipt of development income related to the Company's contract with Imagyn
for brachytherapy seeds and partially to the capitalization of internal labor
costs as the Company concentrates its efforts on the construction of the isotope
production accelerators as well as radiochemistry and radiopharmaceutical
facilities.


<PAGE>



Revenues for the quarter ended March 31, 1998 were $150,000 as compared to
$128,072 for the comparable period in 1997. Gross profits for the quarter ending
March 31, 1998 were $87,170 as compared to $62,416 for the same period in 1997.
The increase in revenues was attributable to the development contract between
the Company and its marketing partner related to the development of
brachytherapy devices for the treatment of cancer. The contract, executed in
January 1998, calls for an additional $850,000 to be paid during the remainder
of 1998.

Operating expenses remained relatively constant at $814,077 for the three months
ended March 31, 1998 compared to $812,587 in the comparable period in 1997.
General and administrative, and sales and marketing expenses totaled $480,136
for the first quarter of 1998 as compared to $63,422 in the first quarter of
1997, an increase of $416,714. The increases in costs are attributable to the
increases in staffing for production, marketing, quality assistance, safety and
administrative personnel as the Company expands its organizational structure
prior to beginning operations. The majority of key management personnel were in
place prior to the beginning of the first quarter of 1998, therefore the Company
incurred $0 expense related to employee incentives as compared to $556,875 in
the first quarter of 1997, during which time the Company was granting incentives
to attract key officers.

Interest income earned during the first quarter of 1998 was $159,206 as compared
to $423 for the comparable period in 1997. This increase was attributable to the
investment of funds received from the Initial Public Offering completed in
August 1997. The Company capitalized all interest costs incurred on debt for the
first quarter of 1998 as compared to $83,316 recognized as interest expense for
the first quarter of 1997.

Liquidity and Capital Resources

From November 1, 1995 (inception) through May 1997, the Company obtained funds
primarily through principal shareholder guaranteed bank loans, sales of
accelerator components and excess equipment, sales of Common Stock in a private
placement to investors and from loans from stockholders and directors. During
the third quarter of 1997, the Company completed an underwritten public offering
of 2,200,000 shares of common stock , generating $16,907,706 in net proceeds to
the Company after commissions and legal, audit, printing and other expenses.
Approximately $3,200,000 of funds from the public offering were utilized to
extinguish all Company debt outstanding at the time of the offering, with the
exception of the construction loan for the Company's administration,
manufacturing, research and development facility. Additional funds of $801,133,
net of underwriters' discount, were received by the Company in September 1997.
Disbursements of approximately $4,425,089 were expended for the purposes of
engineering, design and the purchase and installation of machinery, equipment
and capital assets. Funds in the amount of $1,194,044 were utilized for working
capital purposes, including personnel, facilities, insurance and other operating
expenses. These transactions resulted in remaining cash, cash equivalents and
short-term securities of approximately $8,800,000 at the end of the first
quarter. The majority of the funds are invested in short-term instruments with
maturity dates of six months or less.

The Company has experienced several changes to its financial ratios during the
past year. Current assets to current liability ratios at March 31, 1998 were 5.5
to 1 as compared to the current asset to current liability ratio of 1.2 to 1 for
the corresponding period ending March 31, 1997. The total asset to total
liability ratios for the corresponding periods were 3.7 to 1 and 1 to 1.06,
respectively. Shareholder equity increased to $15,337,607 from a deficit of
$200,303.

Management is currently negotiating potential financing from financial
institutions and commercial lenders for the construction of facilities currently
underway and increased installation and construction of facilities for the
production of finished radiopharmaceuticals to respond to additional demands
from potential customers. Management anticipates, based on its currently
proposed plans and assumptions relating to its operations, that the current cash
resources, proposed financing, income from operations, sale of assets held for
sale and sale of inventory will be sufficient to sustain operations for at least
the next 12 months.

<PAGE>

PART II.   OTHER INFORMATION

Item 5. Other Information

During January 1998, the Company entered into a contract with Imagyn Medical
Technologies for development and manufacturing of radioisotope permanent implant
seeds for the treatment of cancer and other diseases, a process known as
brachytherapy. The contract includes a $1,000,000 development fee to be paid to
the Company and provides for an exclusive exclusive three year supply contract
with expected purchases by Imagyn anticipated to generate revenues for I(3) of
approximately $9,000,000 over the life of the contract. The $1,000,000
development fee will be recognized as the Company successfully completes a
series of milestones. The initial payment of $150,000 received during the first
quarter of 1998, was awarded to I3 after inspection and approval by Imagyn,

On March 4, 1998 the Company purchased from the State of Texas 115 acres of land
and a 30,000 square foot building in Waxahachie, Texas, the former site of the
SSC, for $400,000. The Company financed the purchase through a $320,000, 15-year
prime rate note with Citizens National Bank of Waxahachie. The property will be
used as a secondary accelerator production and testing site.

The first meeting of the Company's Science and Technology Advisory Board was
held at the Company's headquarters in Denton, Texas on March 23, 1998. The
Science and Technology Advisory Board's charter calls for it to perform a
critical and constructive review of the Company's progress, goals, objectives
and performance and to advise the Company on long-range strategy and emerging
potential new products. Members of the Board include the following: Dr. Norman
Hackerman, Chairman, President Emeritus, Rice University, Houston, Texas; Dr.
Frederick Bonte, M.D., Associate Chairman, Director of Nuclear Medicine
Technology, University of Texas Southwestern Medical Center, Dallas, TX; Dr.
Edward Knapp, Ph.D., Associate Chairman of Accelerator Technology, formerly of
Los Alamos National Laboratory and Santa Fe Institute, Santa Fe, NM; Dr. Richard
Reba, M.D., University of Chicago, Chicago, IL; Dr. Paul Murphy, Ph.D.,Baylor
College of Medicine, Houston, TX; Dr. Michael Devous, Ph.D., University of Texas
Southwestern Medical Center, Dallas, TX; Dr. Henry Kramer, Ph.D., industry
consultant, Moraga, CA; Dr. Tom Tombrello, Ph.D., California Institute of
Technology, Pasadena, CA; Dr. Earnest Gloyna, Ph.D., University of Texas at
Austin; Dr. Jerry Watson, Ph.D., International Isotopes Inc., Denton, TX; Mr.
Rudy Damm, Argonne National Laboratory; Dr. Robert Jameson, Ph.D., Los Alamos
National Laboratory; and Dr. Frank Masse, Ph.D., MIT, Cambridge, MA.

On April 24, 1998, Company completed the acquisition of MAC Isotopes, Inc. from
its parent corporation, MACTEC, Inc., of Golden Colorado and then merged MAC
Isotopes into International Isotopes Idaho Inc, a newly formed subsidiary of the
Company. The Company exchanged 159,416 shares of its unregistered Common Stock,
valued at $3,173,973 for 100% of the stock in MAC Isotopes. Upon consummation of
the acquisition, the Company also loaned $500,000 to MAC Isotopes, Inc. to
pay liabilities owed to MACTEC, Inc. International Isotopes Idaho Inc,
incorporated in Texas (formerly MAC Isotopes, Inc.), assumed MAC Isotopes'
exclusive five year long-term contract, with an option to renew for three
additional years, for the utilization of the Department of Energy Advanced Test
Reactor facility located near Idaho Falls, Idaho. Activities conducted at this
location include the production of high specific activity medical radioisotopes
to be used in diagnostics and therapy of cancer and various diseases.


<PAGE>





Item 6.  Exhibits and Reports on Form 8 - K

Exhibits:

2.1         Agreement and Plan of Merger dated April 24, 1998 by and among The
            Company, I(3) Acquisition Sub. Inc., MACTEC, Inc. and MAC Isotopes,
            Inc. (incorporated by reference to Exhibit 2.1 of the Company's
            Form 8-K filed May 8, 1998).

3.1         Restated Articles of Incorporation of the Company (incorporated by
            reference to Exhibit 3.1 to the Company's Registration Statement
            on Form SB-2 (Registration No. 333-29629)).

3.2         Bylaws of the Company (incorporated by reference to Exhibit 3.2 to
            the Company's Registration Statement on Form SB-2 (Registration 
            No. 333-26269)).

4.1         Contract dated February 5,1998 between the Company and MSS Clean
            Technology in the amount of $2,014,793 for the construction of
            pharmaceutical processing modular rooms.

27.1        Financial Data Schedule

Reports on Form 8-K:

The Company filed a Form 8-K on May 8, 1998 with respect to the acquisition of
MAC Isotopes, Inc.




                        I(3) International Isotopes Inc.

Section A              Contract Form and Signature Page



- --------------------------------------------------------------------------------
                                              Contract Number:     PM-801
                                              Mod Number:          Orig
                                              Date:                2/06/98
- --------------------------------------------------------------------------------

To:     MSS Clean Technology, Inc.            From:  International Isotopes Inc.
        3100 Smoketree Court, Suite 610       3100 Jim Christal Road
        Raleigh, NC  27604                    Denton, TX  76207

This definitive contract is made and entered into by and between International
Isotopes Inc., address above, a Texas corporation, (hereinafter referred to as
I(3), or "Buyer" and MSS Clean Technology Inc., a Delaware corporation, address
above, hereinafter referred to as MSS, or "Seller".

Whereas, International Isotopes Inc. is in the business of supplying equipment,
services, pharmaceuticals, and components to the drug industry. International
Isotopes Inc. desires to obtain the services of Seller related to fabrication
and installation of clean room facilities, and Seller is willing to provide such
services. Accordingly, the parties have agreed as follows:

The Seller has represented to the Buyer that it has the capability and capacity
without any additional Buyer furnished facilities to perform all of the work
hereunder in accordance with the terms of the order, except as noted herein.

Buyer and Seller have negotiated and mutually agreed upon the Contract
requirements and deliveries, established a price arrangement, and other terms
and conditions as contained herein.

The Seller acceptance of this subcontract will be indicated by affixing its
authorized signature to two (2) originals of this Contract and returning one
executed original to I(3) no later than: February 6th, 1998.


ARTICLE A-1: INCLUSIVE SECTIONS


                                       A-1

<PAGE>



Section A                       Contract Form and Content


ARTICLE A-1: INCLUSIVE SECTIONS
Documents comprising this Contract are as follows:

<TABLE>
<CAPTION>
Document                  Title
- --------                  -----
<S>                       <C>
Section A                 Contract Form and Content
Section B                 Schedule of Supplies, Services, and Pricing
Section C                 Statement of Work and Quality Assurance Requirements
Section D                 Packaging, Marking, and Transportation
Section E                 Qualification and Acceptance Provisions
Section F                 Delivery and Performance Schedules
Section G                 Administrative Data
Section H                 Special Contract Requirements and Provisions
Section I                 General Contract Requirements and Provisions
Section J                 List of Documents, Exhibits, and other Attachments
Section K                 Representations and Certifications
</TABLE>


ARTICLE A-2:  TERMS AND CONDITIONS
The Buyer and Seller have mutually agreed upon the Contract requirements and
established a firm fixed price for items and services listed in Section B. The
terms and conditions shall be as listed in the specific sections listed above.

ARTICLE A-3:  PERIOD OF PERFORMANCE
The Period of Performance (POP) of this Contract shall be from December 5th,
1997 through May 31st, 1998. The period of performance specifically includes
the design phase which was initiated by Buyer's letter of intent dated December
5th, 1997 and authorized by Buyer's letter dated December 9th, 1997.






                                       A-2
<PAGE>



Section B              Schedule of Supplies, Services, and Pricing


ARTICLE B-1:  DELIVERABLES

The following deliverable contract line items are herein established for this
Contract:

<TABLE>
Line    Description                                Qty    Unit Price    Extended
Item                                                                    Price
<S>     <C>                                        <C>    <C>           <C>
1       Design Package Development                        $100,000      $100,000
2       Envelope System
3       HVAC System
4       Electrical System
5       Plumbing and Piping System
6       Steelwork System
7       Miscellaneous Items
8       Specialty Services
        NOTE:  Line Items 2 through 8 are
        Not Separately Priced

                                                          Total         $1,995,789

        Add-on tasks per quote dated January 28th                       $19,003
        


        Revised Total Fixed Price                                       $2,014,792
</TABLE>



The above table lists the general category of facilities and services to be
provided under this contract. The detailed items and services to be supplied are
listed in the MSS proposal 10694/Q5737, dated January 6th, 1998, incorporated
herein by reference. The items and services are further described in work
statements, specifications, and drawings which are incorporated into this
contract by reference in Section C and Section J.

ARTICLE B-2:  COST/PRICE
        B.2.1  FIRM FIXED PRICE

        The Firm Fixed Price for all facilities, goods, and services to be
supplied under this contract is $2,014,792. All prices are in U.S. dollars. This
total price includes all efforts authorized and performed under pre-contract
letter authorizations issued by Buyer on December 5th, and December 9th, 1997,
and on January 13th, 1998.

        B.2.2 FIXED PRICE OPTIONS--not applicable to this Contract. 
        B.2.3 UNPRICED OPTIONS--not applicable to this Contract.


                                      B-3

<PAGE>

Section B  Schedule of Supplies, Services, and Pricing

ARTICLE B-3:  PROGRESS AND MILESTONE PAYMENTS

Progress and/or Milestone payments will be made net 30 days from receipt of
properly executed invoice at the address specified below.

               International Isotopes Inc.
               3100 Jim Christal Road
               Denton, TX  76201

               Attn:  Accounts Payable, Ms J. Gillett

        B.3.1 PROGRESS PAYMENTS--not applicable to this contract.

        B.3.2 MILESTONE PAYMENTS

The following billing milestones are applicable to this contract:

<TABLE>
<CAPTION>
- ------------------------------ --------------------- ------------- ----------------------
Event                             Projected Date        Event         Amount
- ------------------------------ --------------------- ------------- ----------------------
<S>                            <C>                   <C>           <C>
Initial Authorization                12/9/97                                     $50,000
- ------------------------------ --------------------- ------------- ----------------------
Award and Design Approval            1/30/98                                     $50,000
- ------------------------------ --------------------- ------------- ----------------------
MSS On-Site                           2/9/98                                    $425,000
- ------------------------------ --------------------- ------------- ----------------------
MSS On-Site 4 wks                     3/9/98            Note 1                  $425,000
- ------------------------------ --------------------- ------------- ----------------------
MSS On-Site 8 wks                     4/6/98            Note 1                  $425,000
- ------------------------------ --------------------- ------------- ----------------------
Satisfactory Completion              4/27/98                                    $519,003
- ------------------------------ --------------------- ------------- ----------------------
Final Certifications                  6/1/98                                    $120,789
- ------------------------------ --------------------- ------------- ----------------------
- ------------------------------ --------------------- ------------- ----------------------
                                                        Total                 $2,014,792
- ------------------------------ --------------------- ------------- ----------------------
</TABLE>

Payment of the above billing milestones are based on satisfactory progress
toward completion of the clean room facilities. If, in the sole opinion of
Buyer, satisfactory progress is not being made, formal notice will be given to
Seller as to the amount of payment being withheld, and the expected corrective
action(s) necessary to cure the deficiency and obtain release of withheld
payment.

Note 1: Payment event for these payments will be derived from the detailed
construction schedule available not later than February 15th, 1998. Buyer and
Seller shall mutually agree on schedule event(s) which comprise basis for
payment.


                                      B-4
<PAGE>



Section C         Statement of Work and Quality Assurance Requirements



                             Statement of Work (SOW)

MSS is to perform all design, fabrication, installation and testing of the clean
room complex as described in the proposal dated January 6th, 1998, and all
related specifications and drawings. The clean room complex includes:

        Envelop system
               Clean Room Classified Areas
               Non-Classified Areas

        HVAC System

        Electrical System

        Plumbing and Piping System

        Steelwork System

        Miscellaneous and Specialty Equipment and Tasks, including:
               HVAC and Power Test & Balance
               Cleanroom Certification
               Engineering design and drawing development
               On-site Installation and Supervision
               Project Management

The work shall be performed in accordance with Attachment A to this contract,
the MSS Scope of Work & Technical Specification For Cleanroom and Ancillary Area
Construction fax dated January 14th, 1998. All materials shall conform to the
specifications contained in that design package.




                                       C-5
<PAGE>

Section D                Packaging, Marking, and Transportation

MSS is responsible for the safe packaging, transportation, and delivery of the
clean room components from MSS facilities to I(3) Denton, Texas facilities at
3100 Jim Christal Road.





                                       D-6
<PAGE>

Section E                Qualification and Acceptance Provisions

Acceptance shall be at I(3) Denton, Texas facilities. Acceptance inspection and
testing shall be performed in accordance with the I(3) approved test plan and
inspection procedures.

Clean Room Certification (MSS document 15191, revised by I(3) and applied as
attachment B to this Contract) will be used as basis for the detailed acceptance
test plan.




                                       E-7
<PAGE>


Section F                  Delivery and Performance Schedules

The following scheduled milestones must be met in the performance of this
contract:

<TABLE>
<CAPTION>
- ------------------------------ --------------------- ------------- ----------------------
Event                          Projected Date                      Item Completion
- ------------------------------ --------------------- ------------- ----------------------
<S>                            <C>                                 <C>
Award and Design Approval            1/30/98                          Contract Signature
- ------------------------------ --------------------- ------------- ----------------------
MSS On-Site                           2/9/98                         Team/Subs in Denton
- ------------------------------ --------------------- ------------- ----------------------
MSS On-Site 4 wks                     3/9/98                                   See B 3.2
- ------------------------------ --------------------- ------------- ----------------------
MSS On-Site 8 wks                     4/6/98                                   See B 3.2
- ------------------------------ --------------------- ------------- ----------------------
Satisfactory Completion              4/27/98                        Successful Walk thru
- ------------------------------ --------------------- ------------- ----------------------
Final Certifications                  6/1/98                          All Certifications
- ------------------------------ --------------------- ------------- ----------------------
</TABLE>



                                             F-8
<PAGE>

Section G                    Administrative Data

ARTICLE G-1:  NOTICES

Formal notices under this Contract given by either party to the other shall be
in writing and transmitted via fax, followed by signed copy sent by U.S. Postal
Service, Certified Mail, Return Receipt Requested (or equivalent premium package
service) addressed as follows:

<TABLE>
<CAPTION>
SELLER                              INTERNATIONAL ISOTOPES INC.
<S>                                 <C>
MSS Clean Technology                International Isotopes Inc.
3100 Smoketree Court, Suite 910     3100 Jim Christal Road
Raleigh, NC  27604                  Denton, TX  76207

Attn:  James Kavanaugh              Attn:  Glenn Vickery

ARTICLE 2:  POINTS OF CONTACT

The following points of contact are designated for this contract:

        Technical Issues:

SELLER                              INTERNATIONAL ISOTOPES INC.

Bill Lynch                          Bob Wetsel
MSS Clean Technology                International Isotopes Inc.
3100 Smoketree Court, Suite 910     3100 Jim Christal Road
Raleigh, NC  27604                  Denton, TX  76207
Phone:  919-876-8577                Phone:  940-484-9492
Fax:  919-876-9633                  Fax:  940-484-0877

        Contract Issues:

SELLER                              INTERNATIONAL ISOTOPES INC.

James Kavanaugh                     Glenn Vickery
MSS Clean Technology                International Isotopes Inc.
3100 Smoketree Court, Suite 910     3100 Jim Christal Road
Raleigh, NC  27604                  Denton, TX  76207
Phone:  919-876-8577                Phone:  940-484-9492
Fax:  919-876-9633                  Fax:  940-484-0877
</TABLE>




                                      G-9
<PAGE>


Section H                    Special Contract Requirements and Provisions

ARTICLE H-1:  ORDER OF PRECEDENCE

In the event of any inconsistency or conflict between or among the sections of
this contract, the following order of precedence shall be used to resolve the
conflict:

(1) This contract, specifically Articles A and B 
(2) The Specifications and Drawings, as defined in Section J. 
(3) The Statement of Work, as defined in Section C.

ARTICLE H-2:  CHANGES AND WRITTEN AUTHORIZATION

Changes, extensions, or other modifications to this Contract may be made at any
time during the period of performance hereof. Changes affecting scope of work,
delivery schedule, or price shall require written consent of the parties hereto.
Changes to this Contract will be executed only by individual(s) authorized by
I(3) to make such changes. Changes will take the form of a fully executed
modification to this Contract. All risk of executing any changes not authorized
in writing by I(3) rests with the Seller.

ARTICLE H-3:  BUYER FURNISHED FACILITIES, EQUIPMENT, AND DATA
The following items of facilities, equipment, material, and data shall be
supplied by I(3) to the Seller for use in the performance of work under this
subcontract:

Buyer will provide Seller with access to facilities at 3100 Jim Christal Road,
Denton, TX for the purpose of erecting Clean Room and supporting facility
improvements. Facility support will be provided by I(3) as listed in
EXCLUSIONS/CLARIFICATIONS section of the MSS proposal dated January 6th, 1998,
except for items 1, 2, 4, and 5, which were incorporated into this contract from
Seller's quote dated January 28th, 1998.

If items are supplied by I(3) but not consumed in the performance of work under
this Contract, they shall be returned at the end of performance in usable
condition, normal wear and tear excepted, freight prepaid. Data supplied by I(3)
shall be packaged for protection and returned to I(3) via First Class Mail at
the completion of performance.

ARTICLE H-4:  WARRANTY

MSS shall provide a One-year parts, materials, and installation warranty on all
clean room elements and components provided by or installed under the
supervision of MSS. Warranty items supplied by MSS which do not pass FDA
validation must be corrected within 15 days of notice from I(3).


                                      H-10


<PAGE>

Section H                           Special Contract Requirements and Provisions

ARTICLE H-5:  PROPRIETARY DATA

In the event either buyer or seller is required or finds it necessary to provide
company private or proprietary data to the other party during the performance of
this Contract, Buyer and Seller agree to afford such data with the protection
necessary to preclude its inadvertent disclosure to unauthorized parties. Such
data must be destroyed or returned to originator upon request. Should
destruction be requested, the party in possession of the data shall certify its
destruction by letter to the party who originated the data.

ARTICLE H-6:  DISPUTES

In the event of a dispute arising between the parties during the performance of
this Contract, such dispute shall be resolved through arbitration as defined:

        Arbitration

        (a) As concluded by the parties to this Contract on the advise of their
counsel, and as evidenced by the signatures of the parties hereto, it is agreed
that all questions as to rights and obligations arising over the terms of this
Contract are subject to arbitration except disputes in which less than $50,000
is in controversy, and such arbitration shall be governed by the provisions of
the Texas General Arbitration Act.

        (b) If a dispute should arise under this Contract, either party may
within 30 days after the date on which such dispute arises make a demand for
arbitration by filing a demand in writing with the other. The parties to this
Contract may agree on one arbitrator, but in the event that they cannot do so
there shall be three arbitrators, one named in writing by each of the parties
within 60 days after demand for arbitration is made, and a third to be chosen by
the two so named. Should either party fail to timely join in the appointment of
the arbitrators, the arbitrators shall be appointed in accordance with the
provisions of Texas Civil Practice and Remedies Code, Section 171.003.

        (c) All arbitration hearings conducted under the terms of this Contract,
and all judicial proceedings to enforce any of the provisions of this Contract,
shall take place in Denton County, Texas.

        (d) If there is only one arbitrator, his or her decision shall be
binding and conclusive on the parties. If there are three arbitrators, the
decision of any two shall be binding and conclusive. The submission of a dispute
to the arbitrators and the rendering of their decision shall be a conditions
precedent to any right of legal action on the dispute.

        (e) The cost and expenses for arbitrators, including the fees of the
arbitrators, shall be borne by the losing party or in such proportions as the
arbitrators shall determine.


                                      H-11

<PAGE>

Section H                           Special Contract Requirements and Provisions

ARTICLE H-7:  TERMINATION
This contract may be terminated, under any of the following circumstances, by
Buyer by giving 30 days formal notice to Seller.

        a. Termination for Default; For any material breach by Seller; the
        Default provisions in H-8 below shall apply.

        b. Termination for Convenience of Buyer; Buyer to pay actual and
        reasonable costs through date of termination; fee settlement will be
        negotiated between Buyer and Seller.

        c. Completion of the Contract; a properly executed Release of Claims may
        be required by Buyer.
        termination.

ARTICLE H-8:  DEFAULT BY SELLER AND REMEDIES

The following shall constitute events of default by Seller pursuant to this
Contract:

a. Seller fails to comply with any covenant, condition, requirement or
obligation required of Seller hereunder and such failure is not cured within 5
days after written notice of such failure is provided to Seller by Buyer;

b. Seller makes an assignment of Seller's business for the benefit of creditors;

c. A petition of bankruptcy is filed by or against Seller;

d. A receiver, trustee in bankruptcy, or similar officer is appointed to take
control of all or part of Seller's property; or

e. Seller is adjudicated a bankrupt.

In the event of such default International Isotopes may terminate this agreement
and sue for damages or pursue any other remedy available to it at law or in
equity.

ARTICLE H-9:  LIQUIDATED DAMAGES--not used.


                                      H-12
<PAGE>


Section I                           General Contract Requirements and Provisions

ARTICLE I-1:  GOVERNING LAW AND FORM
This Contract shall in all respects be interpreted, construed, and governed by
and in accordance with the laws of the State of Texas, disregarding any conflict
of law provisions which may require the application of the law of another
jurisdiction. Any action to enforce, or which arises out of or in any way
relates to, any of the provisions of this Contract shall be brought and
prosecuted in such court or courts located within the State of Texas as provided
by law; and the parties consent to the jurisdiction of said court or courts
located within the State of Texas, and to service or process by registered mail,
return receipt requested, or by any other manner provided by the law of the
State of Texas.

ARTICLE I-2:  CONFIDENTIALITY AGREEMENT
Sellers performing work for I(3) are required to sign the company's
Confidentiality Agreement, which is attached hereto and incorporated into this
Contract by this reference.

ARTICLE I-3: PUBLICITY Neither party to this Contract may use the name of the
other in news releases, publicity, advertising, or product/service promotions
without the prior written consent of the other. I(3) reserves the right to
review and approve the content of any publicity materials prepared for release
by the Seller wherein that material refers to I(3) or the work covered by this
Contract.

ARTICLE I-4:  COUNTERPARTS
This Contact may be executed simultaneously in two or more counterparts, each of
which shall be deemed an original, but all of which together shall constitute
and be the same instrument. All schedules, exhibits and documents referred to
Article A-1 hereof, are incorporated herein and expressly made a part of this
Contract as though completely set forth herein. All references to this Contract
herein or in any of the schedules, exhibits or documents referred to in Article
A-1 and attached hereto shall be deemed to refer to this entire Contract,
including all schedules, exhibits and attachments.

ARTICLE I-5:  INDEMNIFICATION
Seller shall defend, indemnify and hold harmless Buyer and its directors,
shareholders, officers, employees, agents, consultants, representatives,
affiliates, successors and assigns from and against any and all claims,
liabilities, obligations, losses, costs, expenses (including without limitation,
reasonable legal expenses), litigation, proceedings, fines, taxes, levies,
duties, deficiencies, assessments, charges, penalties, allegations, demands,
damages (including by not limited to actual, punitive or consequential, foreseen
or unforeseen, known or unknown, fixed or contingent, and matured or unmatured),
civil and criminal violations of law, settlements and judgments of any kind or
nature whatsoever, which may incur or arise out of the performance of Seller's
duties and obligations hereunder.

                                      I-13
<PAGE>

Section I                           General Contract Requirements and Provisions

ARTICLE I-6:  ASSIGNABILITY
This Contract shall not be assignable by either party without the express
written consent of the other except for assignments to subsidiaries or
affiliates of the parties hereto, provided that such assignment or assignments
shall not relieve the assigning party of any obligation or liability under this
Contract.

ARTICLE I-7:  HEADINGS
The headings and subheadings hereof are inserted for the convenience of
reference only and shall not affect the interpretation of this Contract.

ARTICLE I-8:  BINDING EFFECT
This Contract shall be binding upon, inure to the benefit of, and be enforceable
by the successors and permitted assigns to the parties hereto.

ARTICLE I-9:  WAIVERS
Any waiver of rights hereunder must be set forth in writing. A waiver of any
breach or failure to enforce any of the terms or conditions of this Contract
shall not in any way affect, limit or waive either party's rights at any time to
enforce strict compliance thereafter with every term or condition of this
Agreement.

ARTICLE I-10:  SEVERABILITY
If and to the extent that any court of competent jurisdiction holds any
provisions, or any part thereof, of this Contract to be invalid or enforceable,
such holdings shall in no way affect the validity of the remainder of this
Contract.

ARTICLE I-11:  ENTIRE AGREEMENT
This Contract constitutes the entire agreement of the parties with respect to
the subject matter hereto and supersedes all previous agreements, understandings
or discussions with respect to the subject matter hereof.

                                      I-14
<PAGE>


Section J                     List of Documents, Exhibits, and other Attachments

The following table of drawings (issue in effect at time of award unless changed
below) shall define the facility to be designed, built, installed, and delivered
under this contract:

For plumbing and electrical requirements, the provisions of the Conceptual
Design Summary shall apply until the formal drawings are received and approved
by Buyer.

<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------
Sheet             Title                              Date           Rev
- ----------------- ---------------------------------- -------------- --------------
<S>               <C>                                <C>            <C>
M-1               Symbols & Abbreviations            1/14/98
- ----------------- ---------------------------------- -------------- --------------
M-2               Flow Schematic                     1/14/98
- ----------------- ---------------------------------- -------------- --------------
M-3               Flow Schematic                     1/14/98
- ----------------- ---------------------------------- -------------- --------------
M-4               Equipment Schedules                1/14/98
- ----------------- ---------------------------------- -------------- --------------
M-5               Make Up Air Duct Plan              1/14/98
- ----------------- ---------------------------------- -------------- --------------
M-6               Recirc Ductwork Plan               1/14/98
- ----------------- ---------------------------------- -------------- --------------
M-7               Exhaust Ductwork Plan              1/14/98
- ----------------- ---------------------------------- -------------- --------------
M-8               HVAC Piping Plan                   1/14/98
- ----------------- ---------------------------------- -------------- --------------
M-9               Mechanical Sections                To Be
                                                     Produced
- ----------------- ---------------------------------- -------------- --------------
M-10              Mechanical Sections                To Be
                                                     Produced
- ----------------- ---------------------------------- -------------- --------------
M-11              Mechanical Details                 1/14/98
- ----------------- ---------------------------------- -------------- --------------
M-12              Mechanical Details                 1/14/98
- ----------------- ---------------------------------- -------------- --------------

P-1               Process Piping Plan                TBP
- ----------------- ---------------------------------- -------------- --------------
P-2               Drain Systems Plan                 TPB
- ----------------- ---------------------------------- -------------- --------------
P-3               Plumbing Details                   TBP
- ----------------- ---------------------------------- -------------- --------------
P-4               Plumbing Details                   TBP
- ----------------- ---------------------------------- -------------- --------------
P-5               Plumbing Details                   TBP
- ----------------- ---------------------------------- -------------- --------------

E-1               One Line Diagram                   1/14/98
- ----------------- ---------------------------------- -------------- --------------
E-2               Electrical Floor Plan              TBP
- ----------------- ---------------------------------- -------------- --------------
E-3               Lighting Plan                      TBP
- ----------------- ---------------------------------- -------------- --------------
E-4               Power Plan                         TBP
- ----------------- ---------------------------------- -------------- --------------
E-5               Electrical Details                 TBP
- ----------------- ---------------------------------- -------------- --------------
E-6               Panel Schedules                    TBP
- ----------------------------------------------------------------------------------
</TABLE>

                                      J-15

<PAGE>

Section J                     List of Documents, Exhibits, and other Attachments

<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------
Sheet             Title                              Date           Rev
- ----------------- ---------------------------------- -------------- --------------
<S>               <C>                                <C>            <C>
5737-0601         Cleanroom Ceiling Interface        1/8/98
                  Detail
- ----------------- ---------------------------------- -------------- --------------
5737-0602         Ancillary Area Ceiling Interface   1/8/98
                  Detail
- ----------------- ---------------------------------- -------------- --------------
5737-0603         Cleanroom Flooring Interface       1/13/98
                  Detail
- ----------------- ---------------------------------- -------------- --------------
5737-0604         Ancillary Area Flooring            1/13/98
                  Interface Detail
- ----------------- ---------------------------------- -------------- --------------
7384-98           Steel Systems Mezzanine            1/13/98
- ----------------- ---------------------------------- -------------- --------------
</TABLE>


M-4, Equipment Schedules, provides the list and specifications of major
equipment items.

                                      J-16
<PAGE>

Section J                     List of Documents, Exhibits, and other Attachments

This West Building Conceptual Design Summary provides a summary of the facility
design requirements/specifications which must be met:

<TABLE>
<CAPTION>
- --------- -------------------------- ------------- -------------- ------- -------- ---------- --------- -------
Room No.  Room Name                   Cleanroom     Dimensions    Area     Temp    Humidity   Velocity   ACPH
                                     Classification   (LxWxH)      SqFt    F +/-    %RH +/-     FPM
- --------- -------------------------- ------------- -------------- ------- -------- ---------- --------- -------
<S>       <C>                        <C>           <C>            <C>     <C>      <C>        <C>       <C>
   1      Process Materials Storage  N/A           12x11x8        132     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- ---------- --------- -------
   2      Airlock #1                 100,000       12x11x8        132     70 +/-2     <60               20
- --------- -------------------------- ------------- -------------- ------- -------- ---------- --------- -------
   3      RadioPharm Lab #1          10,000        12x15x9        180     70 +/-2     <60               60
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   4      RadioPharm Lab #2          10,000        12x15x9        180     70 +/-2     <60               30
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   5      RadioPharm Lab #3          10,000        12x15x9        180     70 +/-2     <60               30
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   6      RadioPharm Lab #4          10,000        12x15x9        180     70 +/-2     <60               60
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   7      RadioPharm Lab #5          10,000        12x15x9        180     70 +/-2     <60               30
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   8      RadioPharm Lab #6          10,000        12x15x9        180     70 +/-2     <60               30
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   9      Hallway                    10,000        12x5.5x9       66      70 +/-2     <60               30
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   10     Airlock #2                 100,000       24x5.5x9       132     70 +/-2     <60               20
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   11     Autoclave & Storage        N/A           16x20.5x8      328     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   12     Assay                      N/A           16x15x8        240     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   13     Lead Pig Storage           N/A           11x10x8        110     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   14     Radiological Control Area  N/A           11x10x8        110     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   15     Hallway                    N/A           271x6.5x8      1762    70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   16     QC Analytical Lab          N/A                          355.5   70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   17     Pre Package 1              N/A           12x15x8        180     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   18     Vial Fill #1               1,000         12x18x8        216     70 +/-2     <60               40
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   19     Airlock 100K               100,000                      45      70 +/-2     <60               20
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   20     Airlock 10K                10,000                               70 +/-2     <60               30
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   21     Vial Fill #2               1,000         12x18x8        216     70 +/-2     <60               40
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   22     Cold Chemistry             100,000                      278.5   70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   23     Pre Package 2              N/A           12x18x8        216     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   24     Airlock 100K               100,000       7.5x6x8        45      70 +/-2     <60               20
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   25     Airlock 10K                10,000        7.5x6x8        45      70 +/-2     <60               30
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   26     Airlock 1K                 1,000         8x8x8          64      70 +/-2     <60               40
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   27     Aseptic Vials Receiving    100           16x8x8         128     70 +/-2     <60     90+/-18   60
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   28     Records                    N/A           16x10x8        160     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   29     QC Radiometric             N/A           16x10x8        160     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   30     Radio Assay                N/A           16x10x8        160     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   31     Glass Washing Vial         N/A                          483.5   70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   32     Quarantine                 N/A           12x7x8         84      70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   33     Label Storage              N/A           12x7x8         84      70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   34     Stability                  N/A           16x9x8         144     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   35     HP Lab                     N/A           16x9x8         144     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   36     Label Room                 N/A           16x9x8         144     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   37     Radiological Control Area  N/A           9x9x8          81      70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   38     Frisk Room                 N/A           5x8x8          40      70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   39     Men's Lockers              N/A                          198     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   40     Men's Sinks                N/A                          112     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   41     Men's Toilets              N/A                          115     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   42     Rad Gowning                N/A           13.5x11x8      148.5   70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   43     cGMP Cleaning Materials    N/A           5x8x8          40      70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   44     Women's Lockers            N/A                          198     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   45     Women's Sinks              N/A                          104     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   46     Women's Toilets            N/A                          109     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   47     Airlock 100K               100,000       5x9x8          45      70 +/-2     <60               20
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   48     Airlock 10K                10,000        5x9x8          45      70 +/-2     <60               30
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   49     Sterility Lab              1,000         15x9x8         135     70 +/-2     <60               40
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   50     Micro Prep                 N/A           25x9x8         225     70 +/-2     <60               10
- --------- -------------------------- ------------- -------------- ------- -------- ---------- --------- -------
                                                                  9,032
- --------- -------------------------- ------------- -------------- ------- -------- ---------- --------- -------
</TABLE>


                                      J-17

<PAGE>

Section J                     List of Documents, Exhibits, and other Attachments

<TABLE>
<CAPTION>
- --------- -------------------------- ------------- -------------- ------- -------- ---------- --------- -------
Room No.  Room Name                   Cleanroom     Dimensions    Area     Temp    Humidity   Velocity   ACPH
                                     Classification   (LxWxH)      SqFt    F +/-    %RH +/-     FPM
- --------- -------------------------- ------------- -------------- ------- -------- ---------- --------- -------
<S>       <C>                        <C>           <C>            <C>     <C>      <C>        <C>       <C>
   51     Chemistry Records          N/A           18x17x8        306     70 +/-2    <60                10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   52     Micro Lab                  N/A           15x9x8         135     70 +/-2    <60                10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   53     Incubator                  N/A           9x25x8         225     70 +/-2    <60                10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   54     QA Records                 N/A           18x27x8        486     70 +/-2    <60                10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   59     Hallway                    N/A           25x6.5x8       163     70 +/-2    <60                10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   60     Unpacking Room             N/A                                  70 +/-2    <60                10
- --------- -------------------------- ------------- -------------- ------- -------- --------- --------- -------
   61     Autoclave Tech Room        N/A                                  70 +/-2    <60                10
- --------- -------------------------- ------------- -------------- ------- -------- ---------- --------- -------
          Total - Rooms 51-54                                      1,446
- --------- -------------------------- ------------- -------------- ------- -------- ---------- --------- -------
          Total - Rooms 1-50                                       9,032
- --------- -------------------------- ------------- -------------- ------- -------- ---------- --------- -------
          Total Square Footage                                    10,478
- --------- -------------------------- ------------- -------------- ------- -------- ---------- --------- -------
</TABLE>


                                      J-18
<PAGE>

Section J                     List of Documents, Exhibits, and other Attachments

<TABLE>
<CAPTION>
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
Room No.  Room Name                  Number       Light      Diff.     Exhaust   Heat Gain   Air Flow   Supply
                                     of People  Level (FC) Pressure    (CFM)       (KW)
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
<S>       <C>                        <C>        <C>        <C>       <C>        <C>         <C>       <C>
   1      Process Materials Storage  0          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   2      Airlock #1                 1          75                                          OT        DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   3      RadioPharm Lab #1          1          75                   1315                   OT        DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   4      RadioPharm Lab #2          1          75                   350                    OT        DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   5      RadioPharm Lab #3          1          75                   350                    OT        DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   6      RadioPharm Lab #4          1          75                   1315                   OT        DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   7      RadioPharm Lab #5          1          75                   350                    OT        DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   8      RadioPharm Lab #6          1          75                   350                    OT        DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   9      Hallway                    0          75                                          OT        DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   10     Airlock #2                 1          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   11     Autoclave & Storage        0          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   12     Assay                      3          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   13     Lead Pig Storage           0          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   14     Radiological Control Area  1          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   15     Hallway                    2          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   16     QC Analytical Lab          1          75                   965                    RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   17     Pre Package 1              2          75                   965                    OT        DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   18     Vial Fill #1               1          75                   350                    OT        DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   19     Airlock 100K               1          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   20     Airlock 10K                0          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   21     Vial Fill #2               1          75                   350                    OT        DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   22     Cold Chemistry Lab         1          75                   1930                   RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   23     Pre Package 2              0          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   24     Airlock 100K               1          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   25     Airlock 10K                1          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   26     Airlock 1K                 1          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   27     Aseptic Vials Receiving    1          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   28     Records                    1          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   29     QC Radiometric                        75                   1930                   RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   30     Radio Assay                1          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   31     Glass Washing Vial         1          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   32     Quarantine                 0          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   33     Label Storage              0          50                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   34     Stability                  0          50                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   35     HP Lab                     0          50                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   36     Label Room                 0          50                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   37     Radiological Control Area  0          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   38     Frisk Area                 0          50                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   39     Men's Lockers              3          50                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   40     Men's Sinks                2          50                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   41     Men's Toilets              2          50                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   42     Rad Gowning                1          100                                         RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   43     cGMP Cleaning Materials    0          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   44     Women's Lockers            3          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   45     Women's Sinks              2          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   46     Women's Toilets            2          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   47     Airlock 100K               0          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   48     Airlock 10K                0          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   49     Sterility Lab              0          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   50     Micro Prep                 1          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
</TABLE>


                                      J-19
<PAGE>

Section J                     List of Documents, Exhibits, and other Attachments

<TABLE>
<CAPTION>
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
Room No.  Room Name                  Number     Light       Diff.     Exhaust   Heat Gain   Air Flow   Supply
                                     of People  Level (FC) Pressure    (CFM)       (KW)
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
<S>       <C>                        <C>        <C>        <C>       <C>        <C>         <C>       <C>
   51     Chemistry Records          2          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   52     Micro Lab                  0          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   53     Incubator                  0          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   54     QA Records                 2          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   59     Hallway                    0          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   60     Unpacking                  0          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   61     Autoclave Tech Room        0          75                                          RECIRC    DUCTED
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
</TABLE>


                                      J-20
<PAGE>

Section J                     List of Documents, Exhibits, and other Attachments

<TABLE>
<CAPTION>
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
Room No.  Room Name                   Return       HVAC      Floor     Wall      Ceiling     Fire        Other
                                       Type        Zone      Type      Type       Type       Protect
<S>       <C>                        <C>        <C>        <C>       <C>        <C>         <C>       <C>
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   1      Process Materials Storage  DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   2      Airlock #1                 DUCTED                1 Piece    Smooth      T-Grid    SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   3      RadioPharm Lab #1          DUCTED                1 Piece    Smooth      T-Grid    SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   4      RadioPharm Lab #2          DUCTED                1 Piece    Smooth      T-Grid    SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   5      RadioPharm Lab #3          DUCTED                1 Piece    Smooth      T-Grid    SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   6      RadioPharm Lab #4          DUCTED                1 Piece    Smooth      T-Grid    SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   7      RadioPharm Lab #5          DUCTED                1 Piece    Smooth      T-Grid    SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   8      RadioPharm Lab #6          DUCTED                1 Piece    Smooth      T-Grid    SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   9      Hallway                    DUCTED                1 Piece    Smooth      T-Grid    SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   10     Airlock #2                 DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   11     Autoclave & Storage        DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   12     Assay                      DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   13     Lead Pig Storage           DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   14     Radiological Control Area  DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   15     Hallway                    DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   16     QC Analytical Lab          DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   17     Pre Package 1              DUCTED                1 Piece    Smooth      T-Grid    SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   18     Vial Fill #1                DBWALL               1 Piece    Smooth      T-Grid    SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   19     Airlock 100K               DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   20     Airlock 10K                DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   21     Vial Fill #2               DBWALL                1 Piece    Smooth      T-Grid    SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   22     Cold Chemistry Lab         DUCTED                1 Piece    Smooth      T-Grid    SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   23     Pre Package 2              DUCTED                1 Piece    Smooth      T-Grid    SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   24     Airlock 100K               DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   25     Airlock 10K                DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   26     Airlock 1K                 DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   27     Aseptic Vials Receiving    DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   28     Records                    DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   29     QC Radiometric             DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   30     Radio Assay                DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   31     Glass Washing Vial         DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   32     Quarantine                 DUCTED                1 Piece    Smooth      T-Grid    SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   33     Label Storage              DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   34     Stability                  DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   35     HP Lab                     DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   36     Label Room                 DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   37     Radiological Control Area  DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   38     Frisk Room                 DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   39     Men's Lockers              DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   40     Men's Sinks                DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   41     Men's Toilets              DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   42     Decontamination            DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   43     Women's Restroom           DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   44     Women's Lockers            DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   45     Women's Sinks              DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   46     Women's Toilets            DBWALL                1 Piece    Smooth      T-Grid    SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   47     Airlock 100K               DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   48     Airlock 10K                DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   49     Sterility Lab              DUCTED                1 Piece    Smooth      T-Grid    SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   50     Micro Prep                 DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
</TABLE>



                                      J-21
<PAGE>

Section J                     List of Documents, Exhibits, and other Attachments

<TABLE>
<CAPTION>
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
Room No.  Room Name                   Return       HVAC      Floor     Wall      Ceiling     Fire        Other
                                       Type        Zone      Type      Type       Type       Protect
<S>       <C>                        <C>        <C>        <C>       <C>        <C>         <C>       <C>
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   51     Chemistry Records          DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   52     Micro Lab                  DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   53     Incubator                  DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   54     QA Records                 DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   59     Hallway                    DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   60     Unpacking Room             DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
   61     Autoclave Tech Room        DUCTED                1 Piece    Smooth       SUSP     SPRNK
- --------- -------------------------- ---------- ---------- --------- ---------- ----------- --------- ----------
</TABLE>


                                      J-22

<PAGE>

Section J                     List of Documents, Exhibits, and other Attachments

<TABLE>
<CAPTION>
- --------- -------------------------- ------------------------------------------------------------------------
Room No.  Room Name                                                 Equipment
- --------- -------------------------- ------------------------------------------------------------------------
<S>       <C>                        <C>
   1      Process Materials Storage
- --------- -------------------------- ------------------------------------------------------------------------
   2      Airlock #1
- --------- -------------------------- ------------------------------------------------------------------------
   3      RadioPharm Lab #1          Controlled Process Box (Class 100), Filling Machine, Movable Clean Air
                                     Projector
- --------- -------------------------- ------------------------------------------------------------------------
   4      RadioPharm Lab #2          Controlled Process Box (Class 100), Filling Machine, Movable Clean Air
                                     Projector
- --------- -------------------------- ------------------------------------------------------------------------
   5      RadioPharm Lab #3          Controlled Process Box (Class 100), Filling Machine, Movable Clean Air
                                     Projector
- --------- -------------------------- ------------------------------------------------------------------------
   6      RadioPharm Lab #4          Controlled Process Box (Class 100), Filling Machine, Movable Clean Air
                                     Projector
- --------- -------------------------- ------------------------------------------------------------------------
   7      RadioPharm Lab #5          Controlled Process Box (Class 100), Filling Machine, Movable Clean Air
                                     Projector
- --------- -------------------------- ------------------------------------------------------------------------
   8      RadioPharm Lab #6          Controlled Process Box (Class 100), Filling Machine, Movable Clean Air
                                     Projector
- --------- -------------------------- ------------------------------------------------------------------------
   9      Hallway
- --------- -------------------------- ------------------------------------------------------------------------
   10     Airlock #2
- --------- -------------------------- ------------------------------------------------------------------------
   11     Autoclave & Storage        Autoclave, Pyrogen Oven
- --------- -------------------------- ------------------------------------------------------------------------
   12     Assay                      4 Dose Calibrator Ionization Chambers, Computer
- --------- -------------------------- ------------------------------------------------------------------------
   13     Lead Pig Storage
- --------- -------------------------- ------------------------------------------------------------------------
   14     Radiological Control Area
- --------- -------------------------- ------------------------------------------------------------------------
   15     Hallway
- --------- -------------------------- ------------------------------------------------------------------------
   16     QC Analytical Lab
- --------- -------------------------- ------------------------------------------------------------------------
   17     Pre Package 1
- --------- -------------------------- ------------------------------------------------------------------------
   18     Vial Fill #1
- --------- -------------------------- ------------------------------------------------------------------------
   19     Airlock 100K
- --------- -------------------------- ------------------------------------------------------------------------
   20     Airlock 10K
- --------- -------------------------- ------------------------------------------------------------------------
   21     Vial Fill #2
- --------- -------------------------- ------------------------------------------------------------------------
   22     Cold Chemistry
- --------- -------------------------- ------------------------------------------------------------------------
   23     Pre Package 2              Crimping Machine, Moveable Clean Air Projector
- --------- -------------------------- ------------------------------------------------------------------------
   24     Airlock 100K
- --------- -------------------------- ------------------------------------------------------------------------
   25     Airlock 10K
- --------- -------------------------- ------------------------------------------------------------------------
   26     Airlock 1K
- --------- -------------------------- ------------------------------------------------------------------------
   27     Aseptic Vials Receiving    Stoppering Machine
- --------- -------------------------- ------------------------------------------------------------------------
   28     Quarantine
- --------- -------------------------- ------------------------------------------------------------------------
   29     QC Radiometric
- --------- -------------------------- ------------------------------------------------------------------------
   30     Radio Assay                HPGe Gamma Detector
- --------- -------------------------- ------------------------------------------------------------------------
   31     Glass Washing Vial         Vial Washer, Stopper Washer, Dbl Door Autoclave, Dbl Door Hot Air
                                     Sterilizer
- --------- -------------------------- ------------------------------------------------------------------------
   32     Quarantine
- --------- -------------------------- ------------------------------------------------------------------------
   33     Label Storage              Labeling Machine
- --------- -------------------------- ------------------------------------------------------------------------
   34     Stability                  Stability Chambers
- --------- -------------------------- ------------------------------------------------------------------------
   35     HP Lab                     Misc HP Equipment/Detectors
- --------- -------------------------- ------------------------------------------------------------------------
   36     Label Room                 Computer/Printer
- --------- -------------------------- ------------------------------------------------------------------------
   37     Radiological Control Area
- --------- -------------------------- ------------------------------------------------------------------------
   38     Frisk Room                 Survey Instruments
- --------- -------------------------- ------------------------------------------------------------------------
   39     Men's Lockers
- --------- -------------------------- ------------------------------------------------------------------------
   40     Men's Sinks
- --------- -------------------------- ------------------------------------------------------------------------
   41     Men's Toilets
- --------- -------------------------- ------------------------------------------------------------------------
   42     Gowning
- --------- -------------------------- ------------------------------------------------------------------------
   43     cGMP Cleaning Materials
- --------- -------------------------- ------------------------------------------------------------------------
   44     Women's Lockers
- --------- -------------------------- ------------------------------------------------------------------------
   45     Women's Sinks
- --------- -------------------------- ------------------------------------------------------------------------
   46     Women's Toilets
- --------- -------------------------- ------------------------------------------------------------------------
   47     Airlock 100K
- --------- -------------------------- ------------------------------------------------------------------------
   48     Airlock 10K
- --------- -------------------------- ------------------------------------------------------------------------
   49     Sterility Lab
- --------- -------------------------- ------------------------------------------------------------------------
   50     Micro Prep
- --------- -------------------------- ------------------------------------------------------------------------
</TABLE>


                                      J-23
<PAGE>

Section J                     List of Documents, Exhibits, and other Attachments

<TABLE>
<CAPTION>
- --------- -------------------------- ------------------------------------------------------------------------
Room No.  Room Name                                                 Equipment
- --------- -------------------------- ------------------------------------------------------------------------
<S>       <C>                        <C>
   51     Chemistry Records
- --------- -------------------------- ------------------------------------------------------------------------
   52     Micro Lab
- --------- -------------------------- ------------------------------------------------------------------------
   53     Inclubator                 Incubators
- --------- -------------------------- ------------------------------------------------------------------------
   54     QA Records
- --------- -------------------------- ------------------------------------------------------------------------
   59     Hallway
- --------- -------------------------- ------------------------------------------------------------------------
   60     Unpacking Room
- --------- -------------------------- ------------------------------------------------------------------------
   61     Autoclave Tech Room        Autoclave
- --------- -------------------------- ------------------------------------------------------------------------
</TABLE>



                                      J-24
<PAGE>

Section J                     List of Documents, Exhibits, and other Attachments

<TABLE>
<CAPTION>
                                                                 Utilities Schedule
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
Room No.  Room Name                TW      PW      SD     FD      HD     IC     WFI     CA      N(2)   VAC
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
<S>       <C>                     <C>    <C>     <C>     <C>    <C>     <C>    <C>     <C>    <C>     <C>
   1      Process Materials
          Storage
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   2      Airlock #1              x      .       x
                                                 +sink
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   3      RadioPharm Lab #1              .       .               x-GB   x              x-GB   x-GB    x-GB
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   4      RadioPharm Lab #2              .                       x-GB   x              x-GB   x-GB    x-GB
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   5      RadioPharm Lab #3              .                       x-GB   x              x-GB   x-GB    x-GB
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   6      RadioPharm Lab #4              .       x               x-GB   x      x       x-GB   x-GB    x-GB
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   7      RadioPharm Lab #5              .                       x-GB   x              x-GB   x-GB    x-GB
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   8      RadioPharm Lab #6              .                       x-GB   x              x-GB   x-GB    x-GB
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   9      Hallway
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   10     Airlock #2
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   11     Autoclave & Storage     x      x       x       x              x                             x
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   12     Assay
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   13     Lead Pig Storage                                                             x
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   14     Radiological Control
          Area
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   15     Hallway
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   16     QC Analytical  Lab      x      x       x                      x              x      x       x-
                                                                                       -hood  -hood   hood
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   17     Pre Package Lab                                               x
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   18     Vial Fill #1                   x       x                x     x              x-GB   x-GB    x-GB
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   19     Airlock 100K                           x+sink
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   20     Airlock 10K
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   21     Vial Fill #2                   x                      x       x              x-GB   x-GB    x-GB
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   22     Cold Chemistry Lab             x       x                      x      x              x-GB    x-GB
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   23     Pre Package 2                                                                x
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   24     Airlock 100K            x              x+sink
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   25     Airlock 10K
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   26     Airlock 1K
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   27     Aseptic Vials                                                                x
          Receiving
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   28     Quarantine
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   29     QC Radiometric          x      x       x                                     x      x       x
                                                                                       -hood  -hood   -hood
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   30     Radio Assay
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   31     Glass Washing Vial      x      x       x+sink  3x             x      x       x      x       x
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   32     Quarantine
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   33     Label Storage                                                                x
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   34     Stability                                      x              x
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   35     HP Lab                                                        x
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   36     Label Room
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   37     Radiological Control
          Area
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   38     Frisk Room              x              x
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   39     Men's Lockers           x              x
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   40     Men's Sinks             x              x
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   41     Men's Toilets           x              x
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   42     Degowning               .              .
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   43     cGMP Closet             x              x
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   44     Women's Lockers         x              x
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   45     Women's Sinks           x              x
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   46     Women's Toilets         x              x
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   47     Airlock 100k            x              x+sink
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   48     Airlock 10K
- --------- ----------------------- ------ ------- ------- ------ ------- ------ ------- ------ ------- ------
   49     Sterility Lab 1k
- --------- ----------------------- ------ ------  ------- ------ ------  ------ ------- ------- ------ ------
   50     Micro Prep              x      x       x
- --------- ----------------------- ------ ------  ------- ------ ------  ------ ------- ------- ------ ------
   51     Chemistry Records
- --------- ----------------------- ------ ------  ------- ------ ------  ------ ------- ------- ------ ------
   52     Micro Lab               x      x       x                                             x      x
- --------- ----------------------- ------ ------  ------- ------ ------  ------ ------- ------- ------ ------
   53     Incubator                                                                            x      x
- --------- ----------------------- ------ ------  ------- ------ ------  ------ ------- ------- ------ ------
   54     QA Records
- --------- ----------------------- ------ ------  ------- ------ ------  ------ ------- ------- ------ ------
   59     Hallway
- --------- ----------------------- ------ ------  ------- ------ ------  ------ ------- ------- ------ ------
   60     Unpacking Room
- --------- ----------------------- ------ ------  ------- ------ ------  ------ ------- ------- ------ ------
   61     Autoclave Tech Room                            x
- --------- ----------------------- ------ ------  ------- ------ ------  ------ ------- ------- ------ ------
</TABLE>


TW=Hot and Cold Tap Water PW=Purified Water USP SD=Sink Drain FD=Floor Drain
VAC=Vacuum N2 =Nitrogen HD=Drain for radioactive liquids IC=Intercom System
SCS=Safety Communication System CA=Compressed Air GB=Glove Box -Provide Valved
Connection 4' from corner/ 8' above FFL

                                      J-25
<PAGE>


Section K                                     Representations and Certifications

ARTICLE K-1: CORPORATE STATUS Seller is a Sole Proprietorship __N/A___.

Seller is a Partnership duly organized, valid and existing and in good standing
under the laws of ______N/A_________.

Seller is a Corporation duly organized, valid and existing and in good standing
under the laws of Delaware.

ARTICLE K-2:  AUTHORITY

The execution, delivery and performance of this Contract and all other
agreements, instruments and documents to be delivered hereunder have been duly
and validly authorized by the Board of Directors of Seller or other appropriate
authority. No other action must be taken to make this Contract and all other
agreements, instruments and documents to be executed and delivered hereunder,
valid and legally binding upon Seller in accordance with their respective terms,
subject to general principles of equity and accept as enforceability thereof may
be limited by applicable bankruptcy, insolvency, reorganization or other similar
laws of general application relating to creditors' rights.

ARTICLE K-3:  COMPLIANCE WITH LAW

Seller has complied with and is not in violation of applicable statutes, laws
and regulations which would affect its ability to perform its respective
obligations hereunder.

ARTICLE K-4:  WORKMAN'S COMPENSATION INSURANCE

Seller certifies that during the term of this contract that he will maintain, at
his expense workmen's compensation insurance and comprehensive liability
insurance, providing coverage against liability for bodily injury, death, and
property damage, in the minimum amount of $1,000,000 per occurrance.
Certificates regarding such coverage are available upon request.


                                      K-31
<PAGE>

                                 Signature Page

- --------------------------------------------------------------------------------
                                                   Contract Number:     PM-801
                                                   Mod Number:          Orig
                                                   Date:                2/06/98
- --------------------------------------------------------------------------------

The above pages, through this page and including any attachments referenced
herein, constitute the full content of this contract between International
Isotopes Inc. and MSS Technologies.

SIGNATURES

Executed as of February 5, 1998

SELLER                       INTERNATIONAL ISOTOPES INC.

<TABLE>
<CAPTION>
By:     /s/ James Kavanagh   By:    /s/ Ira Lon Morgan      By:   /s/ Tomy Thompson
        ------------------          --------------------           ------------------
<S>                          <C>                            <C>    
Name:   James Kavanagh       Name:  Ira Lon Morgan          Name:  Tommy Thompson
Title:  Vice-President       Title: Chairman                Title: Exec. Vice President
Date:   2/5/98               Date:  2/5/98                  Date:  2/5/98
</TABLE>

<TABLE> <S> <C>


<ARTICLE>                     5
<CIK>                         0001038277
<NAME>                        International Isotopes
<MULTIPLIER>                                          1
<CURRENCY>                                         USD
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-31-1998
<PERIOD-END>                               MAR-31-1998
<EXCHANGE-RATE>                                      1
<CASH>                                       8,530,554
<SECURITIES>                                   277,803
<RECEIVABLES>                                  111,143
<ALLOWANCES>                                         0
<INVENTORY>                                    748,853
<CURRENT-ASSETS>                            10,267,655
<PP&E>                                      10,606,729
<DEPRECIATION>                                  29,290
<TOTAL-ASSETS>                              20,845,094
<CURRENT-LIABILITIES>                         1862,109
<BONDS>                                              0
                                0
                                          0
<COMMON>                                        63,709
<OTHER-SE>                                           0
<TOTAL-LIABILITY-AND-EQUITY>                20,845,094
<SALES>                                        150,000
<TOTAL-REVENUES>                               150,000
<CGS>                                           62,830
<TOTAL-COSTS>                                   62,830
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                               (573,033)
<INCOME-TAX>                                    15,000
<INCOME-CONTINUING>                           (588,033)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (588,033)
<EPS-PRIMARY>                                     (0.9)
<EPS-DILUTED>                                     (0.9)
        


</TABLE>


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