MOLTEN METAL TECHNOLOGY INC /DE/
8-K, 1998-06-29
HAZARDOUS WASTE MANAGEMENT
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<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549




                                    FORM 8-K

                                 CURRENT REPORT

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


         Date of Report (Date of earliest event reported): June 26, 1998


                          MOLTEN METAL TECHNOLOGY, INC.
               (Exact Name of Registrant as Specified in Charter)


            DELAWARE                       0-21042               52-1659959
 (State or Other Jurisdiction of   (Commission File Number)   (I.R.S. Employer
          Incorporation)                                     Identification No.)



                     421 CURRANT ROAD, FALL RIVER, MA 02720
                     Address of Principal Executive Offices

       Registrant's telephone number, including area code: (508) 675-3900
<PAGE>   2
ITEM 5. OTHER EVENTS

Monthly Operating Reports Filed With United States Trustee

         On December 3, 1997, Molten Metal Technology, Inc. (the "Company") and
its subsidiaries filed a voluntary petition for reorganization under Chapter 11
of the U.S. Bankruptcy Code. The petition was filed in the U.S. Bankruptcy Court
for the District of Massachusetts (Eastern Division). The case numbers are as
follows:

         Molten Metal Technology, Inc.      97-21385-CJK
         MMT of Tennessee Inc.              97-21386-CJK
         MMT Federal Holdings, Inc.         97-21387-CJK
         M4 Environmental Management Inc.   97-21388-CJK
         M4 Environmental L.P.              97-21389-CJK

         Pursuant to Federal Rule of Bankruptcy Procedure 2015 and the United
States Trustee's Operating Guidelines and Reporting Requirements for Chapter 11
cases, each of the Company, MMT of Tennessee, Inc., MMT Federal Holdings, Inc.,
M4 Environmental Management Inc., and M4 Environmental, L.P. (collectively, the
"Companies") must file a Monthly Operating Report (MOR) with the Office of the
United States Trustee (Region One). The MOR for each of the Companies for the
month ending May 31, 1998, together with a consolidated report, were filed with
the Office of the United States Trustee on June 26, 1998. Copies of these MORs
are attached hereto as Exhibits 99.1 through 99.6 and are incorporated herein by
reference.

ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS

(c)               Exhibits

Exhibit
Number            Description of Document

99.1              Monthly Operating Report (Consolidated) of the Company and
                  its subsidiaries for the month ending April 30, 1998 (1)

99.2              Monthly Operating Report of the Company for the month ending 
                  April 30, 1998 (1)

99.3              Monthly Operating Report of the Company's subsidiary MMT
                  of Tennessee Inc. for the month ending April 30, 1998 (1)

99.4              Monthly Operating Report of the Company's subsidiary MMT 
                  Federal Holdings, Inc. for the month ending April 30, 1998 (1)
<PAGE>   3
99.5              Monthly Operating Report of the Company's subsidiary M4 
                  Environmental Management Inc. for the month ending April 30,
                  1998 (1)

99.6              Monthly Operating Report of the Company's subsidiary M4
                  Environmental, L.P. for the month ending April 30, 1998 (1)

(1)    The Company agrees to furnish supplementally a copy of any omitted
       schedule or similar attachment to the Commission upon its request.


                                   SIGNATURES

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                    MOLTEN METAL TECHNOLOGY, INC.



Dated:  June 29, 1998               By: /s/ F. Gordon Bitter
                                        -------------------------
                                    F. Gordon Bitter
                                    Chief Executive Officer and
                                    Chief Financial Officer

<PAGE>   1
                                                                    Exhibit 99.1

                         UNITED STATES BANKRUPTCY COURT
                            DISTRICT OF MASSACHUSETTS
                                EASTERN DIVISION




IN RE:    MOLTEN METAL (CONSOLIDATED)                    CASE NO.:  97-21385-CJK
          DEBTOR                                        JUDGE:   CAROL J. KENNER


                                                                      CHAPTER 11

MONTHLY OPERATING REPORT FOR MONTH ENDING:              5/31/98



COMES NOW, MOLTEN METAL TECHNOLOGY, INC. (CONSOLIDATED), Debtor in Possession,
and hereby its Monthly Operating Report for the period commencing 5/1/98 and
ending 5/31/98 as shown by the report and exhibits consisting of 10 pages and
containing the following, as indicated:

         X        Monthly Reporting Questionnaire (Attachment 1)

         X        Comparative Balance Sheets (Forms OPR-1 and OPR-2)

         X        Summary of Accounts Receivable (Form OPR-3)

         X        Schedule of Post-Petition Liabilities (Form OPR-4)

         X        Income Statement (Form OPR-5)

         X        Statement of Sources and Uses of Cash (Form OPR-6)


I declare under penalty of perjury that this report and all attachments are true
and correct to the best of my knowledge and belief.


Date:          6/26/98           DEBTOR-IN-POSSESSION
                                 By:              /s/ F. Gordon Bitter
                                                  ------------------------------
                                 Name & Title:    F. Gordon Bitter, CEO & CFO
                                                  Molten Metal Technology, Inc.
                                                  421 Currant Road
                                                  Fall River, MA  02720
                                                  Telephone:    508-324-6497
<PAGE>   2
                         UNITED STATES BANKRUPTCY COURT
                        EASTERN DISTRICT OF MASSACHUSETTS


IN RE:    MOLTEN METAL TECHNOLOGY, INC. (CONSOLIDATED)   CASE NO.:  97-21385-CJK
            DEBTOR                                      JUDGE:   CAROL J. KENNER


                                                                      CHAPTER 11


NOTE TO THE MONTHLY OPERATING REPORT:


Consistent with the Debtor's historical accounting practices, this operating
report accounts for all cash transfers among the Debtor and its affiliates and
allocates some, but not all, of the expenses borne by one affiliate for the
benefit of another or the others. In the absence of a decision for substantive
consolidation, the Debtor will develop an appropriate allocation of expenses
among the affiliated entities.
<PAGE>   3
                           COMPARATIVE BALANCE SHEETS                FORM OPR-1


CASE NAME: MOLTEN METAL TECHNOLOGY, INC. 
(CONSOLIDATED)
CASE NO.:  97-21385-CJK

                                                            MONTH ENDED: 5/31/98

<TABLE>
<CAPTION>
                                                            FILING          MONTH           MONTH          MONTH           MONTH   
                                                             DATE           ENDED           ENDED          ENDED           ENDED   
                                                           12/3/97        12/31/97         1/31/98        2/28/98         3/31/98  
                                                    -------------------------------------------------------------------------------
<S>                                                 <C>                 <C>             <C>            <C>             <C>
ASSETS

CURRENT ASSETS

Cash                                                      4,654,326       7,712,988       7,222,698      5,141,902       1,679,329 
Other negotiable instruments (i.e.  CD's,
             Treasury Bills, Etc.)
Accounts Receivable-Trade, Net (OPR-3)                    7,589,596       7,768,045       6,001,822      6,121,182       7,604,873 
Less:   allowance for doubtful accounts                    (150,000)       (150,000)       (150,000)      (150,000)       (150,000)
Accounts Receivable-Other                                 3,362,193       3,114,234       3,630,556      3,936,087       3,456,844 
Inventory, at cost                                        4,642,718       2,999,979       2,981,683      2,953,384       3,252,606 
Prepaid expenses                                          2,944,501       3,432,683       3,590,453      3,912,070       4,053,504 
Deposits                                                    199,046         176,955         258,371        264,731         327,840 
Other:
             Investment in Nichimen Joint Venture           433,739         433,739         433,739        433,739         433,739 
             Investment in CW, LLC                        1,497,718       1,497,718       1,497,718      1,497,718       1,497,718 
             Long Term Notes Receivable                  20,806,950      20,806,950      20,806,950     20,806,950      20,806,950 
             Restricted Cash Collateral Deposits          3,921,953       3,930,999       3,940,000      3,948,082       4,236,270 


                                                    -------------------------------------------------------------------------------
TOTAL CURRENT ASSETS                                     49,902,740      51,724,290      50,213,990     48,865,845      47,209,673 
                                                    -------------------------------------------------------------------------------

PROPERTY, PLANT AND EQUIPMENT, AT COST                  158,480,555     158,577,054     158,881,900    159,301,814     159,543,659 
Less:  Accumulated Depreciation                         (23,789,824)    (24,685,394)    (25,710,487)   (26,735,581)    (27,727,471)

                                                    -------------------------------------------------------------------------------
NET PROPERTY, PLANT AND EQUIPMENT                       134,690,731     133,891,660     133,171,413    132,566,233     131,816,188 
                                                    -------------------------------------------------------------------------------

OTHER ASSETS (ITEMIZED IF VALUE EXCEEDS
             10% OF "TOTAL ASSETS")
             Intangible Assets                           26,143,973      26,143,421      26,168,331     26,189,604      26,398,877 
             Less:  Accumulated Amortization             (4,212,236)     (4,412,755)     (4,604,973)    (4,797,190)     (4,992,683)

                                                    -------------------------------------------------------------------------------
TOTAL OTHER ASSETS                                       21,931,737      21,730,666      21,563,358     21,382,414      21,406,194 
                                                    -------------------------------------------------------------------------------

TOTAL ASSETS                                            206,525,208     207,346,616     204,948,761    202,824,492     200,432,055 
                                                    ===============================================================================
</TABLE>
<TABLE>
<CAPTION>
                                                       MONTH           MONTH           MONTH       
                                                       ENDED           ENDED           ENDED       
                                                      4/30/98         5/31/98                      
                                                  ------------------------------------------------ 
<S>                                               <C>                 <C>              <C>
ASSETS                                                                                             
                                                                                                   
CURRENT ASSETS                                                                                     
                                                                                                   
Cash                                                      622,084         176,049                  
Other negotiable instruments (i.e.  CD's,                                                          
             Treasury Bills, Etc.)                                                                 
Accounts Receivable-Trade, Net (OPR-3)                  7,663,418       7,512,835                  
Less:   allowance for doubtful accounts                  (150,000)       (150,000)                 
Accounts Receivable-Other                               3,998,122       3,940,945                  
Inventory, at cost                                      3,070,450       3,332,996                  
Prepaid expenses                                        3,798,824       4,556,459                  
Deposits                                                  327,840         327,840                  
Other:                                                                                             
             Investment in Nichimen Joint Venture         433,739         433,739                  
             Investment in CW, LLC                      1,497,718       1,497,718                  
             Long Term Notes Receivable                20,806,950      20,806,950                  
             Restricted Cash Collateral Deposits        4,236,270       4,236,270                  
                                                                                                   
                                                                                                   
                                                  ------------------------------------------------ 
TOTAL CURRENT ASSETS                                   46,505,415      46,671,801               0  
                                                  ------------------------------------------------ 
                                                                                                   
PROPERTY, PLANT AND EQUIPMENT, AT COST                160,680,666     161,580,803                  
Less:  Accumulated Depreciation                       (28,736,212)    (29,769,307)                 
                                                                                                   
                                                  ------------------------------------------------ 
NET PROPERTY, PLANT AND EQUIPMENT                     131,944,454     131,811,496               0  
                                                  ------------------------------------------------ 
                                                                                                   
OTHER ASSETS (ITEMIZED IF VALUE EXCEEDS                                                            
             10% OF "TOTAL ASSETS")                                                                
             Intangible Assets                         26,488,284      26,564,368                  
             Less:  Accumulated Amortization           (5,199,409)     (5,413,005)                 
                                                                                                   
                                                  ------------------------------------------------ 
TOTAL OTHER ASSETS                                     21,288,875      21,151,363               0  
                                                  ------------------------------------------------ 
                                                                                                   
TOTAL ASSETS                                          199,738,744     199,634,660               0  
                                                  ================================================ 
</TABLE>
<PAGE>   4
                           COMPARATIVE BALANCE SHEETS                FORM OPR-2


CASE NAME: MOLTEN METAL TECHNOLOGY, INC. 
(CONSOLIDATED)
CASE NO.:  97-21385-CJK


                                                            MONTH ENDED: 5/31/98
<TABLE>
<CAPTION>
                                                               FILING          MONTH           MONTH           MONTH      
                                                                DATE           ENDED           ENDED           ENDED      
                                                               12/3/97        12/31/97        1/31/98         2/28/98     
                                                           ---------------------------------------------------------------
<S>                                                        <C>                <C>             <C>             <C>
LIABILITIES

POST PETITION LIABILITIES

Secured Debt (See Form OPR-4)                                                   5,260,000       7,000,000       7,000,000 
Unsecured Debt-Intercompany Obligations due to cash
             transfers in Post Petition Operations
Unsecured Debt-Obligations incurred in Post Petition
             Operations (See Form OPR-4)                                        3,076,569       2,266,637       4,943,854 

                                                           ---------------------------------------------------------------
TOTAL POST PETITION LIABILITIES                                          0      8,336,569       9,266,637      11,943,854 

PRE PETITION INTERCOMPANY LIABILITIES
DEFERRED REVENUE/DEFERRED INCOME                                12,378,455     10,623,523      10,213,992      10,200,940 
TOTAL OTHER PRE PETITION LIABILITIES                           242,148,750    241,463,644     242,349,829     240,705,035 
                                                           ---------------------------------------------------------------

TOTAL LIABILITIES                                              254,527,205    260,423,736     261,830,458     262,849,829 
                                                           ---------------------------------------------------------------

SHAREHOLDERS' EQUITY (DEFICIT)

Preferred Stock                                                 15,874,471     16,793,713      17,319,518      17,845,322 
Common Stock                                                       237,810        237,810         237,810         237,810 
Paid in Capital                                                170,893,690    170,893,690     170,893,907     170,893,907 
Valuation Allowance                                                  9,683         11,636
Dividends Paid                                                  (4,343,230)    (5,262,472)     (5,788,277)     (6,314,081)
Treasury Stock                                                  (1,251,319)    (1,251,319)     (1,251,319)     (1,251,319)
Deferred Compensation                                             (127,137)      (120,489)       (113,842)       (107,838)
Retained Earnings
             Through Filing Date                              (229,295,965)  (229,295,965)   (229,295,965)   (229,295,965)
             Post Filing Date                                                  (5,083,724)     (8,883,529)    (12,033,173)

                                                           ---------------------------------------------------------------
TOTAL SHAREHOLDERS' EQUITY (DEFICIT)                           (48,001,997)   (53,077,120)    (56,881,697)    (60,025,337)
                                                           ---------------------------------------------------------------

TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY                     206,525,208    207,346,616     204,948,761     202,824,492 
                                                           ===============================================================
</TABLE>
<TABLE>
<CAPTION>
                                                            MONTH          MONTH           MONTH           MONTH         
                                                            ENDED          ENDED           ENDED           ENDED         
                                                           3/31/98        4/30/98         5/31/98                        
                                                       ---------------------------------------------------------------   
                                                                                                                         
<S>                                                    <C>                <C>             <C>              <C>
LIABILITIES                                                                                                              
                                                                                                                         
POST PETITION LIABILITIES                                                                                                
                                                                                                                         
Secured Debt (See Form OPR-4)                                7,000,000      7,000,000       9,300,000                    
Unsecured Debt-Intercompany Obligations due to cash                                                                      
             transfers in Post Petition Operations                                                                       
Unsecured Debt-Obligations incurred in Post Petition                                                                     
             Operations (See Form OPR-4)                     5,414,210      5,228,901       5,733,366                    
                                                                                                                         
                                                       ---------------------------------------------------------------   
TOTAL POST PETITION LIABILITIES                             12,414,210     12,228,901      15,033,366               0    
                                                                                                                         
PRE PETITION INTERCOMPANY LIABILITIES                                                                                    
DEFERRED REVENUE/DEFERRED INCOME                            10,180,107     10,347,984      10,194,496                    
TOTAL OTHER PRE PETITION LIABILITIES                       240,424,837    241,011,506     240,761,011                    
                                                       ---------------------------------------------------------------   
                                                                                                                         
TOTAL LIABILITIES                                          263,019,154    263,588,391     265,988,873               0    
                                                       ---------------------------------------------------------------   
                                                                                                                         
SHAREHOLDERS' EQUITY (DEFICIT)                                                                                           
                                                                                                                         
Preferred Stock                                             18,371,126     18,011,989      17,652,851                    
Common Stock                                                   237,810        237,810         237,810                    
Paid in Capital                                            170,893,907    170,893,690     170,893,690                    
Valuation Allowance                                                                                                      
Dividends Paid                                              (6,830,562)    (6,471,425)     (6,112,287)                   
Treasury Stock                                              (1,251,319)    (1,251,319)     (1,251,319)                   
Deferred Compensation                                         (101,191)       (94,758)        (88,111)                   
Retained Earnings                                                                                                        
             Through Filing Date                          (229,295,965)  (229,295,965)   (229,295,965)                   
             Post Filing Date                              (14,610,905)   (15,879,669)    (18,390,928)                   
                                                                                                                         
                                                       ---------------------------------------------------------------   
TOTAL SHAREHOLDERS' EQUITY (DEFICIT)                       (62,587,099)   (63,849,647)    (66,354,259)              0    
                                                       ---------------------------------------------------------------   
                                                                                                                         
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY                 200,432,055    199,738,744     199,634,614               0    
                                                       ===============================================================   
</TABLE>
<PAGE>   5
                         SUMMARY OF ACCOUNTS RECEIVABLE              FORM OPR-3


CASE NAME: MOLTEN METAL TECHNOLOGY, INC. 
(CONSOLIDATED)
CASE NUMBER:  97-21385-CJK


                                                            MONTH ENDED: 5/31/98

<TABLE>
<CAPTION>
                                                                     0-30         31-60         61-90         OVER
                                                       TOTAL         DAYS          DAYS         DAYS         90 DAYS

                                                    --------------------------------------------------------------------
<S>                                                 <C>              <C>          <C>           <C>          <C>      
DATE OF FILING:   12/3/97                              7,589,596     4,116,989      943,972       797,630     1,731,005
                  Allowance for doubtful accounts       (150,000)                                              (150,000)
                                                    --------------------------------------------------------------------
                                                       7,439,596     4,116,989      943,972       797,630     1,581,005
                                                    ====================================================================

MONTH:            12/31/97                             7,768,045     1,875,415    3,473,011       519,172     1,900,447
                  Allowance for doubtful accounts       (150,000)                                              (150,000)
                                                    --------------------------------------------------------------------
                                                       7,618,045     1,875,415    3,473,011       519,172     1,750,447
                                                    ====================================================================

MONTH:            1/31/98                              6,001,822     1,290,680    1,267,373     1,458,561     1,985,208
                  Allowance for doubtful accounts       (150,000)                                              (150,000)
                                                    --------------------------------------------------------------------
                                                       5,851,822     1,290,680    1,267,373     1,458,561     1,835,208
                                                    ====================================================================

MONTH:            2/28/98                              6,121,182     1,377,798    1,019,381       572,967     3,151,036
                  Allowance for doubtful accounts       (150,000)                                              (150,000)
                                                    --------------------------------------------------------------------
                                                       5,971,182     1,377,798    1,019,381       572,967     3,001,036
                                                    ====================================================================

MONTH:            3/31/98                              7,604,873     3,156,081    1,505,814       286,492     2,656,486
                  Allowance for doubtful accounts       (150,000)                                              (150,000)
                                                    --------------------------------------------------------------------
                                                       7,454,873     3,156,081    1,505,814       286,492     2,506,486
                                                    ====================================================================

MONTH:            4/30/98                              7,663,418     3,222,525      851,867       791,510     2,797,516
                  Allowance for doubtful accounts       (150,000)                                              (150,000)
                                                    --------------------------------------------------------------------
                                                       7,513,418     3,222,525      851,867       791,510     2,647,516
                                                    ====================================================================

MONTH:            5/31/98                              7,512,835     1,659,753    2,879,561       361,683     2,611,838
                  Allowance for doubtful accounts       (150,000)                                              (150,000)
                                                    --------------------------------------------------------------------
                                                       7,362,835     1,659,753    2,879,561       361,683     2,461,838
                                                    ====================================================================
</TABLE>
<PAGE>   6
                     SCHEDULE OF POST PETITION LIABILITIES           FORM OPR-4


CASE NAME: MOLTEN METAL TECHNOLOGY, INC. 
(CONSOLIDATED)
CASE NUMBER:  97-21385-CJK


                                                            MONTH ENDED: 5/31/98
<TABLE>
<CAPTION>
                                                                                   DATE           DATE         TOTAL    
                                                                                 INCURRED         DUE           DUE     
                                                                           
                                                                             -------------------------------------------
<S>                                                                          <C>                <C>        <C>
TAXES PAYABLE                                                              
                                                                           
            Federal Income Taxes                                                                                    NONE
            FICA-Employer's Share                                                                                   NONE
            FICA-Employee's Share                                                                                   NONE
            Unemployment Tax                                                                                        NONE
            State Sales & Use Tax                                                                                   NONE
            State __________ Tax                                                                                    NONE
            Personal Property Tax                                                                                   NONE
                                                                           
                                                                                                           -------------
TOTAL TAXES PAYABLE                                                                                                    0
                                                                                                           -------------
                                                                           
POST PETITION SECURED DEBT                                                 
DIP FINANCING                                                              
            Post petition advances-Morgens Waterfall Financing               3/20/98-5/31/99    12/31/99       9,300,000
                                                                           
ACCRUED INTEREST PAYABLE                                                   
            Post petition interest on Morgens Waterfall Financing
                                                                           
                                                                                                           -------------
TOTAL POST PETITION SECURED DEBT                                                                               9,300,000
                                                                                                           -------------
                                                                           
                                                                           
POST PETITION UNSECURED DEBT                                               
TRADE ACCOUNTS PAYABLE & OTHER:                                            
            Trade Accounts Payable (see attached schedules)                                                    1,646,389
            Payroll withholdings                                           
            Accrued Payroll                                                
            Accrued expenses-Estimated liability incurred, but not invoiced
                 as of the end of the period and deferred obligations.                                         4,086,977
                                                                           
                                                                                                           -------------
TOTAL TRADE ACCOUNTS PAYABLE & OTHER                                                                           5,733,366
                                                                                                           -------------

TOTAL ALL POST PETITION LIABILITIES                                                                           15,033,366
                                                                                                           =============
</TABLE>
<TABLE>
<CAPTION>
                                                                                0-30         31-60         61-90         OVER      
                                                                                DAYS          DAYS         DAYS         90 DAYS    
                                                                                                                                   
                                                                             ------------------------------------------------------
<S>                                                                          <C>             <C>           <C>          <C>
TAXES PAYABLE                                                                                                                      
                                                                                                                                   
            Federal Income Taxes                                                                                                   
            FICA-Employer's Share                                                                                                  
            FICA-Employee's Share                                                                                                  
            Unemployment Tax                                                                                                       
            State Sales & Use Tax                                                                                                  
            State __________ Tax                                                                                                   
            Personal Property Tax                                                                                                  
                                                                                                                                   
                                                                             ------------------------------------------------------
TOTAL TAXES PAYABLE                                                                     0            0             0             0 
                                                                             ------------------------------------------------------
                                                                                                                                   
POST PETITION SECURED DEBT                                                                                                         
DIP FINANCING                                                                                                                      
            Post petition advances-Morgens Waterfall Financing                                                                     
                                                                                                                                   
ACCRUED INTEREST PAYABLE                                                                                                           
            Post petition interest on Morgens Waterfall Financing                                                                  
                                                                                                                                   
                                                                             ------------------------------------------------------
TOTAL POST PETITION SECURED DEBT                                                        0            0             0             0 
                                                                             ------------------------------------------------------
                                                                                                                                   
                                                                                                                                   
POST PETITION UNSECURED DEBT                                                                                                       
TRADE ACCOUNTS PAYABLE & OTHER:                                                                                                    
            Trade Accounts Payable (see attached schedules)                                                                        
            Payroll withholdings                                                                                                   
            Accrued Payroll                                                                                                        
            Accrued expenses-Estimated liability incurred, but not invoiced                                                        
                 as of the end of the period and deferred obligations.                                                             
                                                                                                                                   
                                                                             ------------------------------------------------------
TOTAL TRADE ACCOUNTS PAYABLE & OTHER                                                    0            0             0             0 
                                                                             ------------------------------------------------------
                                                                                                                                   
TOTAL ALL POST PETITION LIABILITIES                                                     0            0             0             0 
                                                                             ======================================================
</TABLE>
<PAGE>   7
                                INCOME STATEMENT                     FORM OPR-5


CASE NAME: MOLTEN METAL TECHNOLOGY, INC. 
(CONSOLIDATED)
CASE NO.:  97-21385-CJK

                                                            MONTH ENDED: 5/31/98

<TABLE>
<CAPTION>
                                                                        PRE          POST         MONTH        MONTH     
                                                                     PETITION      PETITION       ENDED        ENDED     
                                                                      12/3/97      12/31/97      1/31/98      2/28/98    
                                                                   ------------------------------------------------------
<S>                                                                <C>             <C>           <C>          <C>
NET REVENUE (INCOME)                                                           0    4,103,641     1,797,407    2,069,601 
                                                                   ------------------------------------------------------
                                                                   
COST OF GOODS SOLD                                                 
            Salaries & wages                                             224,548    1,676,135     1,353,865    1,050,129 
            Less:  Salaries & wages capitalized in fixed assets                                    (121,795)    (120,000)
            Benefits                                                                  562,849       318,037      314,271 
            Bad debt expense                                                           18,625
            Cost of goods sold                                                      1,200,000       (20,833)
            Decontamination & disposal                                                 26,758        26,758       26,758 
            Disposal costs-secondary wastes                                           112,496       105,018      431,112 
            Financing costs                                                           212,000         9,000
            Insurance                                                                 108,638       114,934       84,457 
            Legal services                                                            342,713                            
            Materials                                                               1,151,084       866,199      418,286 
            Office expense & supplies                                                  37,650        21,138       66,470 
            Other                                                                      18,202        57,436        8,528 
            Outside services                                                          814,013       443,144      473,118 
            Professional services                                                     857,587        59,868      145,646 
            Rent-equipment                                                            104,873        39,324       87,631 
            Rent-office/buildings                                                     264,752       317,269      107,221 
            Supplies-processing                                                        18,515
            Taxes                                                                      87,546        40,219       31,143 
            Telephone                                                                 134,438        46,167       38,809 
            Transportation                                                            110,472        93,218      164,655 
            Travel & entertainment                                                     43,509        71,260       80,591 
            Utilities                                                                 234,343         8,819       73,848 
                                                                   
                                                                   ------------------------------------------------------
TOTAL COST OF GOODS SOLD                                                 224,548    8,137,198     3,849,045    3,482,673 
                                                                   ------------------------------------------------------
                                                                   
INCOME BEFORE INTEREST, DEPRECIATION,                              
            TAXES, OR EXTRAORDINARY EXPENSES                            (224,548)  (4,033,557)   (2,051,638)  (1,413,072)
                                                                   ------------------------------------------------------
                                                                   
INTEREST(INCOME) EXPENSE                                                               62,539        90,855       91,010 
DEPRECIATION AND AMORTIZATION                                                       1,096,271     1,217,312    1,217,312 
INCOME TAX EXPENSE (BENEFIT)                                       
REORGANIZATION EXPENSE                                                                              440,000      428,250 
OTHER (INCOME) EXPENSE                                                               (108,643)
(GAIN) LOSS ON SALE OF ASSETS                                                                                            
                                                                   ------------------------------------------------------
                                                                   
NET INCOME (LOSS)                                                       (224,548)  (5,083,724)   (3,799,805)  (3,149,644)
                                                                   ======================================================
</TABLE>
<TABLE>
<CAPTION>
                                                                    MONTH         MONTH        MONTH         MONTH         MONTH   
                                                                    ENDED         ENDED        ENDED         ENDED         ENDED   
                                                                   3/31/98       4/30/98      5/31/98                              
                                                                 ------------------------------------------------------------------
<S>                                                              <C>             <C>          <C>            <C>           <C>     
NET REVENUE (INCOME)                                                2,643,744     4,467,381    3,203,483                           
                                                                 ------------------------------------------------------------------
                                                                                                                                   
COST OF GOODS SOLD                                                                                                                 
            Salaries & wages                                        1,123,331     1,143,869    1,071,850                           
            Less:  Salaries & wages capitalized in fixed assets                     (87,816)    (170,871)                          
            Benefits                                                  311,609       267,260      274,753                           
            Bad debt expense                                                                                                       
            Cost of goods sold                                                                                                     
            Decontamination & disposal                                 26,758        26,758       26,758                           
            Disposal costs-secondary wastes                           522,653       417,282      834,424                           
            Financing costs                                                                                                        
            Insurance                                                  83,183        83,183       75,058                           
            Legal services                                                                        45,265                           
            Materials                                                 562,465       999,505      578,194                           
            Office expense & supplies                                  51,520        11,113       85,942                           
            Other                                                       4,343         1,769        1,253                           
            Outside services                                          443,347       660,144      637,644                           
            Professional services                                     124,269      (121,092)                                       
            Rent-equipment                                             58,604        36,257       49,284                           
            Rent-office/buildings                                     (94,110)      136,063       87,598                           
            Supplies-processing                                                                                                    
            Taxes                                                      35,459        41,746       99,650                           
            Telephone                                                  17,319        32,054       55,441                           
            Transportation                                            132,244       152,740       77,421                           
            Travel & entertainment                                    110,575       123,532      136,127                           
            Utilities                                                  48,105        79,853       77,656                           
                                                                                                                                   
                                                                 ------------------------------------------------------------------
TOTAL COST OF GOODS SOLD                                            3,561,674     4,004,220    4,043,447             0           0 
                                                                 ------------------------------------------------------------------
                                                                                                                                   
INCOME BEFORE INTEREST, DEPRECIATION,                                                                                              
            TAXES, OR EXTRAORDINARY EXPENSES                         (917,930)      463,161     (839,964)            0           0 
                                                                 ------------------------------------------------------------------
                                                                                                                                   
INTEREST(INCOME) EXPENSE                                               71,976       129,416      133,029                           
DEPRECIATION AND AMORTIZATION                                       1,230,989     1,215,466    1,234,516                           
INCOME TAX EXPENSE (BENEFIT)                                                                                                       
REORGANIZATION EXPENSE                                                352,871       387,043      303,750                           
OTHER (INCOME) EXPENSE                                                                                                             
(GAIN) LOSS ON SALE OF ASSETS                                           3,966                                                      
                                                                 ------------------------------------------------------------------
                                                                                                                                   
NET INCOME (LOSS)                                                  (2,577,732)   (1,268,764)  (2,511,259)            0           0 
                                                                 ==================================================================
</TABLE>
<PAGE>   8
                     STATEMENT OF SOURCES AND USES OF CASH           FORM OPR-6


CASE NAME: MOLTEN METAL TECHNOLOGY, INC. 
(CONSOLIDATED)
CASE NUMBER:  97-21385-CJK

                                                            MONTH ENDED: 5/31/98

<TABLE>
<CAPTION>
                                                                                               TOTAL
                                                                    PRE          POST          MONTH        MONTH         MONTH     
                                                                  PETITION     PETITION        ENDED        ENDED         ENDED     
                                                                 12/1-12/2    12/3-12/31     12/31/97      1/31/98       2/28/98    
                                                                --------------------------------------------------------------------
<S>                                                             <C>           <C>            <C>           <C>           <C>
CASH FLOWS-OPERATING ACTIVITIES:

Net Earnings (Loss)                                                             (5,083,724)   (5,083,724)  (3,799,805)   (3,149,644)

Adjustments to Reconcile Net Earnings to
Net Cash Provided (Used) by Operating Activities:
            Depreciation & Amortization                                          1,096,271     1,096,271    1,217,312     1,217,312 
            Decrease (Increase)-Accounts Receivable                                 69,510        69,510    1,249,901      (424,891)
            Decrease (Increase)-Inventories                                      1,642,739     1,642,739       18,296        28,299 
            Decrease (Increase)-Prepaid Expenses                                  (488,182)     (488,182)    (157,770)     (321,617)
            Decrease (Increase)-Other Assets                                        13,597        13,597      (90,417)      (14,442)
            Increase (Decrease)-Pre Petition Liabilities                        (2,440,220)   (2,440,220)     476,653    (1,657,847)
            Increase (Decrease)-Post Petition Liabilities                        3,076,569     3,076,569     (609,932)    2,677,217 

                                                                --------------------------------------------------------------------
NET CASH PROVIDED (USED) BY OPERATING ACTIVITIES                           0    (2,113,440)   (2,113,440)  (1,895,762)   (1,645,613)
                                                                --------------------------------------------------------------------


CASH FLOWS USED IN INVESTING ACTIVITIES
            Capital Expenditures                                                   (96,499)      (96,499)    (329,756)     (441,187)
            Sale of Net Fixed Assets                                                                                                
                                                                --------------------------------------------------------------------
NET CASH PROVIDED (USED) IN INVESTING ACTIVITIES                           0       (96,499)      (96,499)    (329,756)     (441,187)
                                                                --------------------------------------------------------------------


CASH FLOWS FROM FINANCING ACTIVITIES:
            Increase (Decrease)-Morgens Waterfall                                5,260,000     5,260,000    1,740,000             0 
            Increase (Decrease)-Shareholder Valuations                               8,601         8,601       (4,772)        6,004 

            Purchase of Treasury Stock-Preferred Shares

                                                                --------------------------------------------------------------------
NET CASH PROVIDED (USED) IN FINANCING ACTIVITIES                           0     5,268,601     5,268,601    1,735,228         6,004 
                                                                --------------------------------------------------------------------


NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS                       0     3,058,662     3,058,662     (490,290)   (2,080,796)

Cash and Cash Equivalents at Beginning of Period                                 4,654,326     4,654,326    7,712,988     7,222,698 
                                                                --------------------------------------------------------------------


Cash and Cash Equivalents at End of Period                                 0     7,712,988     7,712,988    7,222,698     5,141,902 
                                                                ====================================================================
</TABLE>
<TABLE>
<CAPTION>
                                                                MONTH         MONTH         MONTH         MONTH       
                                                                ENDED         ENDED         ENDED         ENDED       
                                                               3/31/98       4/30/98       5/31/98                    
                                                            --------------------------------------------------------  
<S>                                                         <C>              <C>           <C>            <C>
CASH FLOWS-OPERATING ACTIVITIES:                                                                                      
                                                                                                                      
Net Earnings (Loss)                                            (2,577,732)   (1,268,764)   (2,511,259)                
                                                                                                                      
Adjustments to Reconcile Net Earnings to                                                                              
Net Cash Provided (Used) by Operating Activities:                                                                     
            Depreciation & Amortization                         1,230,989     1,215,466     1,246,691                 
            Decrease (Increase)-Accounts Receivable            (1,014,448)     (589,823)      207,760                 
            Decrease (Increase)-Inventories                      (299,222)      182,156      (262,546)                
            Decrease (Increase)-Prepaid Expenses                 (141,434)      254,680      (757,635)                
            Decrease (Increase)-Other Assets                     (351,297)            0             0                 
            Increase (Decrease)-Pre Petition Liabilities         (301,032)      754,545      (403,983)                
            Increase (Decrease)-Post Petition Liabilities         470,356      (185,309)      504,465                 
                                                                                                                      
                                                            --------------------------------------------------------  
NET CASH PROVIDED (USED) BY OPERATING ACTIVITIES               (2,983,820)      362,951    (1,976,507)            0   
                                                            --------------------------------------------------------  
                                                                                                                      
                                                                                                                      
CASH FLOWS USED IN INVESTING ACTIVITIES                                                                               
            Capital Expenditures                                 (451,118)   (1,226,414)     (976,221)                
            Sale of Net Fixed Assets                              (43,605)                                            
                                                            --------------------------------------------------------  
NET CASH PROVIDED (USED) IN INVESTING ACTIVITIES                 (494,723)   (1,226,414)     (976,221)            0   
                                                            --------------------------------------------------------  
                                                                                                                      
                                                                                                                      
CASH FLOWS FROM FINANCING ACTIVITIES:                                                                                 
            Increase (Decrease)-Morgens Waterfall                       0             0     2,300,000                 
            Increase (Decrease)-Shareholder Valuations             15,970         6,218         6,647                 
                                                                                                                      
            Purchase of Treasury Stock-Preferred Shares                                                               
                                                                                                                      
                                                            --------------------------------------------------------  
NET CASH PROVIDED (USED) IN FINANCING ACTIVITIES                   15,970         6,218     2,306,647             0   
                                                            --------------------------------------------------------  
                                                                                                                      
                                                                                                                      
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS           (3,462,573)     (857,245)     (646,081)            0   
                                                                                                                      
Cash and Cash Equivalents at Beginning of Period                5,141,902     1,679,329       822,084                 
                                                            --------------------------------------------------------  
                                                                                                                      
                                                                                                                      
Cash and Cash Equivalents at End of Period                      1,679,329       822,084       176,003             0   
                                                            ========================================================  
</TABLE>
<PAGE>   9
                                   CHAPTER 11                       ATTACHMENT 1
                            MONTHLY OPERATING REPORT
                        MONTHLY REPORTING QUESTIONNAIRE


CASE NAME: MOLTEN METAL TECHNOLOGY, INC. 
(CONSOLIDATED)
CASE NUMBER:  97-21385-CJK

                                                            MONTH ENDED: 5/31/98
                                                                          PAGE 1


1.   PAYROLL

State the amount of all executive wages paid and taxes withheld and paid.

<TABLE>
<CAPTION>
          Name and Title of                                                     Date                  Wages Paid                  
          Executive                                                             Paid           Gross              Net          
          ----------------------------------------------                --------------------  ---------------------------------
<S>                                                                     <C>                   <C>                 <C>       
          H. W. Arrowsmith, VP Nuclear Sales & Marketing                5/1, 5/15, & 5/29/98         37,962          25,071    
          Eugene Berman, VP, Regul, Legal, & Extern Aff                 5/1, 5/15, & 5/29/98         20,588          16,864    
          F. Gordon Bitter, CEO & CFO, Director                         5/1, 5/15, & 5/29/98         32,588          20,620    
          Steven Brien, VP, Chemical Sales & Marketing                  5/1, 5/15, & 5/29/98         18,462          10,664    
          Victor E. Gatto, Jr., VP, Government Markets                  5/1, 5/15, & 5/29/98         20,793          18,933    
          David Hoey, V,P Business Development                          5/1, 5/15, & 5/29/98         19,318          12,611    
          F. James Howie, III, VP, Procurement                          5/1, 5/15, & 5/29/98         16,217          10,321    
          Ethan E. Jacks, VP, General Counsel, Secretary                5/1, 5/15, & 5/29/98         19,898          11,827    
          James E. Johnston, VP, Technical Development                  5/1, 5/15, & 5/29/98         16,414          10,086    
          Randall Jones, Assistant Secretary                            5/1, 5/15, & 5/29/98         13,526           8,749    
          Christopher Nagel, Chief Technology Officer                   5/1, 5/15, & 5/29/98         19,879          12,210    
          Charles W. Shaver, President & COO, Director                  5/1, 5/15, & 5/29/98         30,280          19,235    

                                                                                              ---------------------------------

          TOTAL EXECUTIVE PAYROLL                                                                   265,925         177,191    
                                                                                              =================================
</TABLE>
<TABLE>
<CAPTION>
          Name and Title of                                                    Taxes Withheld                               
          Executive                                                    Due                      Paid               
          ----------------------------------------------         -----------------------------------------------   
<S>                                                              <C>                            <C>      
          H. W. Arrowsmith, VP Nuclear Sales & Marketing                     10,082                       10,082   
          Eugene Berman, VP, Regul, Legal, & Extern Aff                       1,403                        1,403   
          F. Gordon Bitter, CEO & CFO, Director                               9,895                        9,895   
          Steven Brien, VP, Chemical Sales & Marketing                        6,488                        6,488   
          Victor E. Gatto, Jr., VP, Government Markets                        1,115                        1,115   
          David Hoey, V,P Business Development                                5,421                        5,421   
          F. James Howie, III, VP, Procurement                                4,299                        4,299   
          Ethan E. Jacks, VP, General Counsel, Secretary                      5,675                        5,675   
          James E. Johnston, VP, Technical Development                        3,843                        3,843   
          Randall Jones, Assistant Secretary                                  2,640                        2,640   
          Christopher Nagel, Chief Technology Officer                         4,992                        4,992   
          Charles W. Shaver, President & COO, Director                        7,820                        7,820   
                                                                                                                   
                                                                 ------------------------------------------------  
                                                                                                                   
          TOTAL EXECUTIVE PAYROLL                                            63,673                       63,673   
                                                                 ================================================  
</TABLE>

2.  INSURANCE
          Is Workers' Compensation and other insurance in effect?     Yes

          Are payments current?                                       Yes

          If any policy has lapsed, been replaced or renewed, state so in the
          schedule below. Attach a copy of the new policy's binder or coverage
          page.

<TABLE>
<CAPTION>
                                                                                              DATE
                                   COVERAGE       POLICY         EXPIRATION     PREMIUM     COVERAGE
          CARRIER NAME              AMOUNT        NUMBER            DATE         AMOUNT     PAID THRU
- ------------------------------------------------------------------------------------------------------
<S>                                <C>            <C>            <C>            <C>         <C>
</TABLE>

          SEE ATTACHED INSURANCE EXPIRATION CERTIFICATE
          ---------------------------------------------
<PAGE>   10
                                   CHAPTER 11                       ATTACHMENT 1
                            MONTHLY OPERATING REPORT
                        MONTHLY REPORTING QUESTIONNAIRE


CASE NAME: MOLTEN METAL TECHNOLOGY, INC. 
(CONSOLIDATED)
CASE NUMBER:  97-21385-CJK

                                                            MONTH ENDED: 5/31/98
                                                                          PAGE 2




3.  BANK ACCOUNTS

<TABLE>
<CAPTION>

                                              MMT           MMT             MMT         TENNESSEE      TENNESSEE      TENNESSEE    
                                           OPERATING      PAYROLL         PAYROLL       OPERATING       PAYROLL        PAYROLL     
                                         ------------------------------------------------------------------------------------------
<S>                                       <C>            <C>            <C>             <C>           <C>            <C>
BANK NAME                                 U.S. TRUST     U.S. TRUST     NATIONSBANK     U.S. TRUST    U.S. TRUST     NATIONSBANK   

ACCOUNT NUMBER                            1100937836     1100937844     3001270655      110937851     1100937869     3001270846    


BEGINNING BOOK BALANCE                        (513,535)             0          (2,382)     1,175,210             0          28,036 

PLUS:        Deposits-Collections of A/R        94,507                                     2,395,820                               
             Other Receipts                     67,488                                                                             
             Loan Advances                   2,300,000                                                                             
                                                                                                                                   
LESS:        Disbursements                  (4,694,593)                                         (600)                              
             Payroll                                                         (648,615)                                    (418,675)
             Returned Checks                                                                                                       
             Loan Repayments                                                                                                       
                                                                                                                                   
OTHER:       Adjustments                      (178,107)                                      178,107                               
             Transfers In (Out)              2,501,182                        670,000     (3,190,000)                      420,000 
                                                                                                                                   
                                         ------------------------------------------------------------------------------------------

ENDING BOOK BALANCE                           (423,058)             0          19,003        558,537             0          29,361 
                                         ==========================================================================================
</TABLE>
<TABLE>
<CAPTION>
                                              ALEX          OPPEN-         M4 LP        ESCROW AT      MMT FED                    
                                              BROWN         HEIMER       OPERATING        ROPES        HOLDINGS        TOTAL      
                                          ----------------------------------------------------------------------------------------
<S>                                       <C>             <C>            <C>            <C>          <C>               <C>
                                              ALEX          OPPEN-                       ROPES &                                  
BANK NAME                                     BROWN         HEIMER        SUNTRUST        GRAY        U.S. TRUST                  
                                                                                                                                  
ACCOUNT NUMBER                              210-71007     033-82238      0005618983                  002239244-1                  
                                                                                                                                  
                                                                                                                                  
BEGINNING BOOK BALANCE                            6,543        136,006         (8,294)            0            500        822,084 
                                                                                                                                  
PLUS:        Deposits-Collections of A/R                                                                                2,490,327 
             Other Receipts                       6,647        251,986                                                    326,121 
             Loan Advances                                                                                              2,300,000 
                                                                                                                                0 
LESS:        Disbursements                                                                                             (4,695,193)
             Payroll                                                                                                   (1,067,290)
             Returned Checks                                                                                                    0 
             Loan Repayments                                                                                                    0 
                                                                                                                                0 
OTHER:       Adjustments                                                                                                        0 
             Transfers In (Out)                 (13,190)      (387,992)                                                         0 
                                                                                                                                0 
                                          ----------------------------------------------------------------------------------------
                                                                                                                                  
ENDING BOOK BALANCE                                   0              0         (8,294)            0            500        176,049 
                                          ========================================================================================
                                                                                                                                  
                                                                                                                                0 
</TABLE>

4.  POST PETITION PAYMENTS TO PROFESSIONALS AND ON PRE PETITION DEBTS
             List any post petition payments to professional and payments on
             Pre-petition debts in the schedule below.
<TABLE>
<CAPTION>
             Payments To/On                                               Amount           Date         Check #
             ----------------------------                             ---------------------------------------------
<S>                                                                   <C>                <C>            <C>
             Professionals (attorneys,
             accountants, etc.):

             The Blackstone Group                                             133,418    5/11/98         41931


                                                                      ================
                                                                              133,418
                                                                      ================

             PRE-PETITION DEBTS                                                  NONE


                                                                      ================
             TOTAL PAYMENTS OF PRE-PETITION DEBTS                                   0
                                                                      ================
</TABLE>
<PAGE>   11
                         INSURANCE EXPIRATION STATEMENT                EXHIBIT D



<TABLE>
<CAPTION>
                                               INSURANCE      COVERAGE     POLICY     EXPIRATION     PREMIUM     COVERAGE
CARRIER NAME AND ADDRESS              TYPE       AGENT         AMOUNT      NUMBER        DATE         AMOUNT     PAID THRU
- --------------------------------------------------------------------------------------------------------------------------
<S>                                   <C>      <C>            <C>          <C>        <C>            <C>         <C>


                SEE ATTACHED
</TABLE>



                I declare under penalty of perjury that the information provided
                on the attachments hereto is true and correct to the best of my
                knowledge and belief.


                Date:   5/26/98
                      -----------

                                        Molten Metal Technology, Inc.
                                        
                                        
                                        By:   /s/ F. Gordon Bitter
                                              --------------------------
                                              F. Gordon Bitter
                                              Chief Executive Officer
                                        
                                        MMT of Tennessee, Inc.
                                        
                                        
                                        By:   /s/ F. Gordon Bitter
                                              --------------------------
                                              F. Gordon Bitter
                                              Vice President
                                        
                                        M4 Environmental, L.P..
                                        
                                        
                                        By:   /s/ F. Gordon Bitter
                                              --------------------------
                                              M4 Environmental Management, Inc.
                                              General Partner
                                        
                                        By:   /s/ F. Gordon Bitter
                                              --------------------------
                                              F. Gordon Bitter
                                              Vice President
                                        
                                        MMT Federal Holdings, Inc.
                                        
                                        
                                        By:   /s/ F. Gordon Bitter
                                              --------------------------
                                              F. Gordon Bitter
                                              Vice President
<PAGE>   12
                   MOLTEN METAL TECHNOLOGY INSURANCE SCHEDULE
                                   EXHIBIT A

<TABLE>
<CAPTION>
============================================================================================================================
        CARRIER NAME & ADDRESS                            TYPE                      BROKER        LIMITS        POLICY      
                                                                                                                NUMBER      
============================================================================================================================
<S>                                     <C>                                       <C>         <C>             <C>
Commerce & Industry Insurance Co.       General Liability                         Aon             $1,000,000    340-94-76    
70 Pine Street                          Automobile Liability                      Aon             $1,000,000    766-56-11    
New York, NY   10270                    Excess Liability - 1st layer              Aon            $20,000,000    606-23-31    
                                                                                              excess of $1M   
                                                                                                              
New Hampshire Insurance Co.             Workers Compensation                      Aon           Statutory      WC588-59-75   
70 Pine Street                          Workers Compensation - CA                 Aon           Statutory      WC588-59-77   
New York NY  10270                      Employers' Liability                      Aon             $1,000,000   WC588-59-75   
                                                                                                               and -77[CA]
                                                                                                              
American International Specialty Lines  Pollution Liability - MA/TN               Aon             $3,000,000     8199951     
   Insurance Co.                        Pollution Liability - TX                  Aon             $1,000,000     8199950     
70 Pine Street                                                                                                
New York NY  10270                                                                                            
                                                                                                              
                                                                                                              
Executive Risk Indemnity Company        Fidelity                                  Aon               $500,000  751-118812-98  
P.O. Box 91394                          Fiduciary                                 Aon             $2,000,000  751-118834-98  
Chicago, IL   60693                                                                                           
                                                                                                              
Executive Risk Indemnity Company        Directors & Officers Liability            Aon            $10,000,000  751-091628-98  
P.O. Box 91394                                                                                                
Chicago, IL   60693                                                                                           
                                                                                                              
CNA Insurance Companies                 Foreign Liability                         Aon             $1,000,000  PST 00 9648288 
180 Maiden Lane                                                                                               
New York, NY  10038                                                                                           
                                                                                                              
Allendale Mutual Insurance Co.          Property                                  Aon           $147,000,000      CC626      
Allendale Park                                                                                   Blanket      
Johnston, RI  02919                                                                                           
                                                                                                              
American Nuclear Insurers               Nuclear All Risk Property                 J&H/M&M        $45,000,000      98262      
Town Center                             Nuclear Liability Facility Form - TN      J&H/M&M        $50,000,000     NF-0338     
29 South Main Street                    Master Worker Certificate - TN            J&H/M&M       $200,000,000     NW-0235     
West Hartford, CT 06107                                                                        Shared Agg.    
</TABLE>     
<TABLE>      
<CAPTION>    
========================================================================================                         
        CARRIER NAME & ADDRESS          EXPIRATION    PREMIUM             PAID                                   
                                           DATE                           THRU                                   
========================================================================================                         
<S>                                     <C>          <C>            <C>                                          
Commerce & Industry Insurance Co.        12/3/98         $53,000        Current                                  
70 Pine Street                           12/3/98          $3,540        Current                                  
New York, NY   10270                     12/3/98         $43,185        Current                                  
                                                                                                                 
                                                                                                                 
New Hampshire Insurance Co.              12/3/98        $111,250        Current                                  
70 Pine Street                           12/3/98            $753        Current                                  
New York NY  10270                       12/3/98       inclu.           Current                                  
                                                                                                                 
                                                                                                                 
American International Specialty Lines   12/3/98         $28,342        Current                                  
   Insurance Co.                         12/3/98         $16,919        Current                                  
70 Pine Street                                                                                                   
New York NY  10270                                                                                               
                                                                                                                 
                                                                                                                 
Executive Risk Indemnity Company          5/9/99          $6,000        Current                                  
P.O. Box 91394                            5/9/99          $6,000        Current                                  
Chicago, IL   60693                                                                                              
                                                                                                                 
Executive Risk Indemnity Company         1/19/99        $350,000        Current                                  
P.O. Box 91394                                                                                                   
Chicago, IL   60693                                                                                              
                                                                                                                 
CNA Insurance Companies                   2/1/99          $2,000        Current                                  
180 Maiden Lane                                                                                                  
New York, NY  10038                                                                                              
                                                                                                                 
Allendale Mutual Insurance Co.           12/2/99        $170,000        Current                                  
Allendale Park                                                                                                   
Johnston, RI  02919                                                                                              
                                                                                                                 
American Nuclear Insurers                 1/1/99         $97,500        Current                                  
Town Center                              12/31/98       $124,215        Current                                  
29 South Main Street                     12/31/98           $550    Not yet invoiced                             
West Hartford, CT 06107                                                                                          
</TABLE>



                                     Page 13
<PAGE>   13
                   MOLTEN METAL TECHNOLOGY INSURANCE SCHEDULE
                                   EXHIBIT A
<TABLE>
<CAPTION>
============================================================================================================================
        CARRIER NAME & ADDRESS                            TYPE                      BROKER        LIMITS        POLICY      
                                                                                                                NUMBER      
============================================================================================================================
<S>                                     <C>                                       <C>         <C>              <C>
                                        Nuclear Supplier's & Transp.              J&H/M&M        $15,000,000    NS-0539    
                                        Nuclear Liability Facility Form - SC      J&H/M&M        $10,000,000    NF-0329    
                                        Nuclear Foreign Supplier's & Transp.      J&H/M&M        $10,000,000      TBD      
                                        Master Worker Certificate - SC            J&H/M&M       $200,000,000    NW-0237    
                                                                                               Shared Agg.
                                        Nuclear Facility Liability - Comm. Park   J&H/M&M        $10,000,000    NF-0337    
                                        Master Worker Certificate - Comm. Park    J&H/M&M       $200,000,000    NW-0234    
                                                                                               Shared Agg.

American International Specialty        Pollution Legal and Closure/Post Closure  J&H/M&M         $3,000,000    8183013    
   Lines Ins. Co.                                                                             Pollution Legal              
Harborside Financial Center                                                                       $3,400,000               
401 Plaza 3                                                                                   Closure                      
Jersey City, NJ   07311
</TABLE>                   
<TABLE>                    
<CAPTION>                  
==========================================================================================                         
        CARRIER NAME & ADDRESS          EXPIRATION    PREMIUM               PAID                                   
                                           DATE                             THRU                                   
==========================================================================================                         
<S>                                     <C>          <C>            <C>                                          
                                          12/31/98         $8,670          Current          
                                          12/31/98        $13,590          Current          
                                          12/31/98       TBD        Based on Foreign Sales  
                                          12/31/98           $550      Not yet invoiced     
                                                                                          
                                          12/31/98        $39,568          Current          
                                          12/31/98           $550      Not yet invoiced     
                                                                                          
                                                                                          
American International Specialty          10/15/00        $94,400          Current          
   Lines Ins. Co.                       Poll. Legal                                       
Harborside Financial Center               12/7/00        $425,000          Current          
401 Plaza 3                               Closure                                         
Jersey City, NJ   07311                 
</TABLE>


Note: The premium for the Pollution Legal/Closure policy (AISLIC no. 8183013) is
billed in 5 annual installments of $19,280 (Pollution Legal) and $85,000
(Closure). To date, the first three installments are paid in full. The remaining
installments come due on the anniversary date. Thus, the remaining installments
for 12/15/98 and 1999 for Pollution and for 1/4/99 and 2000 for Closure, are
unbilled and unpaid.


                                    Page 14
<PAGE>   14
                   MOLTEN METAL TECHNOLOGY INSURANCE SCHEDULE
                                   EXHIBIT A

<TABLE>
<CAPTION>
=========================================================================================================================
        CARRIER NAME & ADDRESS                            TYPE                       CO          LIMITS      EXPIRATION 
                                                                                   ENTITY                       DATE    
=========================================================================================================================
<S>                                     <C>                                      <C>             <C>         <C>
Blue Cross & Blue Shield of RI          Full Coverage Medical                    MMT                         5/1-5/31/98
PO Box 1057
Providence, RI
02901-1057

Delta Dental Plan                       Self Funded Dental                       MMT                         5/1-5/31/98
PO Box 5-0198                                                                                                           
Woburn, MA 01815-0198                                                                                                   


Fortis Benefits Insurance Co.           Employee Funded-Supplemental Life        MMT                         5/1-5/31/98
PO Box 27-644-1
Kansas City, MO 64180-0644


Fortis Benefits Insurance Co.           Employee Funded-Supplemental Life        MMT TN                      5/1-5/31/98
PO Box 27-644-1
Kansas City, MO 64180-0644


Fortis Self Funded Admin Services       Medical Stop Loss and Life Insurance     MMT                         5/1-5/31/98
10159 Wayzata Boulevard                 Premiums
Minnetonka, MN 55305


Fortis Self Funded Admin Services       Medical Stop Loss and Life Insurance     MMT TN                      5/1-5/31/98
10159 Wayzata Boulevard                 Premiums
Minnetonka, MN 55305


Fortis Self Funded Admin Services       Self Funded Medical Claims               MMT &                       5/1-5/31/98
10159 Wayzata Boulevard                                                          MMT TN
Minnetonka, MN 55305


UNUM Life Insurance                     Employee Funded Long Term Disability     MMT                         5/1-5/31/98
</TABLE>
<TABLE>
<CAPTION>
============================================================================
        CARRIER NAME & ADDRESS              PREMIUM            PAID         
                                                               THRU         
============================================================================
<S>                                         <C>               <C>           
Blue Cross & Blue Shield of RI                 $10,622        Current       
PO Box 1057                                                                 
Providence, RI                                                              
02901-1057                                                                  
                                                                            
Delta Dental Plan                                 None        Current       
PO Box 5-0198                                                 Current       
Woburn, MA 01815-0198                                         Current       
                                                                            
                                                                            
Fortis Benefits Insurance Co.                   $1,968        Current       
PO Box 27-644-1                                                             
Kansas City, MO 64180-0644                                                  
                                                                            
                                                                            
Fortis Benefits Insurance Co.                   $1,185        Current       
PO Box 27-644-1                                                             
Kansas City, MO 64180-0644                                                  
                                                                            
                                                                            
Fortis Self Funded Admin Services              $10,960        Current       
10159 Wayzata Boulevard                                                     
Minnetonka, MN 55305                                                        
                                                                            
                                                                            
Fortis Self Funded Admin Services               $8,231        Current       
10159 Wayzata Boulevard                                                     
Minnetonka, MN 55305                                                        
                                                                            
                                                                            
Fortis Self Funded Admin Services              $50,000        Current       
10159 Wayzata Boulevard                                                     
Minnetonka, MN 55305                                                        
                                                                            
                                                                            
UNUM Life Insurance                             $1,951        Current       
</TABLE>


                                 Page 15 of 16
<PAGE>   15
                   MOLTEN METAL TECHNOLOGY INSURANCE SCHEDULE
                                   EXHIBIT A

<TABLE>
<CAPTION>
=========================================================================================================================
        CARRIER NAME & ADDRESS                            TYPE                       CO          LIMITS      EXPIRATION 
                                                                                   ENTITY                       DATE    
=========================================================================================================================
<S>                                     <C>                                      <C>             <C>         <C>         
PO Box 7777-W0050
Philadelphia, PA
19175-0050


UNUM Life Insurance                     Short Term Disability                    MMT                         5/1-5/31/98 
2211 Congress Street
Portland, ME 04122
</TABLE>
<TABLE>
<CAPTION>
============================================================================
        CARRIER NAME & ADDRESS              PREMIUM            PAID         
                                                               THRU         
============================================================================
<S>                                         <C>               <C>           
PO Box 7777-W0050                                                       
Philadelphia, PA                                                        
19175-0050                                                              
                                                                        
                                                                        
UNUM Life Insurance                           $2,110        Current    
2211 Congress Street                     
Portland, ME 04122                      
</TABLE>


                                 Page 16 of 16

<PAGE>   1
                                                                    Exhibit 99.2

                         UNITED STATES BANKRUPTCY COURT
                            DISTRICT OF MASSACHUSETTS
                                EASTERN DIVISION



IN RE:      MOLTEN METAL TECHNOLOGY, INC.               CASE NO.:  97-21385-CJK
              DEBTOR                                   JUDGE:   CAROL J. KENNER

                                                                      CHAPTER 11
MONTHLY OPERATING REPORT FOR MONTH ENDING:                            5/31/98


COMES NOW, MOLTEN METAL TECHNOLOGY, INC. , Debtor in Possession, and hereby its
Monthly Operating Report for the period commencing 5/1/98 and ending 5/31/98 as
shown by the report and exhibits consisting of 10 pages and containing the
following, as indicated:

         X        Monthly Reporting Questionnaire (Attachment 1)

         X        Comparative Balance Sheets (Forms OPR-1 and OPR-2)

         X        Summary of Accounts Receivable (Form OPR-3)

         X        Schedule of Post-Petition Liabilities (Form OPR-4)

         X        Income Statement (Form OPR-5)

         X        Statement of Sources and Uses of Cash (Form OPR-6)


I declare under penalty of perjury that this report and all attachments are true
and correct to the best of my knowledge and belief.


Date:          6/26/98           DEBTOR-IN-POSSESSION
                                 By:              /s/ F. Gordon Bitter
                                                  -----------------------------
                                 Name & Title:    F. Gordon Bitter, CEO & CFO
                                                  Molten Metal Technology, Inc.
                                                  421 Currant Road
                                                  Fall River, MA  02720
                                                  Telephone:    508-324-6497
<PAGE>   2
                         UNITED STATES BANKRUPTCY COURT
                       EASTERN DISTRICT OF MASSACHUSETTS


IN RE:      MOLTEN METAL TECHNOLOGY, INC.               CASE NO.:  97-21385-CJK
              DEBTOR                                   JUDGE:   CAROL J. KENNER

                                                                      CHAPTER 11


                     NOTE TO THE MONTHLY OPERATING REPORT:


         Consistent with the Debtor's historical accounting practices, this
         operating report accounts for all cash transfers among the Debtor and
         its affiliates and allocates some, but not all, of the expenses borne
         by one affiliate for the benefit of another or the others. In the
         absence of a decision for substantive consolidation, the Debtor will
         develop an appropriate allocation of expenses among the affiliated
         entities.

<PAGE>   3
                           COMPARATIVE BALANCE SHEETS                 FORM OPR-1

CASE NAME: MOLTEN METAL TECHNOLOGY, INC.
CASE NUMBER:  97-21385-CJK

                                                            MONTH ENDED: 5/31/98
<TABLE>
<CAPTION>
                                                                 FILING         MONTH         MONTH         MONTH         MONTH    
                                                                  DATE          ENDED         ENDED         ENDED         ENDED    
                                                                12/3/97       12/31/97       1/31/98       2/28/98       3/31/98   
                                                             ----------------------------------------------------------------------
<S>                                                          <C>              <C>           <C>           <C>           <C>
ASSETS

CURRENT ASSETS

Cash                                                              4,893,869     6,713,407     4,953,236     4,072,063       474,472
Other negotiable instruments (i.e. CD's,
            Treasury Bills, Etc.)
Accounts Receivable-Trade, Net (OPR-3)                            1,094,993       891,484       451,441       392,839       830,839
Less:   allowance for doubtful accounts
Accounts Receivable-Other                                           336,181       662,994       673,987       633,723       627,686
Accounts Receivable-Intercompany
Inventory, at cost                                                3,032,515     1,832,965     1,832,965     1,832,965     1,832,965
Prepaid expenses                                                  2,994,736     3,276,848     3,447,882     3,783,158     3,998,312
Deposits                                                            141,546       119,455       181,446       185,611       246,394
Other:
            Investment in Nichimen Joint Venture                    433,739       433,739       433,739       433,739       433,739
            Investment in MMT of Tennessee                               10            10            10            10            10
            Investment in MMT Federal Holdings                        1,000         1,000         1,000         1,000         1,000
            Long Term Notes Receivable                            1,806,950     1,806,950     1,806,950     1,806,950     1,806,950
            Restricted Cash Collateral Deposits                   3,706,433     3,715,479     3,724,480     3,732,562     4,020,750


                                                             ----------------------------------------------------------------------
TOTAL CURRENT ASSETS                                             18,441,972    19,454,331    17,507,136    16,874,620    14,273,117
                                                             ----------------------------------------------------------------------

PROPERTY, PLANT AND EQUIPMENT, AT COST                           86,181,337    86,206,483    86,347,343    86,409,258    86,482,544
Less:  Accumulated Depreciation                                 (21,105,234)  (21,693,189)  (22,282,884)  (22,872,579)  (23,421,627)

                                                             ----------------------------------------------------------------------
NET PROPERTY, PLANT AND EQUIPMENT                                65,076,103    64,513,294    64,064,459    63,536,679    63,060,917
                                                             ----------------------------------------------------------------------

OTHER ASSETS (ITEMIZED IF VALUE EXCEEDS
            10% OF "TOTAL ASSETS")
            Intangible Assets                                    11,221,338    11,220,787    11,245,697    11,266,969    11,476,242
            Less:  Accumulated Amortization                      (1,765,428)   (1,783,197)   (1,801,012)   (1,818,825)   (1,839,916)

                                                             ----------------------------------------------------------------------
TOTAL OTHER ASSETS                                                9,455,910     9,437,590     9,444,685     9,448,144     9,636,326
                                                             ----------------------------------------------------------------------

TOTAL ASSETS                                                     92,973,985    93,405,215    91,016,280    89,859,443    86,970,360
                                                             ======================================================================
</TABLE>
<TABLE>
<CAPTION>
                                                                  MONTH         MONTH         MONTH               
                                                                  ENDED         ENDED         ENDED               
                                                                 4/30/98       5/31/98                            
                                                             --------------------------------------------         
<S>                                                          <C>              <C>             <C>
ASSETS                                                                                                            
                                                                                                                  
CURRENT ASSETS                                                                                                    
                                                                                                                  
Cash                                                               (373,368)     (404,055)                        
Other negotiable instruments (i.e. CD's,                                                                         
            Treasury Bills, Etc.)                                                                                 
Accounts Receivable-Trade, Net (OPR-3)                              277,703       226,397                         
Less:   allowance for doubtful accounts                                                                           
Accounts Receivable-Other                                           497,002       700,005                         
Accounts Receivable-Intercompany                                                                                  
Inventory, at cost                                                1,832,965     1,832,965                         
Prepaid expenses                                                  4,517,384     3,669,726                         
Deposits                                                            246,394       246,394                         
Other:                                                                                                            
            Investment in Nichimen Joint Venture                    433,739       433,739                         
            Investment in MMT of Tennessee                               10            10                         
            Investment in MMT Federal Holdings                        1,000         1,000                         
            Long Term Notes Receivable                            1,806,950     1,806,950                         
            Restricted Cash Collateral Deposits                   4,020,750     4,020,750                         
                                                                                                                  
                                                                                                                  
                                                             --------------------------------------------         
TOTAL CURRENT ASSETS                                             13,260,529    12,533,881              0          
                                                             --------------------------------------------         
                                                                                                                  
PROPERTY, PLANT AND EQUIPMENT, AT COST                           86,522,002    87,221,428                         
Less:  Accumulated Depreciation                                 (23,994,609)  (24,567,381)                        
                                                                                                                  
                                                             --------------------------------------------         
NET PROPERTY, PLANT AND EQUIPMENT                                62,527,393    62,654,047              0          
                                                             --------------------------------------------         
                                                                                                                  
OTHER ASSETS (ITEMIZED IF VALUE EXCEEDS                                                                           
            10% OF "TOTAL ASSETS")                                                                                
            Intangible Assets                                    11,565,648    11,641,734                         
            Less:  Accumulated Amortization                      (1,872,238)   (1,911,432)                        
                                                                                                                  
                                                             --------------------------------------------         
TOTAL OTHER ASSETS                                                9,693,410     9,730,302              0          
                                                             --------------------------------------------         
                                                                                                                  
TOTAL ASSETS                                                     85,481,332    84,918,230              0          
                                                             ============================================         
</TABLE>
<PAGE>   4
                           COMPARATIVE BALANCE SHEETS                 FORM OPR-2

CASE NAME: MOLTEN METAL TECHNOLOGY, INC.
CASE NUMBER:  97-21385-CJK

                                                            MONTH ENDED: 5/31/98
<TABLE>
<CAPTION>
                                                               FILING          MONTH           MONTH           MONTH      
                                                                DATE           ENDED           ENDED           ENDED      
                                                               12/3/97        12/31/97        1/31/98         2/28/98     
                                                           ---------------------------------------------------------------
<S>                                                        <C>               <C>             <C>             <C> 
LIABILITIES

POST PETITION LIABILITIES

Secured Debt (See Form OPR-4)                                                   5,260,000       9,300,000       7,000,000 
Unsecured Debt-Intercompany Obligations due to cash
             transfers in Post Petition Operations                             (1,183,624)     (2,201,140)     (1,829,262)
Unsecured Debt-Obligations incurred in Post Petition
             Operations (See Form OPR-4)                                        3,076,569       1,960,397       2,092,200 

                                                           ---------------------------------------------------------------
TOTAL POST PETITION LIABILITIES                                          0      7,152,945       9,059,257       7,262,938 

PRE PETITION INTERCOMPANY LIABILITIES                         (126,615,241)  (126,615,241)   (126,615,241)   (126,615,241)
DEFERRED REVENUE/DEFERRED INCOME                                11,151,728      9,342,638       9,165,259       9,144,426 
TOTAL OTHER PRE PETITION LIABILITIES                           198,513,032    198,221,086     196,932,030     199,566,949 
                                                           ---------------------------------------------------------------

TOTAL LIABILITIES                                               83,049,519     88,101,428      88,541,305      89,359,072 
                                                           ---------------------------------------------------------------

SHAREHOLDERS' EQUITY (DEFICIT)

Preferred Stock                                                 15,874,471     16,793,713      17,319,518      17,845,322 
Common Stock                                                       237,810        237,810         237,810         237,810 
Paid in Capital                                                170,893,690    170,893,690     170,893,690     170,893,690 
Valuation Allowance                                                  9,683         11,636             217           9,323 
Dividends Paid                                                  (4,343,230)    (5,262,472)     (5,788,277)     (6,314,081)
Treasury Stock                                                  (1,251,319)    (1,251,319)     (1,251,319)     (1,251,319)
Deferred Compensation                                             (127,137)      (120,489)       (113,842)       (107,838)
Retained Earnings                                                                                                         
             Through Filing Date                              (171,369,502)  (171,362,447)   (171,362,447)   (171,362,447)
             Post Filing Date                                                  (4,636,335)     (7,460,375)     (9,450,089)

                                                           ---------------------------------------------------------------
TOTAL SHAREHOLDERS' EQUITY (DEFICIT)                             9,924,466      5,303,787       2,474,975         500,371 
                                                           ---------------------------------------------------------------

TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY                      92,973,985     93,405,215      91,016,280      89,859,443 
                                                           ===============================================================
</TABLE>
<TABLE>
<CAPTION>
                                                            MONTH          MONTH           MONTH           MONTH         
                                                            ENDED          ENDED           ENDED           ENDED         
                                                           3/31/98        4/30/98         5/31/98                        
                                                       ---------------------------------------------------------------   
<S>                                                    <C>               <C>             <C>               <C>
LIABILITIES                                                                                                              
                                                                                                                         
POST PETITION LIABILITIES                                                                                                
                                                                                                                         
Secured Debt (See Form OPR-4)                                7,000,000      7,000,000       9,300,000                    
Unsecured Debt-Intercompany Obligations due to cash                                                                      
             transfers in Post Petition Operations          (3,038,101)    (4,245,999)     (5,806,354)                   
Unsecured Debt-Obligations incurred in Post Petition                                                                     
             Operations (See Form OPR-4)                     2,468,346      2,164,943       2,975,597                    
                                                                                                                         
                                                       ---------------------------------------------------------------   
TOTAL POST PETITION LIABILITIES                              6,430,245      4,918,944       6,469,243               0    
                                                                                                                         
PRE PETITION INTERCOMPANY LIABILITIES                     (126,615,241)  (126,615,241)   (126,615,241)                   
DEFERRED REVENUE/DEFERRED INCOME                             9,123,593      8,888,307       8,805,851                    
TOTAL OTHER PRE PETITION LIABILITIES                       199,295,786    200,075,660     200,292,269                    
                                                       ---------------------------------------------------------------   
                                                                                                                         
TOTAL LIABILITIES                                           88,234,383     87,267,670      88,952,122               0    
                                                       ---------------------------------------------------------------   
                                                                                                                         
SHAREHOLDERS' EQUITY (DEFICIT)                                                                                           
                                                                                                                         
Preferred Stock                                             18,371,126     18,011,989      17,652,851                    
Common Stock                                                   237,810        237,810         237,810                    
Paid in Capital                                            170,893,690    170,893,690     170,893,690                    
Valuation Allowance                                              9,323          9,323           9,323                    
Dividends Paid                                              (6,839,885)    (6,480,748)     (6,121,610)                   
Treasury Stock                                              (1,251,319)    (1,251,319)     (1,251,319)                   
Deferred Compensation                                         (101,191)       (94,758)        (88,111)                   
Retained Earnings                                                                                   0                    
             Through Filing Date                          (171,362,447)  (171,362,447)   (171,362,447)                   
             Post Filing Date                              (11,221,130)   (11,749,878)    (14,004,079)                   
                                                                                                                         
                                                       ---------------------------------------------------------------   
TOTAL SHAREHOLDERS' EQUITY (DEFICIT)                        (1,264,023)    (1,786,338)     (4,033,892)              0    
                                                       ---------------------------------------------------------------   
                                                                                                                         
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY                  86,970,360     85,481,332      84,918,230               0    
                                                       ===============================================================   
</TABLE>
<PAGE>   5
                         SUMMARY OF ACCOUNTS RECEIVABLE              FORM OPR-3

CASE NAME: MOLTEN METAL TECHNOLOGY, INC.
CASE NUMBER:  97-21385-CJK

                                                            MONTH ENDED: 5/31/98

<TABLE>
<CAPTION>
                                                                       0-30         31-60         61-90         OVER
                                                         TOTAL         DAYS          DAYS         DAYS         90 DAYS
                                                   -----------------------------------------------------------------------
<S>                                                <C>                <C>           <C>           <C>          <C>    
DATE OF FILING:   12/3/97                                1,094,993       818,022       66,192        42,053       168,726
                  Allowance for doubtful accounts         (150,000)                                              (150,000)
                                                      --------------------------------------------------------------------
                                                           944,993       818,022       66,192        42,053        18,726
                                                      ====================================================================

MONTH:            12/31/97                                 891,484             8      680,697             0       210,779
                  Allowance for doubtful accounts                0
                                                      --------------------------------------------------------------------
                                                           891,484             8      680,697             0       210,779
                                                      ====================================================================

MONTH:            1/31/98                                  451,441             0            9       240,654       210,778
                  Allowance for doubtful accounts                0
                                                      --------------------------------------------------------------------
                                                           451,441             0            9       240,654       210,778
                                                      ====================================================================

MONTH:            2/28/98                                  392,839             0      (58,602)            8       451,433
                  Allowance for doubtful accounts                0
                                                      --------------------------------------------------------------------
                                                           392,839             0      (58,602)            8       451,433
                                                      ====================================================================

MONTH:            3/31/98                                  830,839       438,009                    (58,602)      451,432
                  Allowance for doubtful accounts                0
                                                      --------------------------------------------------------------------
                                                           830,839       438,009            0       (58,602)      451,432
                                                      ====================================================================

MONTH:            4/30/98                                  277,703        67,500                                  210,203
                  Allowance for doubtful accounts                0
                                                      --------------------------------------------------------------------
                                                           277,703        67,500            0             0       210,203
                                                      ====================================================================

MONTH:            5/31/98                                  226,397        48,754           12                     177,631
                  Allowance for doubtful accounts
                                                      --------------------------------------------------------------------
                                                           226,397        48,754           12             0       177,631
                                                      ====================================================================
</TABLE>
<PAGE>   6
                      SCHEDULE OF POST PETITION LIABILITIES           FORM OPR-4

CASE NAME: MOLTEN METAL TECHNOLOGY, INC.
CASE NUMBER:  97-21385-CJK

                                                            MONTH ENDED: 5/31/98

<TABLE>
<CAPTION>
                                                                                            DATE           DATE         TOTAL    
                                                                                          INCURRED         DUE           DUE     
                                                                                      -------------------------------------------
<S>                                                                                   <C>                <C>        <C>
TAXES PAYABLE                                                                         
                                                                                      
            Federal Income Taxes                                                                                             NONE
            FICA-Employer's Share                                                                                            NONE
            FICA-Employee's Share                                                                                            NONE
            Unemployment Tax                                                                                                 NONE
            State Sales & Use Tax                                                                                            NONE
            State __________ Tax                                                                                             NONE
            Personal Property Tax                                                                                            NONE
                                                                                      
                                                                                                                    -------------
TOTAL TAXES PAYABLE                                                                                                             0
                                                                                                                    -------------
                                                                                      
POST PETITION SECURED DEBT                                                            
DIP FINANCING                                                                         
            Post petition advances-Morgens Waterfall Financing                        3/20/98-5/31/98    12/31/99       9,300,000
                                                                                      
ACCRUED INTEREST PAYABLE                                                              
            Post petition interest on Morgens Waterfall Financing
                                                                                      
                                                                                                                    -------------
TOTAL POST PETITION SECURED DEBT                                                                                        9,300,000
                                                                                                                    -------------
                                                                                      
                                                                                      
POST PETITION UNSECURED DEBT                                                          
TRADE ACCOUNTS PAYABLE & OTHER:                                                       
            Trade Accounts Payable (see attached schedules)                                                             1,646,389
            Payroll withholdings                                                      
            Accrued Payroll                                                           
            Accrued expenses-Estimated liability incurred, but not invoiced
                 as of the end of the period and deferred obligations.                                                  1,329,208
                                                                                      
                                                                                                                    -------------
TOTAL TRADE ACCOUNTS PAYABLE & OTHER                                                                                    2,975,597
                                                                                                                    -------------
                                                                                      
TOTAL ALL POST PETITION LIABILITIES                                                                                    12,275,597
                                                                                                                    =============
</TABLE>
<TABLE>
<CAPTION>
                                                                                0-30         31-60         61-90         OVER      
                                                                                DAYS          DAYS         DAYS         90 DAYS    
                                                                                                                                   
                                                                             ------------------------------------------------------
<S>                                                                          <C>             <C>           <C>          <C>
TAXES PAYABLE                                                                                                                      
                                                                                                                                   
            Federal Income Taxes                                                                                                   
            FICA-Employer's Share                                                                                                  
            FICA-Employee's Share                                                                                                  
            Unemployment Tax                                                                                                       
            State Sales & Use Tax                                                                                                  
            State __________ Tax                                                                                                   
            Personal Property Tax                                                                                                  
                                                                                                                                   
                                                                             ------------------------------------------------------
TOTAL TAXES PAYABLE                                                                     0            0             0             0 
                                                                             ------------------------------------------------------
                                                                                                                                   
POST PETITION SECURED DEBT                                                                                                         
DIP FINANCING                                                                                                                      
            Post petition advances-Morgens Waterfall Financing                                                                     
                                                                                                                                   
ACCRUED INTEREST PAYABLE                                                                                                           
            Post petition interest on Morgens Waterfall Financing                                                                  
                                                                                                                                   
                                                                             ------------------------------------------------------
TOTAL POST PETITION SECURED DEBT                                                        0            0             0             0 
                                                                             ------------------------------------------------------
                                                                                                                                   
                                                                                                                                   
POST PETITION UNSECURED DEBT                                                                                                       
TRADE ACCOUNTS PAYABLE & OTHER:                                                                                                    
            Trade Accounts Payable (see attached schedules)                                                                        
            Payroll withholdings                                                                                                   
            Accrued Payroll                                                                                                        
            Accrued expenses-Estimated liability incurred, but not invoiced                                                        
                 as of the end of the period and deferred obligations.                                                             
                                                                                                                                   
                                                                             ------------------------------------------------------
TOTAL TRADE ACCOUNTS PAYABLE & OTHER                                                    0            0             0             0 
                                                                             ------------------------------------------------------
                                                                                                                                   
TOTAL ALL POST PETITION LIABILITIES                                                     0            0             0             0 
                                                                             ======================================================
</TABLE>
<PAGE>   7
                                INCOME STATEMENT                      FORM OPR-5

CASE NAME: MOLTEN METAL TECHNOLOGY, INC.
CASE NUMBER:  97-21385-CJK


                                                            MONTH ENDED: 5/31/98
<TABLE>
<CAPTION>
                                                                        PRE          POST         MONTH        MONTH     
                                                                     PETITION      PETITION       ENDED        ENDED     
                                                                      12/3/97      12/31/97      1/31/98      2/28/98    
                                                                   ------------------------------------------------------
<S>                                                                <C>             <C>           <C>          <C>
NET REVENUE (INCOME)                                                                1,871,483             0              
                                                                   ------------------------------------------------------
                                                                   
COST OF GOODS SOLD                                                 
            Salaries & wages                                                        1,154,821       868,277      666,693 
            Less:  Salaries & wages capitalized in fixed assets                                           0              
            Benefits                                                                  489,984       226,464      207,528 
            Bad debt expense                                                                              0
            Cost of goods sold                                                      1,200,000       (20,833)             
            Decontamination & disposal                                                               18,888       18,888 
            Disposal costs-secondary wastes                                           145,779      (100,000)             
            Financing costs                                                           212,000         9,000
            Insurance                                                                  98,733        94,603       64,126 
            Legal services                                                                                0              
            Materials                                                                 391,707        70,359     (289,672)
            Office expense & supplies                                                     248        (7,193)      58,624 
            Other                                                                       4,393        57,436          416 
            Outside services                                                          369,073       143,619     (213,980)
            Professional services                                                   1,073,857       (99,264)      60,575 
            Rent-equipment                                                             73,365         1,759       42,453 
            Rent-office/buildings                                                     260,103       307,269      102,221 
            Supplies-processing                                                                     (15,755)
            Taxes                                                                      79,546        23,100       23,143 
            Telephone                                                                 123,714        34,394       36,810 
            Transportation                                                              3,355        20,000      (10,055)
            Travel & entertainment                                                     20,585        50,206       55,770 
            Utilities                                                                 200,831         3,345       39,704 
                                                                   
                                                                   ------------------------------------------------------
TOTAL COST OF GOODS SOLD                                                       0    5,902,094     1,685,674      863,244 
                                                                   ------------------------------------------------------
                                                                   
INCOME BEFORE INTEREST, DEPRECIATION,                              
            TAXES, OR EXTRAORDINARY EXPENSES                                   0   (4,030,611)   (1,685,674)    (863,244)
                                                                   ------------------------------------------------------
                                                                   
INTEREST EXPENSE                                                                                     90,855       90,960 
DEPRECIATION AND AMORTIZATION                                                         605,724       607,511      607,510 
INCOME TAX EXPENSE (BENEFIT)                                                                              0
REORGANIZATION EXPENSE                                                                              440,000      428,000 
OTHER (INCOME) EXPENSE                                                                                    0
(GAIN) LOSS ON SALE OF ASSETS                                                                             0              
                                                                   ------------------------------------------------------
                                                                   
NET INCOME (LOSS)                                                              0   (4,636,335)   (2,824,040)  (1,989,714)
                                                                   ======================================================
</TABLE>
<TABLE>
<CAPTION>
                                                                    MONTH         MONTH        MONTH         MONTH         MONTH   
                                                                    ENDED         ENDED        ENDED         ENDED         ENDED   
                                                                   3/31/98       4/30/98      5/31/98                              
                                                                 ------------------------------------------------------------------
<S>                                                              <C>             <C>          <C>            <C>           <C>     
NET REVENUE (INCOME)                                                  438,373     1,745,985      242,662                           
                                                                 ------------------------------------------------------------------
                                                                                                                                   
COST OF GOODS SOLD                                                                                                                 
            Salaries & wages                                          595,742       558,048      441,216                           
            Less:  Salaries & wages capitalized in fixed assets                                  (10,791)                          
            Benefits                                                  226,374       174,882      157,929                           
            Bad debt expense                                                                                                       
            Cost of goods sold                                        (20,833)                                                     
            Decontamination & disposal                                 18,888        18,888       18,888                           
            Disposal costs-secondary wastes                                         (61,832)     (12,447)                          
            Financing costs                                                                                                        
            Insurance                                                  62,851        62,851       62,851                           
            Legal services                                                                        45,265                           
            Materials                                                  29,516        93,000      112,049                           
            Office expense & supplies                                  48,345        13,330       (2,181)                          
            Other                                                       3,162         1,959          951                           
            Outside services                                           83,245        57,665      195,970                           
            Professional services                                     111,138      (142,485)      93,754                           
            Rent-equipment                                             19,203         5,635       13,116                           
            Rent-office/buildings                                     (94,110)      126,063       82,598                           
            Supplies-processing                                                                                                    
            Taxes                                                      23,656        69,948       59,400                           
            Telephone                                                  17,060        30,525       46,536                           
            Transportation                                                           13,981       16,760                           
            Travel & entertainment                                     61,786        85,638       86,258                           
            Utilities                                                 (16,525)       44,973       36,887                           
                                                                                                                                   
                                                                 ------------------------------------------------------------------
TOTAL COST OF GOODS SOLD                                            1,169,498     1,153,069    1,445,009             0           0 
                                                                 ------------------------------------------------------------------
                                                                                                                                   
INCOME BEFORE INTEREST, DEPRECIATION,                                                                                              
            TAXES, OR EXTRAORDINARY EXPENSES                         (731,125)      592,916   (1,202,347)            0           0 
                                                                 ------------------------------------------------------------------
                                                                                                                                   
INTEREST EXPENSE                                                       71,976       129,317      132,979                           
DEPRECIATION AND AMORTIZATION                                         594,069       605,304      612,072                           
INCOME TAX EXPENSE (BENEFIT)                                                                                                       
REORGANIZATION EXPENSE                                                343,147       387,043      306,803                           
OTHER (INCOME) EXPENSE                                                                                                             
(GAIN) LOSS ON SALE OF ASSETS                                          30,724                                                      
                                                                 ------------------------------------------------------------------
                                                                                                                                   
NET INCOME (LOSS)                                                  (1,771,041)     (528,748)  (2,254,201)            0           0 
                                                                 ==================================================================
</TABLE>
<PAGE>   8
                                   CHAPTER 11                       ATTACHMENT 1
                            MONTHLY OPERATING REPORT
                        MONTHLY REPORTING QUESTIONNAIRE

CASE NAME: MOLTEN METAL TECHNOLOGY, INC.
CASE NUMBER:  97-21385-CJK

                                                            MONTH ENDED: 5/31/98

                                                                          PAGE 1


1.   PAYROLL
          State the amount of all executive wages paid and taxes withheld and
paid.

<TABLE>
<CAPTION>
          NAME AND TITLE OF                                            DATE                   WAGES PAID       
          EXECUTIVE                                                    PAID             GROSS          NET     
          --------------------------                            -----------------------------------------------
<S>                                                             <C>                   <C>              <C>
          H. W. Arrowsmith, VP Nuclear Sales & Marketing        5/1, 5/15, & 5/29/98       37,962        25,071
          Eugene Berman, VP, Regul, Legal, & Extern Aff         5/1, 5/15, & 5/29/98       20,588        16,864
          F. Gordon Bitter, CEO & CFO, Director                 5/1, 5/15, & 5/29/98       32,588        20,620
          Steven Brien, VP, Chemical Sales & Marketing          5/1, 5/15, & 5/29/98       18,462        10,664
          Victor E. Gatto, Jr., VP, Government Markets          5/1, 5/15, & 5/29/98       20,793        18,933
          David Hoey, V,P Business Development                  5/1, 5/15, & 5/29/98       19,318        12,611
          F. James Howie, III, VP, Procurement                  5/1, 5/15, & 5/29/98       16,217        10,321
          Ethan E. Jacks, VP, General Counsel, Secretary        5/1, 5/15, & 5/29/98       19,898        11,827
          James E. Johnston, VP, Technical Development          5/1, 5/15, & 5/29/98       16,414        10,086
          Randall Jones, Assistant Secretary                    5/1, 5/15, & 5/29/98       13,526         8,749
          Christopher Nagel, Chief Technology Officer           5/1, 5/15, & 5/29/98       19,879        12,210
          Charles W. Shaver, President & COO, Director          5/1, 5/15, & 5/29/98       30,280        19,235
                                                                                      -------------------------
          TOTAL EXECUTIVE PAYROLL                                                         265,925       177,191
                                                                                      =========================
</TABLE>
<TABLE>
<CAPTION>
          NAME AND TITLE OF                                              TAXES WITHHELD         
          EXECUTIVE                                                  DUE           PAID         
          --------------------------                            -----------------------------   
<S>                                                              <C>            <C>       
          H. W. Arrowsmith, VP Nuclear Sales & Marketing               10,082         10,082    
          Eugene Berman, VP, Regul, Legal, & Extern Aff                 1,403          1,403    
          F. Gordon Bitter, CEO & CFO, Director                         9,895          9,895    
          Steven Brien, VP, Chemical Sales & Marketing                  6,488          6,488    
          Victor E. Gatto, Jr., VP, Government Markets                  1,115          1,115    
          David Hoey, V,P Business Development                          5,421          5,421    
          F. James Howie, III, VP, Procurement                          4,299          4,299    
          Ethan E. Jacks, VP, General Counsel, Secretary                5,675          5,675    
          James E. Johnston, VP, Technical Development                  3,843          3,843    
          Randall Jones, Assistant Secretary                            2,640          2,640    
          Christopher Nagel, Chief Technology Officer                   4,992          4,992    
          Charles W. Shaver, President & COO, Director                  7,820          7,820    
                                                                -----------------------------   
          TOTAL EXECUTIVE PAYROLL                                      63,673         63,673    
                                                                =============================   
</TABLE>



2.  INSURANCE

          Is Workers' Compensation and other insurance in effect?      Yes
                                                                    ---------
          Are payments current?                                        Yes
                                                                    ---------

          If any policy has lapsed, been replaced or renewed, state so in the
          schedule below. Attach a copy of the new policy's binder or coverage
          page.

<TABLE>
<CAPTION>
                                                                                                                    DATE
                                                       COVERAGE          POLICY      EXPIRATION     PREMIUM       COVERAGE
TYPE                       CARRIER NAME                 AMOUNT           NUMBER         DATE         AMOUNT      PAID THRU
- ------------------------------------------------------------------------------------------------------------------------------
<S>                        <C>                         <C>               <C>         <C>            <C>          <C>


                           SEE ATTACHED INSURANCE EXPIRATION CERTIFICATE
</TABLE>
<PAGE>   9
                     STATEMENT OF SOURCES AND USES OF CASH            FORM OPR-6


CASE NAME: MOLTEN METAL TECHNOLOGY, INC.
CASE NUMBER:  97-21385-CJK


                                                            MONTH ENDED: 5/31/98

<TABLE>
<CAPTION>
                                                                                                 TOTAL
                                                                      PRE          POST          MONTH          MONTH     
                                                                   PETITION      PETITION        ENDED          ENDED     
                                                                   12/1-12/2    12/3-12/31      12/31/97       1/31/98    
                                                                 ---------------------------------------------------------
<S>                                                              <C>            <C>            <C>            <C>    
CASH FLOWS-OPERATING ACTIVITIES:

Net Earnings (Loss)                                                               (4,636,335)    (4,636,335)   (2,824,040)

Adjustments to Reconcile Net Earnings to
Net Cash Provided (Used) by Operating Activities:
            Depreciation & Amortization                                              605,724        605,724       607,510 
            Decrease (Increase)-Accounts Receivable                                 (123,304)      (123,304)      429,050 
            Decrease (Increase)-Inventories                                        1,199,550      1,199,550             0 
            Decrease (Increase)-Prepaid Expenses                                    (282,112)      (282,112)     (171,034)
            Decrease (Increase)-Other Assets                                          13,596         13,596       (95,902)
            Increase (Decrease)-Pre Petition Liabilities                            (291,946)      (291,946)   (1,289,056)
            Increase (Decrease)-Post Petition Liabilities                          1,892,945      1,892,945    (2,133,688)
            Increase (Decrease)-Deferred Revenue                                  (1,809,090)    (1,809,090)     (177,379)

                                                                 ---------------------------------------------------------
NET CASH PROVIDED (USED) BY OPERATING ACTIVITIES                             0    (3,430,972)    (3,430,972)   (5,654,539)
                                                                 ---------------------------------------------------------


CASH FLOWS USED IN INVESTING ACTIVITIES
            Capital Expenditures                                                     (25,146)       (25,146)     (140,860)
            Sale of Net Fixed Assets
                                                                 ---------------------------------------------------------
NET CASH PROVIDED (USED) IN INVESTING ACTIVITIES                             0       (25,146)       (25,146)     (140,860)
                                                                 ---------------------------------------------------------


CASH FLOWS FROM FINANCING ACTIVITIES:
            Increase (Decrease)-Morgens Waterfall                                  5,260,000      5,260,000     4,040,000 
            Increase (Decrease)-Shareholder Valuations                                15,656         15,656        (4,772)

            Purchase of Treasury Stock-Preferred Shares

                                                                 ---------------------------------------------------------
NET CASH PROVIDED (USED) IN FINANCING ACTIVITIES                             0     5,275,656      5,275,656     4,035,228 
                                                                 ---------------------------------------------------------


NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS                         0     1,819,538      1,819,538    (1,760,171)

Cash and Cash Equivalents at Beginning of Period                                   4,893,869      4,893,869     6,713,407 
                                                                 ---------------------------------------------------------


Cash and Cash Equivalents at End of Period                                   0     6,713,407      6,713,407     4,953,236 
                                                                 =========================================================
</TABLE>
<TABLE>
<CAPTION>
                                                                MONTH         MONTH         MONTH         MONTH       
                                                                ENDED         ENDED         ENDED         ENDED       
                                                               2/28/98       3/31/98       4/30/98       5/31/98      
                                                            --------------------------------------------------------- 
<S>                                                         <C>              <C>           <C>           <C> 
CASH FLOWS-OPERATING ACTIVITIES:                                                                                      
                                                                                                                      
Net Earnings (Loss)                                            (1,989,714)   (1,771,041)     (528,748)    (2,254,201) 
                                                                                                                      
Adjustments to Reconcile Net Earnings to                                                                              
Net Cash Provided (Used) by Operating Activities:                                                                     
            Depreciation & Amortization                           607,508       570,139       605,304        611,966  
            Decrease (Increase)-Accounts Receivable                98,866      (431,963)      683,820       (151,697) 
            Decrease (Increase)-Inventories                             0             0             0              0  
            Decrease (Increase)-Prepaid Expenses                 (335,276)     (215,154)     (519,072)       847,658  
            Decrease (Increase)-Other Assets                      (33,519)     (558,244)      (89,406)       (76,086) 
            Increase (Decrease)-Pre Petition Liabilities        2,634,919      (271,163)      779,874        216,609  
            Increase (Decrease)-Post Petition Liabilities         503,681      (832,693)   (1,511,301)      (749,701) 
            Increase (Decrease)-Deferred Revenue                  (20,833)      (20,833)     (235,286)       (82,456) 
                                                                                                                      
                                                            --------------------------------------------------------- 
NET CASH PROVIDED (USED) BY OPERATING ACTIVITIES                1,465,632    (3,530,952)     (814,815)    (1,637,908) 
                                                            --------------------------------------------------------- 
                                                                                                                      
                                                                                                                      
CASH FLOWS USED IN INVESTING ACTIVITIES                                                                               
            Capital Expenditures                                  (61,915)      (73,286)      (39,458)      (699,426) 
            Sale of Net Fixed Assets                                                                                  
                                                            --------------------------------------------------------- 
NET CASH PROVIDED (USED) IN INVESTING ACTIVITIES                  (61,915)      (73,286)      (39,458)      (699,426) 
                                                            --------------------------------------------------------- 
                                                                                                                      
                                                                                                                      
CASH FLOWS FROM FINANCING ACTIVITIES:                                                                                 
            Increase (Decrease)-Morgens Waterfall              (2,300,000)            0             0      2,300,000  
            Increase (Decrease)-Shareholder Valuations             15,110         6,647         6,433          6,647  
                                                                                                                      
            Purchase of Treasury Stock-Preferred Shares                                                               
                                                                                                                      
                                                            --------------------------------------------------------- 
NET CASH PROVIDED (USED) IN FINANCING ACTIVITIES               (2,284,890)        6,647         6,433      2,306,647  
                                                            --------------------------------------------------------- 
                                                                                                                      
                                                                                                                      
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS             (881,173)   (3,597,591)     (847,840)       (30,687) 
                                                                                                                      
Cash and Cash Equivalents at Beginning of Period                4,953,236     4,072,063       474,472       (373,368) 
                                                            --------------------------------------------------------- 
                                                                                                                      
                                                                                                                      
Cash and Cash Equivalents at End of Period                      4,072,063       474,472      (373,368)      (404,055) 
                                                            ========================================================= 
</TABLE>
<PAGE>   10
                                   CHAPTER 11                       ATTACHMENT 1
                            MONTHLY OPERATING REPORT
                        MONTHLY REPORTING QUESTIONNAIRE

CASE NAME: MOLTEN METAL TECHNOLOGY, INC.
CASE NUMBER:  97-21385-CJK

                                                            MONTH ENDED: 5/31/98

                                                                          PAGE 2


3.  BANK ACCOUNTS

<TABLE>
<CAPTION>
                                               MMT           MMT              MMT          
                                            OPERATING      PAYROLL          PAYROLL        
                                          -------------------------------------------------
<S>                                       <C>            <C>              <C>
BANK NAME                                  U.S. TRUST    U.S. TRUST       NATIONSBANK      
                                          
ACCOUNT NUMBER                             1100937836    1100937844       3001270655       
                                          
                                          
BEGINNING BOOK BALANCE                         (513,535)            0       (2,382)        
                                          
PLUS:       Deposits-Collections of A/R          94,507                                    
            Other Receipts                       67,488                                    
            Loan Advances                     2,300,000                                    
                                                                                           
LESS:       Disbursements                    (4,694,593)                                   
            Payroll                                                        (648,615)       
            Returned Checks                                                                
            Loan Repayments                                                                
                                                                                           
OTHER:      Adjustments                        (178,107)                                   
            Transfers In (Out)                2,501,182                     670,000        
                                                                                           
                                          -------------------------------------------------
                                          
ENDING BOOK BALANCE                            (423,058)            0       19,003         
                                          =================================================
</TABLE>
<TABLE>
<CAPTION>
                                           ALEX         OPPEN-      ESCROW AT                      
                                           BROWN        HEIMER        ROPES         TOTAL          
                                        -------------------------------------------------------       
<S>                                     <C>            <C>          <C>            <C>
                                           ALEX         OPPEN-       ROPES &                       
BANK NAME                                  BROWN        HEIMER         GRAY                        
                                                                                                   
ACCOUNT NUMBER                           210-71007     033-82238                                   
                                                                                                   
                                                                                                   
BEGINNING BOOK BALANCE                         6,543       136,006            0       (373,368)    
                                                                                                   
PLUS:       Deposits-Collections of A/R                                                 94,507     
            Other Receipts                     6,647       251,986                     326,121     
            Loan Advances                                                            2,300,000     
                                                                                             0     
LESS:       Disbursements                                                           (4,694,593)    
            Payroll                                                                   (648,615)    
            Returned Checks                                                                  0     
            Loan Repayments                                                                  0     
                                                                                             0     
OTHER:      Adjustments                                                               (178,107)    
            Transfers In (Out)               (13,190)     (387,992)                  2,770,000     
                                                                                             0     
                                        -------------------------------------------------------    
                                                                                                   
ENDING BOOK BALANCE                                0             0            0       (404,055)    
                                        =======================================================    
</TABLE>


4.  POST PETITION PAYMENTS TO PROFESSIONALS AND ON PRE PETITION DEBTS
            List any post petition payments to professional and payments on
            Pre-petition debts in the schedule below.

<TABLE>
<CAPTION>
            Payments To/On                                              Amount            Date         Check #
            --------------------------                            ------------------------------------------------
<S>         <C>                                                   <C>                    <C>            <C>
            PROFESSIONALS (ATTORNEYS,
            ACCOUNTANTS, ETC.):


            The Blackstone Group                                        133,418          5/11/98        41931





                                                                  ====================
                                                                        133,418
                                                                  ====================

            PRE-PETITION DEBTS






                                                                  ====================
            TOTAL PAYMENTS OF PRE-PETITION DEBTS                           0
                                                                  ====================
</TABLE>
<PAGE>   11
                         INSURANCE EXPIRATION STATEMENT

<TABLE>
<CAPTION>
                                             INSURANCE         COVERAGE       POLICY    EXPIRATION        PREMIUM        COVERAGE
CARRIER NAME AND ADDRESS           TYPE        AGENT            AMOUNT        NUMBER       DATE            AMOUNT       PAID THRU
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                <C>       <C>               <C>            <C>       <C>               <C>           <C>


                SEE ATTACHED
</TABLE>


                I declare under penalty of perjury that the information provided
                on the attachments hereto is true and correct to the best of my
                knowledge and belief.


                Date:    5/26/98
                       -----------


                                      Molten Metal Technology, Inc.
                                      
                                      
                                      By: /s/ F. Gordon Bitter
                                         --------------------------
                                            F. Gordon Bitter
                                            Chief Executive Officer
                                      
                                      MMT of Tennessee, Inc.
                                      
                                      
                                      By: /s/ F. Gordon Bitter
                                         --------------------------
                                            F. Gordon Bitter
                                            Vice President
                                      
                                      M4 Environmental, L.P.
                                      
                                      
                                      By: /s/ F. Gordon Bitter
                                         --------------------------
                                            M4 Environmental Management, Inc.
                                            General Partner
                                      
                                      By: /s/ F. Gordon Bitter
                                         --------------------------
                                            F. Gordon Bitter
                                            Vice President
                                      
                                      MMT Federal Holdings, Inc.
                                      
                                      
                                      By: /s/ F. Gordon Bitter
                                         --------------------------
                                            F. Gordon Bitter
                                            Vice President
                                      
<PAGE>   12
                   Mollen Metal Technology Insurance Schedule
                                   Exhibit A

<TABLE>
<CAPTION>

        CARRIER NAME & ADDRESS                         TYPE                  CO        LIMITS    EXPIRATION      PREMIUM      PAID
                                                                             ENTITY                 DATE                      THRU
<S>                                  <C>                                     <C>       <C>       <C>              <C>        <C>   
Blue Cross & Blue Shield of RI       Full Coverage Medical                    MMT                5/1-5/31/98      $10,622    Current
PO Box 1057
Providence, RI
02901-1057

Delta Dental Plan                    Self Funded Dental                       MMT                5/1-5/31/98         None    Current
PO Box 5-0198                                                                                                                Current
Woburn, MA 01815-0198                                                                                                        Current


Fortis Benefits Insurance Co.        Employee Funded-Supplemental Life        MMT                5/1-5/31/98       $1,968    Current
PO Box 27-644-1
Kansas City, MO 64180-0644


Fortis Benefits Insurance Co.        Employee Funded-Supplemental Life        MMT TN             5/1-5/31/98       $1,185    Current
PO Box 27-644-1
Kansas City, MO 64180-0644


Fortis Self Funded Admin Services    Medical Stop Loss and Life Insurance     MMT                5/1-5/31/98      $10,960    Current
10159 Wayzata Boulevard              Premiums
Minnetonka, MN 55305


Fortis Self Funded Admin Services    Medical Stop Loss and Life Insurance     MMT TN             5/1-5/31/98       $8,231    Current
10159 Wayzata Boulevard              Premiums
Minnetonka, MN 55305


Fortis Self Funded Admin Services    Self Funded Medical Claims               MMT &              5/1-5/31/98      $50,000    Current
10159 Wayzata Boulevard                                                       MMT TN
Minnetonka, MN 55305


UNUM Life Insurance                  Employee Funded Long Term Disability     MMT                5/1-5/31/98       $1,951    Current
</TABLE>

                                 Page 13 of 14

<PAGE>   13

                   Mollen Metal Technology Insurance Schedule
                                   Exhibit A

<TABLE>
<CAPTION>

        CARRIER NAME & ADDRESS                         TYPE                  CO        LIMITS    EXPIRATION      PREMIUM      PAID
                                                                             ENTITY                 DATE                      THRU
<S>                                  <C>                                     <C>       <C>       <C>              <C>        <C>   
PO Box 7777-W0050
Philadelphia, PA
19175-0050


UNUM Life Insurance                  Short Term Disability                    MMT                5/1-5/31/98       $2,110    Current
2211 Congress Street
Portland, ME 04122
</TABLE>

                                 Page 14 of 14




<PAGE>   1
                                                                    EXHIBIT 99.3

                         UNITED STATES BANKRUPTCY COURT
                            DISTRICT OF MASSACHUSETTS
                                EASTERN DIVISION

IN RE: MMT OF TENNESSEE, INC.                         CASE NO.:  97-21386-CJK
             DEBTOR                                   JUDGE:   CAROL J. KENNER

                                                                   CHAPTER 11
MONTHLY OPERATING REPORT FOR MONTH ENDING:                          5/31/98


COMES NOW, MMT OF TENNESSEE, INC. , Debtor in Possession, and hereby its Monthly
Operating Report for the period commencing 5/1/98 and ending 5/31/98 as shown by
the report and exhibits consisting of 10 pages and containing the following,
as indicated:

                  X        Monthly Reporting Questionnaire (Attachment 1)
            ------------

                  X        Comparative Balance Sheets (Forms OPR-1 and OPR-2)
            ------------

                  X        Summary of Accounts Receivable (Form OPR-3)
            ------------

                  X        Schedule of Post-Petition Liabilities (Form OPR-4)
            ------------

                  X        Income Statement (Form OPR-5)
            ------------

                  X        Statement of Sources and Uses of Cash (Form OPR-6)
            ------------


I declare under penalty of perjury that this report and all attachments are true
and correct to the best of my knowledge and belief.


Date:          6/26/98            DEBTOR-IN-POSSESSION
            -----------
                                  By: /s/ F. Gordon Bitter
                                     --------------------------
                                  Name & Title:F. Gordon Bitter, Vice President
                                               MMT of Tennessee, Inc.
                                               421 Currant Road
                                               Fall River, MA  02720
                                               Telephone:    508-324-6497


<PAGE>   2
                         UNITED STATES BANKRUPTCY COURT
                            DISTRICT OF MASSACHUSETTS
                                EASTERN DIVISION

IN RE: MMT OF TENNESSEE, INC.                         CASE NO.:  97-21386-CJK
             DEBTOR                                   JUDGE:   CAROL J. KENNER

                                                                      CHAPTER 11

                  NOTE TO THE MONTHLY OPERATING REPORT:


                  Consistent with the Debtor's historical accounting practices,
                  this operating report accounts for all cash transfers among
                  the Debtor and its affiliates and allocates some, but not all,
                  of the expenses borne by one affiliate for the benefit of
                  another or the others. In the absence of a decision for
                  substantive consolidation, the Debtor will develop an
                  appropriate allocation of expenses among the affiliated
                  entities.


<PAGE>   3
                           COMPARATIVE BALANCE SHEETS                 FORM OPR-1

Case name:   MMT OF TENNESSEE, INC.
Case Number: 97-21386-CJK
                                                            MONTH ENDED: 5/31/98

<TABLE>
<CAPTION>
                                                        FILING         MONTH          MONTH         MONTH    
                                                         DATE          ENDED          ENDED         ENDED    
                                                        12/3/97       12/31/97       1/31/98       2/28/98   
                                                   --------------------------------------------------------
ASSETS
CURRENT ASSETS
<S>                                                  <C>             <C>          <C>           <C>          
Cash                                                      66,358      1,007,375     2,277,256     1,077,633  
Other negotiable instruments (i.e.  CD's,
             Treasury Bills, Etc.)
Accounts Receivable-Trade, Net (OPR-3)                 6,494,603      6,876,561     6,001,822     6,051,677  
Less:   allowance for doubtful accounts                 (150,000)      (150,000)     (150,000)     (150,000) 
Accounts Receivable-Other                                291,141        156,625       207,867       693,516  
Inventory, at cost                                     1,610,203      1,167,014     1,148,718     1,120,419  
Prepaid expenses                                          30,357        155,838       145,218       128,915  
Deposits                                                  57,500         57,500        76,925        79,120  
Other:



             Restricted Cash Collateral Deposits         215,520        215,520       215,520       215,520  


                                                   --------------------------------------------------------
TOTAL CURRENT ASSETS                                   8,615,682      9,486,433     9,923,326     9,216,800  
                                                   --------------------------------------------------------

PROPERTY, PLANT AND EQUIPMENT, AT COST                61,645,241     61,716,593    61,880,581    62,238,580  
Less:  Accumulated Depreciation                       (2,104,309)    (2,281,673)   (2,598,650)   (2,915,627) 

                                                   --------------------------------------------------------
NET PROPERTY, PLANT AND EQUIPMENT                     59,540,932     59,434,920    59,281,931    59,322,953  
                                                   --------------------------------------------------------

OTHER ASSETS (ITEMIZED IF VALUE EXCEEDS
             10% OF "TOTAL ASSETS")
             Intangible Assets                        12,508,628     12,508,628    12,508,630    12,508,629  
             Less:  Accumulated Amortization          (2,344,293)    (2,509,114)   (2,665,588)   (2,822,059) 

                                                   --------------------------------------------------------
TOTAL OTHER ASSETS                                    10,164,335      9,999,514     9,843,042     9,686,570  
                                                   --------------------------------------------------------

TOTAL ASSETS                                          78,320,949     78,920,867    79,048,299    78,226,323  
                                                   ========================================================
</TABLE>


<TABLE>
<CAPTION>
                                                       MONTH         MONTH          MONTH          MONTH
                                                       ENDED         ENDED          ENDED          ENDED
                                                      3/31/98       4/30/98        5/31/98
                                                  ---------------------------------------------------------
ASSETS
CURRENT ASSETS
<S>                                                <C>            <C>            <C>              <C>     
Cash                                                 1,212,651      1,206,564       587,898
Other negotiable instruments (i.e.  CD's,
             Treasury Bills, Etc.)
Accounts Receivable-Trade, Net (OPR-3)               6,624,034      7,385,716     7,136,438
Less:   allowance for doubtful accounts               (150,000)      (150,000)     (150,000)
Accounts Receivable-Other                              692,222      1,203,183     1,096,325
Inventory, at cost                                   1,369,641      1,237,485     1,500,031
Prepaid expenses                                       107,515         97,109        71,069
Deposits                                                81,446         81,446        81,446
Other:



             Restricted Cash Collateral Deposits       215,520        215,520       215,520


                                                  ---------------------------------------------------------
TOTAL CURRENT ASSETS                                10,153,029     11,277,023    10,538,727               0
                                                  ---------------------------------------------------------

PROPERTY, PLANT AND EQUIPMENT, AT COST              62,407,138     62,689,022    64,521,062
Less:  Accumulated Depreciation                     (3,240,046)    (3,557,383)   (3,899,284)

                                                  ---------------------------------------------------------
NET PROPERTY, PLANT AND EQUIPMENT                   59,167,092     59,131,639    60,621,778               0
                                                  ---------------------------------------------------------

OTHER ASSETS (ITEMIZED IF VALUE EXCEEDS
             10% OF "TOTAL ASSETS")
             Intangible Assets                      12,508,629     12,508,630    12,508,629
             Less:  Accumulated Amortization        (2,978,531)    (3,135,004)   (3,291,475)

                                                  ---------------------------------------------------------
TOTAL OTHER ASSETS                                   9,530,098      9,373,626     9,217,154               0
                                                  ---------------------------------------------------------

TOTAL ASSETS                                        78,850,219     79,782,288    80,377,659               0
                                                  =========================================================
</TABLE>


<PAGE>   4

                           COMPARATIVE BALANCE SHEETS                 FORM OPR-2

CASE NAME:   MMT OF TENNESSEE, INC.
CASE NUMBER: 97-21386-CJK

                                                            MONTH ENDED: 5/31/98

<TABLE>
<CAPTION>
                                                               FILING          MONTH           MONTH           MONTH      
                                                                DATE           ENDED           ENDED           ENDED      
                                                               12/3/97        12/31/97        1/31/98         2/28/98     
                                                           --------------------------------------------------------------
<S>                                                           <C>            <C>             <C>             <C>          
LIABILITIES

POST PETITION LIABILITIES

Secured Debt (See Form OPR-4)
Unsecured Debt-Intercompany Obligations due to cash
             transfers in Post Petition Operations                              1,209,386       2,137,381       1,765,503 
Unsecured Debt-Obligations incurred in Post Petition
             Operations (See Form OPR-4)                                           35,238         306,240       2,851,654 

                                                           --------------------------------------------------------------
TOTAL POST PETITION LIABILITIES                                          0      1,244,624       2,443,621       4,617,157 

PRE PETITION INTERCOMPANY LIABILITIES                           90,708,931     90,708,931      90,708,931      90,708,931 
DEFERRED REVENUE/DEFERRED INCOME                                 1,226,727      1,280,885       1,048,733       1,056,514 
TOTAL OTHER PRE PETITION LIABILITIES                             2,666,165      2,274,081       2,274,081         294,367 
                                                           --------------------------------------------------------------

TOTAL LIABILITIES                                               94,601,823     95,508,521      96,475,366      96,676,969 
                                                           --------------------------------------------------------------

SHAREHOLDERS' EQUITY (DEFICIT)

Preferred Stock
Common Stock                                                            10             10              10              10 
Paid in Capital
Valuation Allowance
Dividends Paid
Treasury Stock
Deferred Compensation
Retained Earnings
             Through Filing Date                               (16,280,884)   (16,280,884)    (16,280,884)    (16,280,884)
             Post Filing Date                                                    (306,780)     (1,146,193)     (2,169,772)

                                                           --------------------------------------------------------------
TOTAL SHAREHOLDERS' EQUITY (DEFICIT)                           (16,280,874)   (16,587,654)    (17,427,067)    (18,450,646)
                                                           -------------------------------------------------------------

TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY                      78,320,949     78,920,867      79,048,299      78,226,323 
                                                           =============================================================
</TABLE>


<TABLE>
<CAPTION>
                                                              MONTH          MONTH           MONTH           MONTH
                                                              ENDED          ENDED           ENDED           ENDED
                                                             3/31/98        4/30/98         5/31/98
                                                          -------------------------------------------------------------
<S>                                                         <C>            <C>             <C>              <C>
LIABILITIES

POST PETITION LIABILITIES

Secured Debt (See Form OPR-4)
Unsecured Debt-Intercompany Obligations due to cash
             transfers in Post Petition Operations             2,973,763      4,181,934       5,742,335
Unsecured Debt-Obligations incurred in Post Petition
             Operations (See Form OPR-4)                       2,945,864      3,063,958       2,757,770

                                                          -------------------------------------------------------------
TOTAL POST PETITION LIABILITIES                                5,919,627      7,245,892       8,500,105               0

PRE PETITION INTERCOMPANY LIABILITIES                         90,708,931     90,708,931      90,708,931
DEFERRED REVENUE/DEFERRED INCOME                               1,056,514      1,459,677       1,388,645
TOTAL OTHER PRE PETITION LIABILITIES                             285,142        138,445        (328,660)
                                                          -------------------------------------------------------------

TOTAL LIABILITIES                                             97,970,214     99,552,945     100,269,021               0
                                                          -------------------------------------------------------------

SHAREHOLDERS' EQUITY (DEFICIT)

Preferred Stock
Common Stock                                                          10             10              10
Paid in Capital
Valuation Allowance
Dividends Paid
Treasury Stock
Deferred Compensation
Retained Earnings
             Through Filing Date                             (16,280,884)   (16,280,884)    (16,280,884)
             Post Filing Date                                 (2,839,121)    (3,489,783)     (3,610,488)

                                                          -------------------------------------------------------------
TOTAL SHAREHOLDERS' EQUITY (DEFICIT)                         (19,119,995)   (19,770,657)    (19,891,362)              0
                                                          -------------------------------------------------------------

TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY                    78,850,219     79,782,288      80,377,659               0
                                                          =============================================================
</TABLE>

<PAGE>   5

                        SUMMARY OF ACCOUNTS RECEIVABLE              FORM OPR-3

CASE NAME:   MMT OF TENNESSEE, INC.
CASE NUMBER: 97-21386-CJK

                                                            MONTH ENDED: 5/31/98
                                                                    

<TABLE>
<CAPTION>
                                                                            0-30         31-60          61-90         OVER
                                                             TOTAL          DAYS          DAYS          DAYS         90 DAYS
                                                         --------------------------------------------------------------------
<S>                                                       <C>            <C>            <C>           <C>         <C>      
DATE OF FILING:   12/3/97                                    6,494,603     3,298,967      877,780       755,577     1,562,279
                  Allowance for doubtful accounts             (150,000)                                              (150,000)
                                                          --------------------------------------------------------------------
                                                             6,344,603     3,298,967      877,780       755,577     1,412,279
                                                          ====================================================================

MONTH:            12/31/97                                   6,876,561     1,785,407    2,792,314       519,172     1,779,668
                  Allowance for doubtful accounts             (150,000)                                              (150,000)
                                                          --------------------------------------------------------------------
                                                             6,726,561     1,785,407    2,792,314       519,172     1,629,668
                                                          ====================================================================

MONTH:            1/31/98                                    6,001,822     1,290,680    1,267,373     1,458,561     1,985,208
                  Allowance for doubtful accounts             (150,000)                                              (150,000)
                                                          --------------------------------------------------------------------
                                                             5,851,822     1,290,680    1,267,373     1,458,561     1,835,208
                                                          ====================================================================

MONTH:            2/28/98                                    6,051,677     1,308,292    1,019,381       572,967     3,151,037
                  Allowance for doubtful accounts             (150,000)                                              (150,000)
                                                          --------------------------------------------------------------------
                                                             5,901,677     1,308,292    1,019,381       572,967     3,001,037
                                                          ====================================================================

MONTH:            3/31/98                                    6,624,034     2,568,080    1,505,814       345,094     2,205,046
                  Allowance for doubtful accounts                    0
                                                          --------------------------------------------------------------------
                                                             6,624,034     2,568,080    1,505,814       345,094     2,205,046
                                                          ====================================================================

MONTH:            4/30/98                                    7,385,716     3,155,026      851,867       791,510     2,587,313
                  Allowance for doubtful accounts                    0
                                                          --------------------------------------------------------------------
                                                             7,385,716     3,155,026      851,867       791,510     2,587,313
                                                          ====================================================================

MONTH:                                                       7,485,882     1,810,443    2,879,549       361,683     2,434,207
                  Allowance for doubtful accounts
                                                          --------------------------------------------------------------------
                                                             7,485,882     1,810,443    2,879,549       361,683     2,434,207
                                                          ====================================================================
</TABLE>


<PAGE>   6

                       SCHEDULE OF POST PETITION LIABILITIES         FORM OPR-4

CASE NAME:   MMT OF TENNESSEE, INC.
CASE NUMBER: 97-21386-CJK


                                                            MONTH ENDED: 5/31/98
<TABLE>
<CAPTION>

                                                                        DATE     DATE      TOTAL    0-30   31-60    61-90    OVER
                                                                      INCURRED   DUE        DUE     DAYS    DAYS    DAYS    90 DAYS

                                                              ---------------------------------------------------------------------
<S>                                                                   <C>       <C>    <C>         <C>     <C>      <C>      <C>
TAXES PAYABLE

            Federal Income Taxes                                                            NONE
            FICA-Employer's Share                                                           NONE
            FICA-Employee's Share                                                           NONE
            Unemployment Tax                                                                NONE
            State Sales & Use Tax                                                           NONE
            State            Tax                                                            NONE
            Personal Property Tax                                                           NONE

                                                                                      ---------------------------------------------
TOTAL TAXES PAYABLE                                                                            0        0      0        0        0
                                                                                      ---------------------------------------------
POST PETITION SECURED DEBT
DIP FINANCING

ACCRUED INTEREST PAYABLE
                                                                                      ---------------------------------------------
TOTAL POST PETITION SECURED DEBT                                                               0        0      0        0        0
                                                                                      ---------------------------------------------
POST PETITION UNSECURED DEBT
TRADE ACCOUNTS PAYABLE & OTHER:
            Trade Accounts Payable (see attached schedules)
            Payroll withholdings
            Accrued Payroll
            Accrued expenses-Estimated liability incurred,                             2,757,770
                 but not invoiced as of the end of the period.
                                                                                      ---------------------------------------------
TOTAL TRADE ACCOUNTS PAYABLE & OTHER                                                   2,757,770        0      0        0        0
                                                                                      ---------------------------------------------
TOTAL ALL POST PETITION LIABILITIES                                                    2,757,770        0      0        0        0
                                                                                      =============================================
</TABLE>


<PAGE>   7

                           INCOME STATEMENT                          FORM OPR-5

CASE NAME:   MMT OF TENNESSEE, INC.
CASE NUMBER: 97-21386-CJK

                                                            MONTH ENDED: 5/31/98
<TABLE>
<CAPTION>
                                                                PRE          POST         MONTH        MONTH         MONTH     
                                                             PETITION      PETITION       ENDED        ENDED         ENDED     
                                                              12/3/97      12/31/97      1/31/98      2/28/98       3/31/98    
                                                           --------------------------------------------------------------------
NET REVENUE (INCOME)                                                        2,232,158     1,797,407    2,069,601     2,205,371 
                                                           --------------------------------------------------------------------
<S>                                                           <C>          <C>           <C>          <C>           <C>        
COST OF GOODS SOLD
     Salaries & wages                                                         521,313       485,588      383,435       527,591 
     Less:  Salaries & wages capitalized in fixed assets                                   (121,795)    (120,000)              
     Benefits                                                                  72,866        91,573      106,745        85,236 
     Bad debt expense                                                          18,625
     Cost of goods sold                                          
     Decontamination & disposal                                                 7,870         7,870        7,870         7,870 
     Disposal costs-secondary wastes                                             (378)      205,018      431,112       522,653 
     Financing costs                                             
     Insurance                                                                  9,905        20,331       20,331        20,331 
     Legal services                                              
     Materials                                                                752,418       795,840      709,052       547,077 
     Office expense & supplies                                                               28,331       12,759         2,792 
     Other                                                                      5,866                      1,064         1,878 
     Outside services                                                         444,939       299,525      498,275               
     Professional services                                                    126,443       159,132      284,046       386,411 
     Rent-equipment                                                            31,509        37,565       45,179        39,401 
     Rent-office/buildings                                                      4,649        10,000        5,000               
     Supplies-processing                                                       18,515        15,755
     Taxes                                                                      8,000        17,119        8,000        10,393 
     Telephone                                                                 10,724        11,773        2,000           260 
     Transportation                                                           107,117        73,218      165,645       128,791 
     Travel & entertainment                                                    22,923        21,054       24,819        48,515 
     Utilities                                                                 33,512         5,474       34,099        64,629 
                                                          
                                                           --------------------------------------------------------------------
TOTAL COST OF GOODS SOLD                                               0    2,196,816     2,163,371    2,619,431     2,393,828 
                                                           --------------------------------------------------------------------

INCOME BEFORE INTEREST, DEPRECIATION,
            TAXES, OR EXTRAORDINARY EXPENSES                           0       35,342      (365,964)    (549,830)     (188,457)
                                                           --------------------------------------------------------------------

INTEREST EXPENSE                                                                                              50               
DEPRECIATION AND AMORTIZATION                                                 342,185       473,449      473,449       480,892 
INCOME TAX EXPENSE (BENEFIT)
REORGANIZATION EXPENSE                                                                                       250
OTHER (INCOME) EXPENSE                                                            (63)
(GAIN) LOSS ON SALE OF ASSETS
                                                           --------------------------------------------------------------------

NET INCOME (LOSS)                                                      0     (306,780)     (839,413)  (1,023,579)     (669,349)
                                                           ====================================================================
</TABLE>

<TABLE>
<CAPTION>
                                                          MONTH        MONTH         MONTH         MONTH
                                                          ENDED        ENDED         ENDED         ENDED
                                                         4/30/98      5/31/98
                                                        -----------------------------------------------------
NET REVENUE (INCOME)                                      2,721,396    2,960,820
                                                        -----------------------------------------------------
<S>                                                      <C>          <C>                   <C>           <C>
COST OF GOODS SOLD
     Salaries & wages                                       490,006      630,634
     Less:  Salaries & wages capitalized in fixed assets                (160,080)
     Benefits                                               100,378      116,823
     Bad debt expense                                   
     Cost of goods sold                                 
     Decontamination & disposal                               7,870        7,870
     Disposal costs-secondary wastes                         26,866      846,871
     Financing costs                                    
     Insurance                                               20,331       12,206
     Legal services                                     
     Materials                                              905,582      466,187
     Office expense & supplies                               (1,278)      88,123
     Other                                                      353          265
     Outside services                                       745,567      187,898
     Professional services                                  330,022      140,188
     Rent-equipment                                          30,622       36,168
     Rent-office/buildings                                   10,000        5,000
     Supplies-processing                                
     Taxes                                                   18,768       40,250
     Telephone                                                1,529        8,904
     Transportation                                         138,760       77,439
     Travel & entertainment                                  37,894       49,869
     Utilities                                               34,880       40,769
                                                        
                                                        -----------------------------------------------------
TOTAL COST OF GOODS SOLD                                  2,898,150    2,595,384             0             0
                                                        -----------------------------------------------------

INCOME BEFORE INTEREST, DEPRECIATION,
            TAXES, OR EXTRAORDINARY EXPENSES               (176,754)     365,436             0             0
                                                        -----------------------------------------------------

INTEREST EXPENSE                                                100           50
DEPRECIATION AND AMORTIZATION                               473,808      486,091
INCOME TAX EXPENSE (BENEFIT)
REORGANIZATION EXPENSE                                  
OTHER (INCOME) EXPENSE                                  
(GAIN) LOSS ON SALE OF ASSETS
                                                        -----------------------------------------------------

NET INCOME (LOSS)                                          (650,662)    (120,705)            0             0
                                                        =====================================================
</TABLE>

<PAGE>   8

                     STATEMENT OF SOURCES AND USES OF CASH           FORM OPR-6

CASE NAME:   MMT OF TENNESSEE, INC.
CASE NUMBER: 97-21386-CJK

                                                            MONTH ENDED: 5/31/98

<TABLE>
<CAPTION>
                                                                                                   TOTAL          TOTAL   
                                                                      PRE            POST          MONTH          MONTH   
                                                                   PETITION        PETITION        ENDED          ENDED   
                                                                   12/1-12/2      12/3-12/31      12/31/97       1/31/98  
                                                                 ---------------------------------------------------------
<S>                                                               <C>            <C>            <C>           <C>         
CASH FLOWS-OPERATING ACTIVITIES:

Net Earnings (Loss)                                                                 (306,780)      (306,780)     (839,413)

Adjustments to Reconcile Net Earnings to
Net Cash Provided (Used) by Operating Activities:
            Depreciation & Amortization                                              342,185        342,185       473,449 
            Decrease (Increase)-Accounts Receivable                                 (247,442)      (247,442)      823,497 
            Decrease (Increase)-Inventories                                          443,189        443,189        18,296 
            Decrease (Increase)-Prepaid Expenses                                    (125,481)      (125,481)       10,620 
            Decrease (Increase)-Other Assets                                               0              0       (19,427)
            Increase (Decrease)-Pre Petition Liabilities                            (392,084)      (392,084)            0 
            Increase (Decrease)-Deferred revenue                                      54,158         54,158      (232,150)
            Increase (Decrease)-Post Petition Liabilities                          1,244,624      1,244,624     1,198,997 

                                                                 ---------------------------------------------------------
NET CASH PROVIDED (USED) BY OPERATING ACTIVITIES                             0     1,012,369      1,012,369     1,433,869 
                                                                 ---------------------------------------------------------
CASH FLOWS USED IN INVESTING ACTIVITIES
            Capital Expenditures                                                     (71,352)       (71,352)     (163,988)
            Sale of Net Fixed Assets
                                                                 ---------------------------------------------------------
NET CASH PROVIDED (USED) IN INVESTING ACTIVITIES                             0       (71,352)       (71,352)     (163,988)
                                                                 ---------------------------------------------------------
CASH FLOWS FROM FINANCING ACTIVITIES:
            Increase (Decrease)-Morgens Waterfall                                          0              0             0 
            Increase (Decrease)-Shareholder Valuations                                     0              0             0 

            Purchase of Treasury Stock-Preferred Shares
                                                                 ---------------------------------------------------------
NET CASH PROVIDED (USED) IN FINANCING ACTIVITIES                             0             0              0             0 
                                                                 ---------------------------------------------------------


NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS                         0       941,017        941,017     1,269,881 

Cash and Cash Equivalents at Beginning of Period                                      66,358         66,358     1,007,375 
                                                                 ---------------------------------------------------------

Cash and Cash Equivalents at End of Period                                   0     1,007,375      1,007,375     2,277,256 
                                                                 =========================================================
</TABLE>

<TABLE>
<CAPTION>
                                                                      TOTAL         TOTAL
                                                                      MONTH         MONTH         MONTH         MONTH
                                                                      ENDED         ENDED         ENDED         ENDED
                                                                     2/28/98       3/31/98       4/30/98       5/31/98
                                                                ---------------------------------------------------------
<S>                                                               <C>           <C>           <C>              <C>    
CASH FLOWS-OPERATING ACTIVITIES:

Net Earnings (Loss)                                                (1,023,579)     (669,349)     (650,662)      (120,705)

Adjustments to Reconcile Net Earnings to
Net Cash Provided (Used) by Operating Activities:
            Depreciation & Amortization                               473,449       480,892       473,808        486,091
            Decrease (Increase)-Accounts Receivable                  (535,504)     (571,063)   (1,272,643)       356,136
            Decrease (Increase)-Inventories                            28,299      (249,222)      132,156       (262,546)
            Decrease (Increase)-Prepaid Expenses                       16,303        21,400        10,406         26,040
            Decrease (Increase)-Other Assets                           (2,194)       (2,326)            2              2
            Increase (Decrease)-Pre Petition Liabilities           (1,979,714)       (9,225)     (146,697)      (467,105)
            Increase (Decrease)-Deferred revenue                        7,780            (1)      403,162        (71,033)
            Increase (Decrease)-Post Petition Liabilities           2,173,536     1,302,470     1,326,265      1,254,213

                                                                ---------------------------------------------------------
NET CASH PROVIDED (USED) BY OPERATING ACTIVITIES                     (841,624)      303,576       275,797      1,201,093
                                                                ---------------------------------------------------------
CASH FLOWS USED IN INVESTING ACTIVITIES
            Capital Expenditures                                     (357,999)     (168,558)     (281,884)    (1,832,040)
            Sale of Net Fixed Assets
                                                                ---------------------------------------------------------
NET CASH PROVIDED (USED) IN INVESTING ACTIVITIES                     (357,999)     (168,558)     (281,884)    (1,832,040)
                                                                ---------------------------------------------------------
CASH FLOWS FROM FINANCING ACTIVITIES:
            Increase (Decrease)-Morgens Waterfall                           0             0             0              0
            Increase (Decrease)-Shareholder Valuations                      0             0             0              0

            Purchase of Treasury Stock-Preferred Shares
                                                                ---------------------------------------------------------
NET CASH PROVIDED (USED) IN FINANCING ACTIVITIES                            0             0             0              0
                                                                ---------------------------------------------------------


NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS               (1,199,623)      135,018        (6,087)      (630,947)

Cash and Cash Equivalents at Beginning of Period                    2,277,256     1,077,633     1,212,651      1,206,564
                                                                ---------------------------------------------------------

Cash and Cash Equivalents at End of Period                          1,077,633     1,212,651     1,206,564        575,617
                                                                =========================================================
</TABLE>

<PAGE>   9

                                  CHAPTER 11                       ATTACHMENT 1
                            MONTHLY OPERATING REPORT
                        MONTHLY REPORTING QUESTIONNAIRE

CASE NAME:   MMT OF TENNESSEE, INC.
CASE NUMBER: 97-21386-CJK

                                                            MONTH ENDED: 5/31/98
                                                                          Page 1
1.   PAYROLL
 
         State the amount of all executive wages paid and taxes withheld and
         paid.
<TABLE>
<CAPTION>
          NAME AND TITLE OF                                           DATE              WAGES PAID          TAXES WITHHELD
          EXECUTIVE                                                   PAID           GROSS       NET       DUE          PAID
          --------------------------                             -----------------------------------------------------------
<S>                                                                <C>           <C>           <C>        <C>          <C>
          THE FOLLOWING OFFICERS OF THIS DEBTOR ARE EMPLOYEES
          AND OFFICERS OF MOLTEN METAL TECHNOLOGY, INC.
          ("MMT"). THESE OFFICERS DO NOT RECEIVE COMPENSATION
          FROM THIS DEBTOR, BUT ARE COMPENSATED MMT, WHICH HAS
          DISCLOSED SUCH COMPENSATION IN ITS MONTHLY OPERATING
          REPORT (CASE NUMBER 97-21385-CJK).

          F. Gordon Bitter, CEO & CFO, Director
          Ethan E. Jacks, VP, General Counsel, Secretary
          Eugene Berman, Assistant Secretary
          Charles W. Shaver, President & COO, Director
          Randall Jones, Assistant Secretary
          H. W. Arrowsmith, VP Nuclear Sales & Marketing

                                                                 -----------------------------------------------------------
             TOTAL EXECUTIVE PAYROLL                                    0              0           0          0          0  
                                                                 ===========================================================
</TABLE>



2.  INSURANCE

          Is Workers' Compensation and other insurance in effect?            Yes
                                                                           -----
          Are payments current?                                              Yes
                                                                           -----
          If any policy has lapsed, been replaced or renewed, state 
          so in the schedule below. 

          Attach a copy of the new policy's binder or coverage page.
<TABLE>
<CAPTION>
                                                                                                                       DATE
                                                       COVERAGE        POLICY     EXPIRATION       PREMIUM           COVERAGE
TYPE                       CARRIER NAME                AMOUNT          NUMBER        DATE          AMOUNT           PAID THRU 
- ------------------------------------------------------------------------------------------------------------------------------
<S>                        <C>                          <C>            <C>        <C>              <C>              <C>

                  SEE ATTACHED INSURANCE EXPIRATION CERTIFICATE
</TABLE>


<PAGE>   10

                                  CHAPTER 11                       ATTACHMENT 1
                            MONTHLY OPERATING REPORT
                        MONTHLY REPORTING QUESTIONNAIRE

Case name:   MMT OF TENNESSEE, INC.
Case Number: 97-21386-CJK

                                                                          PAGE 2

3.  BANK ACCOUNTS
<TABLE>
<CAPTION>
                                         TENNESSEE     TENNESSEE      TENNESSEE
                                         OPERATING      PAYROLL        PAYROLL          TOTAL
                                       ------------------------------------------------------------
<S>                                    <C>            <C>           <C>             <C>    
BANK NAME                               U.S. TRUST     U.S. TRUST    NATIONSBANK

ACCOUNT NUMBER                          110937851      1100937869    3001270846


BEGINNING BOOK BALANCE                  1,175,210              0         28,036       1,203,246

PLUS:    Deposits-Collections of A/R    2,395,820                                     2,395,820
         Other Receipts                                                                       0
         Loan Advances                                                                        0
                                                                                              0
LESS:    Disbursements                       (600)                                         (600)
         Payroll                                                       (418,675)       (418,675)
         Returned Checks                                                                      0
         Loan Repayments                                                                      0
                                                                                              0
OTHER:   Adjustments                      178,107                                       178,107
         Transfers In (Out)            (3,190,000)                      420,000      (2,770,000)
                                                                                              0
                                      ----------------------------------------------------------

ENDING BOOK BALANCE                       558,537              0         29,361         587,898
                                      ==========================================================
</TABLE>



4.  POST PETITION PAYMENTS TO PROFESSIONALS AND ON PRE PETITION DEBTS
             List any post petition payments to professional and payments on
             Pre-petition debts in the schedule below.
<TABLE>
<CAPTION>
             PAYMENTS TO/ON                                             AMOUNT          DATE       CHECK#
             --------------------------                             -------------------------------------
<S>                                                                 <C>                <C>         <C>
             PROFESSIONALS (ATTORNEYS, 
             ACCOUNTANTS, ETC.):


                                                                         NONE

                                                                    ---------------
                                                                                 0
                                                                    ===============

             PRE-PETITION DEBTS

                                                                         NONE

                                                                    ---------------
             TOTAL PAYMENTS OF PRE-PETITION DEBTS                                0
                                                                    ===============
</TABLE>


<PAGE>   11

<TABLE>
<CAPTION>
                                                                                                                       DATE
                                                       COVERAGE        POLICY     EXPIRATION       PREMIUM           COVERAGE
TYPE                       CARRIER NAME                AMOUNT          NUMBER        DATE          AMOUNT           PAID THRU 
- ------------------------------------------------------------------------------------------------------------------------------
<S>                        <C>                        <C>             <C>          <C>             <C>               <C>      
SEE ATTACHED
</TABLE>








                I declare under penalty of perjury that the information provided
                on the attachments hereto is true and correct to the best of my
                knowledge and belief.


                Date: 5/26/98 
                      ---------


                                             Molten Metal Technology, Inc.


                                             By:/s/ F. Gordon Bitter
                                                -------------------------------
                                                F. Gordon Bitter
                                                Chief Executive Officer

                                             MMT of Tennessee, Inc.


                                             By:/s/ F. Gordon Bitter
                                                -------------------------------
                                                F. Gordon Bitter
                                                Vice President

                                             M4 Environmental, L.P.


                                             By:/s/ F. Gordon Bitter
                                                -------------------------------
                                               M4 Environmental Management, Inc.
                                               General Partner

                                             By:/s/ F. Gordon Bitter
                                                -------------------------------
                                                F. Gordon Bitter
                                                Vice President


                                             MMT Federal Holdings, Inc.


                                             By:/s/ F. Gordon Bitter
                                                -------------------------------
                                                F. Gordon Bitter
                                                Vice President


<PAGE>   12

                   MOLTEN METAL TECHNOLOGY INSURANCE SCHEDULE
                                   EXHIBIT A



<TABLE>
<CAPTION>

==========================================================================================
        CARRIER NAME & ADDRESS                            TYPE                  BROKER    
                                                                                          
==========================================================================================
                                                                                          
<S>                                     <C>                                     <C>       
Commerce & Industry Insurance Co.       General Liability                         Aon     
70 Pine Street                          Automobile Liability                      Aon     
New York, NY   10270                    Excess Liability - 1st layer              Aon     
                                                                                          
                                                                                          
New Hampshire Insurance Co.             Workers Compensation                      Aon     
70 Pine Street                          Workers Compensation - CA                 Aon     
New York NY  10270                      Employers' Liability                      Aon     
                                                                                          
                                                                                          
American International Specialty        Pollution Liability - MA/TN               Aon     
   Line Insurance Co.                   Pollution Liability - TX                  Aon     
70 Pine Street                                                                            
New York NY  10270                                                                        
                                                                                          
                                                                                          
Executive Risk Indemnity Company        Fidelity                                  Aon     
P.O. Box 91394                          Fiduciary                                 Aon     
Chicago, IL   60693                                                                       
                                                                                          
Executive Risk Indemnity Company        Directors & Officers Liability            Aon     
P.O. Box 91394                                                                            
Chicago, IL   60693                                                                       
                                                                                          
CNA Insurance Companies                 Foreign Liability                         Aon     
180 Maiden Lane                                                                           
New York, NY  10038                                                                       
                                                                                          
Allendale Mutual Insurance Co.          Property                                  Aon     
Allendale Park                                                                            
Johnston, RI  02919                                                                       
                                                                                          
American Nuclear Insurers               Nuclear All Risk Property                 J&H/M&M 
Town Center                             Nuclear Liability Facility Form - TN      J&H/M&M 
29 South Main Street                    Master Worker Certificate - TN            J&H/M&M 
West Hartford, CT 06107                                                                   
</TABLE>

<TABLE>
<CAPTION>
=============================================================================================================
        CARRIER NAME & ADDRESS        LIMITS         POLICY       EXPIRATION    PREMIUM            PAID
                                                     NUMBER          DATE                          THRU
=============================================================================================================
                                                                              
<S>                                   <C>            <C>         <C>         <C>             <C>          
Commerce & Industry Insurance Co.     $ 1,000,000    340-94-76    12/3/98     $ 53,000        Current
70 Pine Street                        $ 1,000,000    766-56-11    12/3/98     $  3,540        Current
New York, NY   10270                  $20,000,000    606-23-31    12/3/98     $ 43,185        Current
                                      excess of $1M                           
                                                                              
New Hampshire Insurance Co.           Statutory      WC588-59-75   12/3/98     $111,250        Current
70 Pine Street                        Statutory      WC588-59-77   12/3/98     $    753        Current
New York NY  10270                    $ 1,000,000    WC588-59-75   12/3/98       inclu.        Current
                                                     and -77[CA]              
                                                                              
American International Specialty      $ 3,000,000     8199951      12/3/98     $ 28,342        Current
   Line Insurance Co.                 $ 1,000,000     8199950      12/3/98     $ 16,919        Current
70 Pine Street                                                                
New York NY  10270                                                            
                                                                              
                                                                              
Executive Risk Indemnity Company      $   500,000    751-118812-9   5/9/99     $  6,000        Current
P.O. Box 91394                        $ 2,000,000    751-118834-9   5/9/99     $  6,000        Current
Chicago, IL   60693                                                           
                                                                              
Executive Risk Indemnity Company      $10,000,000   751-091628-9    1/19/99    $350,000        Current
P.O. Box 91394                                                                
Chicago, IL   60693                                                           
                                                                              
CNA Insurance Companies               $ 1,000,000   PST 00 9648288   2/1/99    $  2,000        Current
180 Maiden Lane                                                               
New York, NY  10038                                                           
                                                                              
Allendale Mutual Insurance Co.        $147,000,000      CC626       12/2/98    $170,000        Current
Allendale Park                           Blanket                              
Johnston, RI  02919                                                           
                                                                              
American Nuclear Insurers             $ 45,000,000      98262       1/1/99     $ 97,500        Current
Town Center                           $ 50,000,000     NF-0338      12/31/98   $124,215        Current
29 South Main Street                  $200,000,000     NW-0235      12/31/98   $    550      Not yet invoiced
West Hartford, CT 06107                Shared Agg.                            
</TABLE>

                                    Page 12
<PAGE>   13
                   MOLTEN METAL TECHNOLOGY INSURANCE SCHEDULE
                                   EXHIBIT A

<TABLE>
<CAPTION>

=============================================================================================================
        CARRIER NAME & ADDRESS                            TYPE                  BROKER        LIMITS         
                                                                                                             
=============================================================================================================
                                                                                                             
<S>                                     <C>                                     <C>           <C>            

                                        Nuclear Supplier's & Transp.              J&H/M&M     $ 15,000,000   
                                        Nuclear Liability Facility Form - SC      J&H/M&M     $ 10,000,000   
                                        Nuclear Foreign Supplier's & Transp.      J&H/M&M     $ 10,000,000   
                                        Master Worker Certificate - SC            J&H/M&M     $200,000,000   
                                                                                               Shared Agg.   
                                        Nuclear Facility Liability - Comm. Park   J&H/M&M     $ 10,000,000   
                                        Master Worker Certificate - Comm. Park    J&H/M&M     $200,000,000   
                                                                                                Shared Agg.  
                                                                                                             
American International Specialty        Pollution Legal and Closure/Post Closure  J&H/M&M     $ 3,000,000    
   Lines Ins. Co.                                                                             Pollution Legal
Harborside Financial Center                                                                   $ 3,400,000    
401 Plaza 3                                                                                   Closure        
Jersey City, NJ   07311
</TABLE>


<TABLE>
<CAPTION>

=============================================================================================
        CARRIER NAME & ADDRESS       POLICY       EXPIRATION    PREMIUM            PAID
                                     NUMBER          DATE                          THRU
=============================================================================================
                                                              
<S>                                  <C>         <C>         <C>             <C>          

                                       NS-0539      12/31/98   $  8,670        Current
                                       NF-0329      12/31/98   $ 13,590        Current
                                         TBD        12/31/98        TBD      Based on Foreign Sales
                                       NW-0237      12/31/98   $    550      Not yet invoiced
                                                              
                                       NF-0337      12/31/98   $ 39,568         Current
                                       NW-0234      12/31/98   $    550       Not yet invoiced
                                                              
                                                              
American International Specialty       8183013      10/15/00   $ 94,400        Current
   Lines Ins. Co.                                 Poll. Legal
Harborside Financial Center                          12/7/00    $425,000        Current
401 Plaza 3                                        Closure
Jersey City, NJ   07311
</TABLE>


Note: The premium for the Pollution Legal/Closure policy (AISLIC no. 8183013) is
billed in 5 annual installments of $19,280 (Pollution Legal) and $85,000
(Closure). To date, the first three installments are paid in full. The remaining
installments come due on the anniversary date. Thus, the remaining installments
for 12/15/98 and 1999 for Pollution and for 1/4/99 and 2000 for Closure, are
unbilled and unpaid.

                                    Page 13

<PAGE>   14

<TABLE>
<CAPTION>
======================================================================================================
        CARRIER NAME & ADDRESS                  TYPE                            CO          LIMITS    
                                                                              ENTITY                  
======================================================================================================
<S>                                     <C>                                   <C>          <C>        
Blue Cross & Blue Shield of RI          Full Coverage Medical                    MMT                  
PO Box 1057
Providence, RI
02901-1057

Delta Dental Plan                       Self Funded Dental                       MMT                  
PO Box 5-0198                                                                                         
Woburn, MA 01815-0198                                                                                 


Fortis Benefits Insurance Co.           Employee Funded-Supplemental Life        MMT                  
PO Box 27-644-1
Kansas City, MO 64180-0644


Fortis Benefits Insurance Co.           Employee Funded-Supplemental Life        MMT TN               
PO Box 27-644-1
Kansas City, MO 64180-0644


Fortis Self Funded Admin Services       Medical Stop Loss and Life Insurance     MMT                  
10159 Wayzata Boulevard                 Premiums
Minnetonka, MN 55305


Fortis Self Funded Admin Services       Medical Stop Loss and Life Insurance     MMT TN               
10159 Wayzata Boulevard                 Premiums
Minnetonka, MN 55305


Fortis Self Funded Admin Services       Self Funded Medical Claims               MMT &                
10159 Wayzata Boulevard                                                          MMT TN
Minnetonka, MN 55305


UNUM Life Insurance                     Employee Funded Long Term Disability     MMT                  
</TABLE>

<TABLE>
<CAPTION>
==============================================================================================
        CARRIER NAME & ADDRESS                  EXPIRATION       PREMIUM            PAID
                                                   DATE                            THRU
==============================================================================================
<S>                                           <C>               <C>          <C>    
Blue Cross & Blue Shield of RI                  5/1-5/31/98     $10,622        Current
PO Box 1057
Providence, RI
02901-1057

Delta Dental Plan                               5/1-5/31/98        None        Current
PO Box 5-0198                                                                  Current
Woburn, MA 01815-0198                                                          Current


Fortis Benefits Insurance Co.                   5/1-5/31/98     $ 1,968        Current
PO Box 27-644-1
Kansas City, MO 64180-0644


Fortis Benefits Insurance Co.                   5/1-5/31/98     $ 1,185        Current
PO Box 27-644-1
Kansas City, MO 64180-0644


Fortis Self Funded Admin Services               5/1-5/31/98     $10,960        Current
10159 Wayzata Boulevard                
Minnetonka, MN 55305


Fortis Self Funded Admin Services               5/1-5/31/98     $ 8,231        Current
10159 Wayzata Boulevard                
Minnetonka, MN 55305


Fortis Self Funded Admin Services               5/1-5/31/98     $50,000        Current
10159 Wayzata Boulevard                
Minnetonka, MN 55305


UNUM Life Insurance                             5/1-5/31/98     $ 1,951        Current
</TABLE>

                                 Page 14 of 15

<PAGE>   15
                   Molten Metal Technology Insurance Schedule
                                   Exhibit A

<TABLE>
<CAPTION>
======================================================================================================
        CARRIER NAME & ADDRESS                  TYPE                            CO          LIMITS    
                                                                              ENTITY                  
======================================================================================================
<S>                                     <C>                                   <C>          <C>        


PO Box 7777-W0050
Philadelphia, PA
19175-0050


UNUM Life Insurance                     Short Term Disability                    MMT                   
2211 Congress Street
Portland, ME 04122
</TABLE>

<TABLE>
<CAPTION>
==============================================================================================
        CARRIER NAME & ADDRESS                  EXPIRATION       PREMIUM            PAID
                                                   DATE                            THRU
==============================================================================================
<S>                                           <C>               <C>          <C>    

PO Box 7777-W0050
Philadelphia, PA
19175-0050


UNUM Life Insurance                          5/1-5/31/98        $ 2,110        Current
2211 Congress Street
Portland, ME 04122
</TABLE>

                                 Page 15 of 15

<PAGE>   1
                                                                    EXHIBIT 99.4
                         UNITED STATES BANKRUPTCY COURT
                            DISTRICT OF MASSACHUSETTS
                                EASTERN DIVISION

IN RE:  MMT FEDERAL HOLDINGS, INC.                    CASE NO.: 97-21387-CJK 
DEBTOR                                               JUDGE:   CAROL J. KENNER 
                                    
                                                                 CHAPTER 11

MONTHLY OPERATING REPORT FOR MONTH ENDING:                              5/31/98
                                                                        

COMES NOW, MMT FEDERAL HOLDINGS, INC. , Debtor in Possession, and hereby its
Monthly Operating Report for the period commencing 5/1/98 and ending 5/31/98 as
shown by the report and exhibits consisting of 10 pages and containing the
following, as indicated:

                  X       Monthly Reporting Questionnaire (Attachment 1)
            -----------

                  X       Comparative Balance Sheets (Forms OPR-1 and OPR-2)
            -----------

                  X       Summary of Accounts Receivable (Form OPR-3)
            -----------

                  X       Schedule of Post-Petition Liabilities (Form OPR-4)
            -----------

                  X       Income Statement (Form OPR-5)
            -----------

                  X       Statement of Sources and Uses of Cash (Form OPR-6)
            -----------


I declare under penalty of perjury that this report and all attachments are true
and correct to the best of my knowledge and belief.


Date:  6/26/98                DEBTOR-IN-POSSESSION
       ------
                              By:/s/ F. Gordon Bitter
                                 --------------------------------
                              Name & Title:    F. Gordon Bitter, Vice President
                                               MMT Federal Holdings, Inc.
                                               421 Currant Road
                                               Fall River, MA  02720
                                               Telephone:    508-324-6497


<PAGE>   2



                         UNITED STATES BANKRUPTCY COURT
                        EASTERN DISTRICT OF MASSACHUSETTS
                                                                
                                                                        
IN RE: MMT FEDERAL HOLDINGS, INC.                      CASE NO.:  97-21387-CJK
            DEBTOR                                    JUDGE:   CAROL J. KENNER
                                                                               
                                                                      CHAPTER 11
NOTE TO THE MONTHLY OPERATING REPORT:                  


         Consistent with the Debtor's historical accounting practices, this
         operating report accounts for all cash transfers among the Debtor and
         its affiliates and allocates some, but not all, of the expenses borne
         by one affiliate for the benefit of another or the others. In the
         absence of a decision for substantive consolidation, the Debtor will
         develop an appropriate allocation of expenses among the affiliated
         entities.


<PAGE>   3


                      COMPARATIVE BALANCE SHEETS                    FORM OPR-1

CASE NAME:         MMT FEDERAL HOLDINGS, INC.
CASE NUMBER:      97-21387-CJK
                                                            MONTH ENDED: 5/31/98
                                                                    
<TABLE>
<CAPTION>
                                                                 FILING         MONTH          MONTH         MONTH      
                                                                  DATE          ENDED          ENDED         ENDED      
                                                                 12/3/97       12/31/97       1/31/98       2/28/98     
                                                              ----------------------------------------------------------
<S>                                                            <C>             <C>           <C>           <C>          
ASSETS

CURRENT ASSETS

Cash                                                                    500            500           500           500  
Other negotiable instruments (i.e.  CD's,
             Treasury Bills, Etc.)
Accounts Receivable-Trade, Net (OPR-3)
Less:   allowance for doubtful accounts
Accounts Receivable-Other
Inventory, at cost
Prepaid expenses
Deposits
Other:
             Stock & interests in:
             M4 Environmental Management, Inc. (100%)               Unknown        Unknown       Unknown       Unknown  
             Lockheed Martin Chemical Demilitarization              Unknown        Unknown       Unknown       Unknown  
                  LLC (50% owned, 50% owned by
                  Lockheed Martin)

                                                              ----------------------------------------------------------
TOTAL CURRENT ASSETS                                                    500            500           500           500  
                                                              ----------------------------------------------------------

PROPERTY, PLANT AND EQUIPMENT, AT COST
Less:  Accumulated Depreciation

                                                              ----------------------------------------------------------
NET PROPERTY, PLANT AND EQUIPMENT                                         0              0             0             0  
                                                              ----------------------------------------------------------

OTHER ASSETS (ITEMIZED IF VALUE EXCEEDS
             10% OF "TOTAL ASSETS")
             Intangible Assets                                                                                          
             Less:  Accumulated Amortization

                                                              ----------------------------------------------------------
TOTAL OTHER ASSETS                                                        0              0             0             0  
                                                              ----------------------------------------------------------

TOTAL ASSETS                                                            500            500           500           500  
                                                              ==========================================================
</TABLE>

<TABLE>
<CAPTION>
                                                               MONTH         MONTH          MONTH          MONTH
                                                               ENDED         ENDED          ENDED          ENDED
                                                              3/31/98       4/30/98        5/31/98
                                                             ---------------------------------------------------------
<S>                                                          <C>            <C>           <C>            <C>        
ASSETS

CURRENT ASSETS

Cash                                                                 500            500           500
Other negotiable instruments (i.e.  CD's,
             Treasury Bills, Etc.)
Accounts Receivable-Trade, Net (OPR-3)
Less:   allowance for doubtful accounts
Accounts Receivable-Other
Inventory, at cost
Prepaid expenses
Deposits
Other:
             Stock & interests in:
             M4 Environmental Management, Inc. (100%)            Unknown        Unknown       Unknown
             Lockheed Martin Chemical Demilitarization           Unknown        Unknown       Unknown
                  LLC (50% owned, 50% owned by
                  Lockheed Martin)

                                                             ---------------------------------------------------------
TOTAL CURRENT ASSETS                                                 500            500           500               0
                                                             ---------------------------------------------------------

PROPERTY, PLANT AND EQUIPMENT, AT COST
Less:  Accumulated Depreciation

                                                             ---------------------------------------------------------
NET PROPERTY, PLANT AND EQUIPMENT                                      0              0             0               0
                                                             ---------------------------------------------------------

OTHER ASSETS (ITEMIZED IF VALUE EXCEEDS
             10% OF "TOTAL ASSETS")
             Intangible Assets                                                        0
             Less:  Accumulated Amortization

                                                             ---------------------------------------------------------
TOTAL OTHER ASSETS                                                     0              0             0               0
                                                             ---------------------------------------------------------

TOTAL ASSETS                                                         500            500           500               0
                                                             =========================================================
</TABLE>

<PAGE>   4


                      COMPARATIVE BALANCE SHEETS                    FORM OPR-2


CASE NAME:    MMT FEDERAL HOLDINGS, INC.
CASE NUMBER:  97-21387-CJK

                                                            MONTH ENDED: 5/31/98
<TABLE>
<CAPTION>
                                                               FILING          MONTH           MONTH           MONTH       
                                                                DATE           ENDED           ENDED           ENDED       
                                                               12/3/97        12/31/97        1/31/98         2/28/98      
                                                           ------------------------------------------------------------------
<S>                                                         <C>             <C>              <C>             <C>           
LIABILITIES                                                                         

POST PETITION LIABILITIES

Secured Debt (See Form OPR-4)
Unsecured Debt-Intercompany Obligations due to cash
             transfers in Post Petition Operations
Unsecured Debt-Obligations incurred in Post Petition
             Operations (See Form OPR-4)

                                                           ----------------------------------------------------------------
TOTAL POST PETITION LIABILITIES                                    0              0               0               0        

PRE PETITION INTERCOMPANY LIABILITIES
DEFERRED REVENUE/DEFERRED INCOME
TOTAL OTHER PRE PETITION LIABILITIES
                                                           ----------------------------------------------------------------

TOTAL LIABILITIES                                                  0              0               0               0        
                                                           ----------------------------------------------------------------

SHAREHOLDERS' EQUITY (DEFICIT)

Preferred Stock
Common Stock                                                      10             10              10              10        
Paid in Capital                                                  990            990             990             990        
Valuation Allowance                                             (500)          (500)           (500)           (500)       
Dividends Paid
Treasury Stock
Deferred Compensation
Retained Earnings
             Through Filing Date
             Post Filing Date

                                                           ----------------------------------------------------------------
TOTAL SHAREHOLDERS' EQUITY (DEFICIT)                             500            500             500             500        
                                                           ----------------------------------------------------------------

TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY                       500            500             500             500        
                                                           ================================================================
</TABLE>

<TABLE>
<CAPTION>
                                                             MONTH          MONTH           MONTH           MONTH
                                                             ENDED          ENDED           ENDED           ENDED
                                                            3/31/98        4/30/98         5/31/98
                                                          -------------------------------------------------------------
<S>                                                        <C>            <C>             <C>             <C>
LIABILITIES                                               

POST PETITION LIABILITIES

Secured Debt (See Form OPR-4)
Unsecured Debt-Intercompany Obligations due to cash
             transfers in Post Petition Operations
Unsecured Debt-Obligations incurred in Post Petition
             Operations (See Form OPR-4)

                                                          -------------------------------------------------------------
TOTAL POST PETITION LIABILITIES                                 0              0               0               0

PRE PETITION INTERCOMPANY LIABILITIES
DEFERRED REVENUE/DEFERRED INCOME
TOTAL OTHER PRE PETITION LIABILITIES
                                                          -------------------------------------------------------------

TOTAL LIABILITIES                                               0              0               0               0
                                                          -------------------------------------------------------------

SHAREHOLDERS' EQUITY (DEFICIT)

Preferred Stock
Common Stock                                                   10             10              10
Paid in Capital                                               990            990             990
Valuation Allowance                                          (500)          (500)           (500)
Dividends Paid
Treasury Stock
Deferred Compensation
Retained Earnings
             Through Filing Date
             Post Filing Date

                                                          -------------------------------------------------------------
TOTAL SHAREHOLDERS' EQUITY (DEFICIT)                          500            500             500               0
                                                          -------------------------------------------------------------

TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY                    500            500             500               0
                                                          =============================================================
</TABLE>

<PAGE>   5


                    SUMMARY OF ACCOUNTS RECEIVABLE                  FORM OPR-3

CASE NAME:    MMT FEDERAL HOLDINGS, INC.
CASE NUMBER:  97-21387-CJK
                                                            MONTH ENDED: 5/31/98
<TABLE>
<CAPTION>
                                                                            0-30         31-60         61-90     OVER
                                                              TOTAL         DAYS          DAYS         DAYS     90 DAYS

                                                           --------------------------------------------------------------
<S>                                                          <C>           <C>          <C>           <C>       <C>
DATE OF FILING:   12/3/97                                      0
                  Allowance for doubtful accounts              0
                                                           =============================================================
                                                               0             0            0             0             0
                                                           =============================================================

MONTH:            12/31/97                                     0
                  Allowance for doubtful accounts              0
                                                           =============================================================
                                                               0             0            0             0             0
                                                           =============================================================

MONTH:            1/31/98                                      0
                  Allowance for doubtful accounts              0
                                                           =============================================================
                                                               0             0            0             0             0
                                                           =============================================================

MONTH:            2/28/98                                      0
                  Allowance for doubtful accounts              0
                                                           =============================================================
                                                               0             0            0             0             0
                                                           =============================================================

MONTH:            3/31/98                                      0
                  Allowance for doubtful accounts              0
                                                           =============================================================
                                                               0             0            0             0             0
                                                           =============================================================

MONTH:            4/30/98                                      0
                  Allowance for doubtful accounts              0
                                                           =============================================================
                                                               0             0            0             0             0
                                                           =============================================================

MONTH:            5/31/98
                  Allowance for doubtful accounts
                                                           =============================================================
                                                               0             0            0             0             0
                                                           =============================================================
</TABLE>


<PAGE>   6


                SCHEDULE OF POST PETITION LIABILITIES               FORM OPR-4

CASE NAME:    MMT FEDERAL HOLDINGS, INC.
CASE NUMBER:  97-21387-CJK
                                                            MONTH ENDED: 5/31/98
              

<TABLE>
<CAPTION>
                                                                      DATE       DATE   TOTAL     0-30     31-60    61-90     OVER
                                                                    INCURRED     DUE     DUE      DAYS      DAYS    DAYS    90 DAYS
                                                                -------------------------------------------------------------------
<S>                                                             <C>           <C>      <C>        <C>      <C>       <C>     <C>   
TAXES PAYABLE

            Federal Income Taxes                                                         NONE
            FICA-Employer's Share                                                        NONE
            FICA-Employee's Share                                                        NONE
            Unemployment Tax                                                             NONE
            State Sales & Use Tax                                                        NONE
            State            Tax                                                         NONE
            Personal Property Tax                                                        NONE

                                                                                       --------------------------------------------
TOTAL TAXES PAYABLE                                                                       0         0         0       0         0
                                                                                       --------------------------------------------

POST PETITION SECURED DEBT
DIP FINANCING

ACCRUED INTEREST PAYABLE

                                                                                       --------------------------------------------
TOTAL POST PETITION SECURED DEBT                                                          0         0         0       0         0
                                                                                       --------------------------------------------

POST PETITION UNSECURED DEBT
TRADE ACCOUNTS PAYABLE & OTHER:
            Trade Accounts Payable (see attached schedules)
            Payroll withholdings
            Accrued Payroll
            Accrued expenses

                                                                                       --------------------------------------------
TOTAL TRADE ACCOUNTS PAYABLE & OTHER                                                      0         0         0       0         0
                                                                                       --------------------------------------------

TOTAL ALL POST PETITION LIABILITIES                                                       0         0         0       0         0
                                                                                       ============================================
</TABLE>


<PAGE>   7


                           INCOME STATEMENT                          FORM OPR-5

CASE NAME:    MMT FEDERAL HOLDINGS,
CASE NUMBER:  97-21387-CJK
                                                            MONTH ENDED: 5/31/98
              
<TABLE>
<CAPTION>
                                                             PRE          POST         MONTH        MONTH        MONTH  
                                                          PETITION      PETITION       ENDED        ENDED        ENDED  
                                                           12/3/97      12/31/97      1/31/98      2/28/98      3/31/98 
                                                        ----------------------------------------------------------------
<S>                                                     <C>             <C>           <C>          <C>          <C>     
NET REVENUE (INCOME)
                                                        ----------------------------------------------------------------
COST OF GOODS SOLD
            Salaries & wages
            Less: Salaries & wages capitalized in 
                  fixed assets 
            Benefits 
            Bad debt expense 
            Cost of goods sold 
            Decontamination & disposal 
            Disposal costs-secondary wastes 
            Financing costs 
            Insurance
            Legal services
            Materials 
            Office expense & supplies 
            Other
            Outside services
            Professional services 
            Rent-equipment 
            Rent-office/buildings
            Supplies-processing 
            Taxes 
            Telephone 
            Transportation 
            Travel & entertainment 
            Utilities

                                                        ----------------------------------------------------------------
TOTAL COST OF GOODS SOLD                                     0            0             0            0           0
                                                        ----------------------------------------------------------------

INCOME BEFORE INTEREST, DEPRECIATION,
            TAXES, OR EXTRAORDINARY EXPENSES                 0            0             0            0           0
                                                        ----------------------------------------------------------------

INTEREST EXPENSE
DEPRECIATION AND AMORTIZATION
INCOME TAX EXPENSE (BENEFIT)
REORGANIZATION EXPENSE
OTHER (INCOME) EXPENSE
(GAIN) LOSS ON SALE OF ASSETS
                                                        ----------------------------------------------------------------

NET INCOME (LOSS)                                           NONE          NONE         NONE          NONE         NONE  
                                                        ================================================================
</TABLE>


<TABLE>
<CAPTION>
                                                              MONTH        MONTH         MONTH         MONTH
                                                              ENDED        ENDED         ENDED         ENDED
                                                             4/30/98      5/31/98
                                                       ----------------------------------------------------------
<S>                                                          <C>          <C>           <C>           <C>
NET REVENUE (INCOME)
                                                       ----------------------------------------------------------
COST OF GOODS SOLD
            Salaries & wages
            Less: Salaries & wages capitalized in 
                  fixed assets 
            Benefits 
            Bad debt expense 
            Cost of goods sold 
            Decontamination & disposal 
            Disposal costs-secondary wastes 
            Financing costs 
            Insurance
            Legal services
            Materials 
            Office expense & supplies 
            Other
            Outside services
            Professional services 
            Rent-equipment 
            Rent-office/buildings
            Supplies-processing 
            Taxes 
            Telephone 
            Transportation 
            Travel & entertainment 
            Utilities

                                                       ----------------------------------------------------------
TOTAL COST OF GOODS SOLD                                       0            0             0             0
                                                       ----------------------------------------------------------

INCOME BEFORE INTEREST, DEPRECIATION,
            TAXES, OR EXTRAORDINARY EXPENSES                   0            0             0             0
                                                       ----------------------------------------------------------

INTEREST EXPENSE
DEPRECIATION AND AMORTIZATION
INCOME TAX EXPENSE (BENEFIT)
REORGANIZATION EXPENSE
OTHER (INCOME) EXPENSE
(GAIN) LOSS ON SALE OF ASSETS
                                                       ----------------------------------------------------------

NET INCOME (LOSS)                                            NONE          NONE           0             0
                                                       ==========================================================
</TABLE>


<PAGE>   8


                STATEMENT OF SOURCES AND USES OF CASH               FORM OPR-6

CASE NAME:    MMT FEDERAL HOLDINGS, INC.
CASE NUMBER:  97-21387-CJK
                                                            MONTH ENDED: 5/31/98
              
<TABLE>
<CAPTION>
                                                                                               TOTAL
                                                                    PRE          POST          MONTH        MONTH     
                                                                  PETITION     PETITION        ENDED        ENDED     
                                                                 12/1-12/2    12/3-12/31     12/31/97      1/31/98    
                                                                ------------------------------------------------------
<S>                                                               <C>           <C>           <C>          <C>        
CASH FLOWS-OPERATING ACTIVITIES:

Net Earnings (Loss)                                                               NONE          NONE         NONE     

Adjustments to Reconcile Net Earnings to
Net Cash Provided (Used) by Operating Activities:
            Depreciation & Amortization                                              0             0            0     
            Decrease (Increase)-Accounts Receivable                                  0             0            0     
            Decrease (Increase)-Inventories                                          0             0            0     
            Decrease (Increase)-Prepaid Expenses                                     0             0            0     
            Decrease (Increase)-Other Assets                                         0             0            0     
            Increase (Decrease)-Pre Petition Liabilities                             0             0            0     
            Increase (Decrease)-Post Petition Liabilities                            0             0            0     

                                                                ------------------------------------------------------
NET CASH PROVIDED (USED) BY OPERATING ACTIVITIES                          0          0             0            0     
                                                                ------------------------------------------------------


CASH FLOWS USED IN INVESTING ACTIVITIES
            Capital Expenditures                                                     0             0            0     
            Sale of Net Fixed Assets
                                                                ------------------------------------------------------
NET CASH PROVIDED (USED) IN INVESTING ACTIVITIES                          0          0             0            0     
                                                                ------------------------------------------------------


CASH FLOWS FROM FINANCING ACTIVITIES:
            Increase (Decrease)-Morgens Waterfall                                    0             0            0     
            Increase (Decrease)-Shareholder Valuations                               0             0            0     

            Purchase of Treasury Stock-Preferred Shares

                                                                ------------------------------------------------------
NET CASH PROVIDED (USED) IN FINANCING ACTIVITIES                          0          0             0            0     
                                                                ------------------------------------------------------


NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS                      0          0             0            0     

Cash and Cash Equivalents at Beginning of Period                                   500           500          500     
                                                                ------------------------------------------------------


Cash and Cash Equivalents at End of Period                                0        500           500          500     
                                                                ======================================================
</TABLE>


<TABLE>
<CAPTION>
                                                             
                                                                 MONTH         MONTH         MONTH         MONTH
                                                                 ENDED         ENDED         ENDED         ENDED
                                                                2/28/98       3/31/98       4/30/98       5/31/98
                                                             --------------------------------------------------------
<S>                                                             <C>           <C>           <C>           <C>
CASH FLOWS-OPERATING ACTIVITIES:

Net Earnings (Loss)                                               NONE          NONE          NONE          NONE

Adjustments to Reconcile Net Earnings to
Net Cash Provided (Used) by Operating Activities:
            Depreciation & Amortization                              0             0             0             0
            Decrease (Increase)-Accounts Receivable                  0             0             0             0
            Decrease (Increase)-Inventories                          0             0             0             0
            Decrease (Increase)-Prepaid Expenses                     0             0             0             0
            Decrease (Increase)-Other Assets                         0             0             0             0
            Increase (Decrease)-Pre Petition Liabilities             0             0             0             0
            Increase (Decrease)-Post Petition Liabilities            0             0             0             0

                                                             ----------------------------------------------------
NET CASH PROVIDED (USED) BY OPERATING ACTIVITIES                     0             0             0             0
                                                             ----------------------------------------------------


CASH FLOWS USED IN INVESTING ACTIVITIES
            Capital Expenditures                                     0             0             0             0
            Sale of Net Fixed Assets
                                                             ----------------------------------------------------
NET CASH PROVIDED (USED) IN INVESTING ACTIVITIES                     0             0             0             0
                                                             ----------------------------------------------------


CASH FLOWS FROM FINANCING ACTIVITIES:
            Increase (Decrease)-Morgens Waterfall                    0             0             0             0
            Increase (Decrease)-Shareholder Valuations               0             0             0             0

            Purchase of Treasury Stock-Preferred Shares

                                                             ----------------------------------------------------
NET CASH PROVIDED (USED) IN FINANCING ACTIVITIES                     0             0             0             0
                                                             ----------------------------------------------------


NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS                 0             0             0             0

Cash and Cash Equivalents at Beginning of Period                   500           500           500           500
                                                             ----------------------------------------------------


Cash and Cash Equivalents at End of Period                         500           500           500           500
                                                             ====================================================
</TABLE>


<PAGE>   9


                                   CHAPTER 11                     ATTACHMENT 1
                            MONTHLY OPERATING REPORT
                         MONTHLY REPORTING QUESTIONNAIRE

Case Name:   MMT FEDERAL HOLDINGS, INC.
Case Number: 97-21387-CJK                               MONTH ENDED:   5/31/98
                                                                     


                                                                          PAGE 1


1.   PAYROLL
             
         State the amount of all executive wages paid and taxes withheld and
         paid.
<TABLE>
<CAPTION>

       NAME AND TITLE OF                                         DATE                WAGES PAID                TAXES WITHHELD
       EXECUTIVE                                                 PAID          GROSS          NET          DUE           PAID
       --------------------------                           -----------------------------------------------------------------------
<S>                                                          <C>               <C>          <C>           <C>            <C>
                                                          
       THE FOLLOWING OFFICERS OF THIS DEBTOR ARE
       EMPLOYEES AND OFFICERS OF MOLTEN METAL 
       TECHNOLOGY, INC. ("MMT"). THESE OFFICERS DO
       NOT RECEIVE COMPENSATION FROM THIS DEBTOR,
       BUT ARE COMPENSATED MMT, WHICH HAS DISCLOSED
       SUCH COMPENSATION IN ITS MONTHLY OPERATING
       REPORT (CASE NUMBER 97-21385-CJK).

       F. Gordon Bitter, CEO & CFO, Director
       Ethan E. Jacks, VP, General Counsel, Secretary
       Eugene Berman, Assistant Secretary
       Charles W. Shaver, President & COO, Director
       Randall Jones, Assistant Secretary


                                                                           --------------------------------------------------------
       TOTAL EXECUTIVE PAYROLL                                                    0             0            0              0
                                                                          ========================================================
</TABLE>





2.  INSURANCE
       Is Workers' Compensation and other insurance in effect?            N/A
                                                                          ----
       Are payments current?
                                                                          ----
       If any policy has lapsed, been replaced or renewed, state so in the
       schedule below. Attach a copy of the new policy's binder or coverage
       page.
<TABLE>
<CAPTION>
                                                                                                                       DATE
                                                             COVERAGE       POLICY      EXPIRATION     PREMIUM       COVERAGE
TYPE                       CARRIER NAME                       AMOUNT        NUMBER         DATE         AMOUNT      PAID THRU
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                        <C>                              <C>             <C>         <C>            <C>          <C>

SEE ATTACHED INSURANCE 
EXPIRATION CERTIFICATE

</TABLE>


<PAGE>   10
                                   CHAPTER 11                     ATTACHMENT 1
                            MONTHLY OPERATING REPORT
                         MONTHLY REPORTING QUESTIONNAIRE

Case Name:   MMT FEDERAL HOLDINGS, INC.
Case Number: 97-21387-CJK                              

                                                                          PAGE 2

3.  BANK ACCOUNTS
<TABLE>
<CAPTION>

                                                                  MMT FED
                                                                 OPERATING                    TOTAL
                                                               --------------             ---------------
<S>                                                            <C>                         <C>
BANK NAME                                                       U.S. TRUST

ACCOUNT NUMBER                                                  002239244-1

BEGINNING BOOK BALANCE                                                   500                         500

PLUS:       Deposits-Collections of A/R
            Other Receipts
            Loan Advances

LESS:       Disbursements
            Payroll
            Returned Checks
            Loan Repayments

OTHER:      Adjustments
            Transfers In (Out)
                                                               --------------             ---------------
ENDING BOOK BALANCE                                                      500                         500
                                                               ==============             ===============
</TABLE>



4.  POST PETITION PAYMENTS TO PROFESSIONALS AND ON PRE PETITION DEBTS
            List any post petition payments to professional and payments on
            Pre-petition debts in the schedule below.
<TABLE>
<CAPTION>

            Payments To/On                              Amount         Date         Check #
            --------------------------              -------------------------------------------
<S>                                                  <C>               <C>         <C>
            PROFESSIONALS (ATTORNEYS, 
            ACCOUNTANTS, ETC.):
                                                         NONE

                                                    ---------------
                                                                 0
                                                    ===============

            PRE-PETITION DEBTS

                                                         NONE

                                                    ---------------
            TOTAL PAYMENTS OF PRE-PETITION DEBTS                 0
                                                    ---------------
</TABLE>


<PAGE>   11
                         INSURANCE EXPIRATION STATEMENT

<TABLE>
<CAPTION>
                                                     INSURANCE     COVERAGE       POLICY    EXPIRATION    PREMIUM      COVERAGE
CARRIER NAME AND ADDRESS              TYPE             AGENT        AMOUNT        NUMBER       DATE        AMOUNT     PAID THRU
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>              <C>            <C>          <C>        <C>           <C>         <C>        

SEE ATTACHED
</TABLE>


         I declare under penalty of perjury that the information provided on the
         attachments hereto is true and correct to the best of my knowledge and
         belief.


         Date: 5/26/98
               -------




                                             Molten Metal Technology, Inc.


                                             By:/s/ F. Gordon Bitter
                                               ------------------------------
                                               F. Gordon Bitter
                                               Chief Executive Officer

                                             MMT of Tennessee, Inc.

                                             By:/s/ F. Gordon Bitter
                                               ------------------------------
                                               F. Gordon Bitter
                                               Vice President

                                             M4 Environmental, L.P..

                                             By:/s/ F. Gordon Bitter
                                               ------------------------------
                                               M4 Environmental Management, Inc.
                                               General Partner
                                        
                                             By:/s/ F. Gordon Bitter
                                               ------------------------------
                                               F. Gordon Bitter
                                               Vice President

                                             MMT Federal Holdings, Inc.


                                             By:/s/ F. Gordon Bitter
                                               ------------------------------
                                               F. Gordon Bitter
                                               Vice President

<PAGE>   12

<TABLE>
<CAPTION>
============================================================================================================
        CARRIER NAME & ADDRESS                           TYPE                     BROKER        LIMITS      
                                                                                                            
============================================================================================================
<S>                                     <C>                                    <C>           <C>            
Commerce & Industry Insurance Co.       General Liability                       Aon            $  1,000,000 
70 Pine Street                          Automobile Liability                    Aon            $  1,000,000 
New York, NY   10270                    Excess Liability - 1st layer            Aon            $ 20,000,000 
                                                                                             excess of $1M

New Hampshire Insurance Co.             Workers Compensation                    Aon            Statutory    
70 Pine Street                          Workers Compensation - CA               Aon            Statutory    
New York NY  10270                      Employers' Liability                    Aon            $  1,000,000 
                                                                                                            

American International Specialty Lines  Pollution Liability - MA/TN             Aon            $  3,000,000 
   Insurance Co.                        Pollution Liability - TX                Aon            $  1,000,000 
70 Pine Street
New York NY  10270


Executive Risk Indemnity Company        Fidelity                                Aon             $   500,000 
P.O. Box 91394                          Fiduciary                               Aon             $ 2,000,000 
Chicago, IL   60693

Executive Risk Indemnity Company        Directors & Officers Liability          Aon             $10,000,000 
P.O. Box 91394
Chicago, IL   60693

CNA Insurance Companies                 Foreign Liability                       Aon             $ 1,000,000 
180 Maiden Lane
New York, NY  10038

Allendale Mutual Insurance Co.          Property                                Aon             $147,000,000
Allendale Park                                                                                  Blanket
Johnston, RI  02919

American Nuclear Insurers               Nuclear All Risk Property               J&H/M&M         $ 45,000,000
Town Center                             Nuclear Liability Facility Form - TN    J&H/M&M         $ 50,000,000
29 South Main Street                    Master Worker Certificate - TN          J&H/M&M         $200,000,000
West Hartford, CT 06107                                                                           Shared Agg.
</TABLE>


<TABLE>
<CAPTION>
==============================================================================================================
        CARRIER NAME & ADDRESS                     POLICY      EXPIRATION    PREMIUM            PAID
                                                   NUMBER         DATE                          THRU
==============================================================================================================
<S>                                              <C>           <C>       <C>       <C>             
Commerce & Industry Insurance Co.                340-94-76               12/3/98   $ 53,000        Current
70 Pine Street                                   766-56-11               12/3/98   $  3,540        Current
New York, NY   10270                             606-23-31               12/3/98   $ 43,185        Current
                                               
                                               
New Hampshire Insurance Co.                     WC588-59-75              12/3/98   $111,250        Current
70 Pine Street                                  WC588-59-77              12/3/98   $    753        Current
New York NY  10270                              WC588-59-75              12/3/98    inclu.         Current
                                                and -77[CA]
                                               
American International Specialty Line             8199951                12/3/98    $ 28,342       Current
   Insurance Co.                                  8199950                12/3/98    $ 16,919       Current
70 Pine Street                                 
New York NY  10270                             
                                               
                                               
Executive Risk Indemnity Company               751-118812-98              5/9/99    $  6,000        Current
P.O. Box 91394                                 751-118834-98              5/9/99    $  6,000        Current
Chicago, IL   60693                            
                                               
Executive Risk Indemnity Company               751-091628-98              1/19/99   $350,000        Current
P.O. Box 91394                                 
Chicago, IL   60693                            
                                               
CNA Insurance Companies                        PST 00 9648288             2/1/99    $  2,000        Current
180 Maiden Lane                                
New York, NY  10038                            
                                               
Allendale Mutual Insurance Co.                      CC626                 12/2/98    $170,000        Current
Allendale Park                                 
Johnston, RI  02919                            
                                               
American Nuclear Insurers                           98262                  1/1/99    $ 97,500        Current
Town Center                                        NF-0338                12/31/98   $124,215        Current
29 South Main Street                               NW-0235                12/31/98   $    550      Not yet invoiced
West Hartford, CT 06107              
</TABLE>

                                    Page 12

<PAGE>   13

<TABLE>
<CAPTION>
=================================================================================================================
        CARRIER NAME & ADDRESS                           TYPE                         BROKER        LIMITS       
                                                                                                                 
=================================================================================================================
<S>                                     <C>                                        <C>           <C>             
                                                                                   
                                        Nuclear Supplier's & Transp.                J&H/M&M         $ 15,000,000 
                                        Nuclear Liability Facility Form - SC        J&H/M&M         $ 10,000,000 
                                        Nuclear Foreign Supplier's & Transp.        J&H/M&M         $ 10,000,000 
                                        Master Worker Certificate - SC              J&H/M&M         $200,000,000 
                                                                                                     Shared Agg.
                                        Nuclear Facility Liability - Comm. Park     J&H/M&M         $ 10,000,000 
                                        Master Worker Certificate - Comm. Park      J&H/M&M         $200,000,000 
                                                                                                  Shared Agg.
                                                                                   
American International Specialty        Pollution Legal and Closure/Post Closure    J&H/M&M          $3,000,000  
   Lines Ins. Co.                                                                               Pollution Legal  
Harborside Financial Center                                                                          $3,400,000  
401 Plaza 3                                                                                     Closure          
Jersey City, NJ   07311                                   
</TABLE>                                                  

<TABLE>
<CAPTION>
==============================================================================================================
        CARRIER NAME & ADDRESS          POLICY      EXPIRATION    PREMIUM            PAID
                                        NUMBER         DATE                          THRU
==============================================================================================================
<S>                                   <C>           <C>       <C>       <C>             

                                        NS-0539                12/31/98   $  8,670        Current
                                        NF-0329                12/31/98   $ 13,590        Current
                                          TBD                  12/31/98        TBD      Based on Foreign Sales
                                        NW-0237                12/31/98   $    550      Not yet invoiced
                                     
                                        NF-0337                12/31/98   $ 39,568        Current
                                        NW-0234                12/31/98   $    550      Not yet invoiced
                                     

American International Specialty       8183013                10/15/00  $94,400        Current
   Lines Ins. Co.                                  Poll. Legal
Harborside Financial Center                                   12/7/00   $425,000        Current
401 Plaza 3                                        Closure
Jersey City, NJ   07311
</TABLE>


Note: The premium for the Pollution Legal/Closure policy (AISLIC no. 8183013) is
billed in 5 annual installments of $19,280 (Pollution Legal) and $85,000
(Closure). To date, the first three installments are paid in full. The remaining
installments come due on the anniversary date. Thus, the remaining installments
for 12/15/98 and 1999 for Pollution and for 1/4/99 and 2000 for Closure, are
unbilled and unpaid.

                                    Page 13

<PAGE>   14
                   MOLTEN METAL TECHNOLOGY INSURANCE SCHEDULE

                                   EXHIBIT A


<TABLE>
<CAPTION>
============================================================================================================
        CARRIER NAME & ADDRESS                            TYPE                       CO          LIMITS   
                                                                                   ENTITY                 
============================================================================================================
<S>                                     <C>                                     <C>             <C>       
Blue Cross & Blue Shield of RI          Full Coverage Medical                    MMT                      
PO Box 1057
Providence, RI
02901-1057

Delta Dental Plan                       Self Funded Dental                       MMT                      
PO Box 5-0198                                                                                             
Woburn, MA 01815-0198                                                                                     


Fortis Benefits Insurance Co.           Employee Funded-Supplemental Life        MMT                      
PO Box 27-644-1
Kansas City, MO 64180-0644


Fortis Benefits Insurance Co.           Employee Funded-Supplemental Life        MMT TN                   
PO Box 27-644-1
Kansas City, MO 64180-0644


Fortis Self Funded Admin Services       Medical Stop Loss and Life Insurance     MMT                      
10159 Wayzata Boulevard                 Premiums
Minnetonka, MN 55305


Fortis Self Funded Admin Services       Medical Stop Loss and Life Insurance     MMT TN                   
10159 Wayzata Boulevard                 Premiums
Minnetonka, MN 55305


Fortis Self Funded Admin Services       Self Funded Medical Claims               MMT &                    
10159 Wayzata Boulevard                                                          MMT TN
Minnetonka, MN 55305


UNUM Life Insurance                     Employee Funded Long Term Disability     MMT                      
</TABLE>

<TABLE>
<CAPTION>
=========================================================================================
        CARRIER NAME & ADDRESS           EXPIRATION     PREMIUM            PAID
                                            DATE                           THRU
=========================================================================================
<S>                                    <C>              <C>               <C>    
Blue Cross & Blue Shield of RI          5/1-5/31/98       $  10,622        Current
PO Box 1057
Providence, RI
02901-1057

Delta Dental Plan                       5/1-5/31/98           None        Current
PO Box 5-0198                                                             Current
Woburn, MA 01815-0198                                                     Current


Fortis Benefits Insurance Co.           5/1-5/31/98      $    1,968        Current
PO Box 27-644-1
Kansas City, MO 64180-0644


Fortis Benefits Insurance Co.           5/1-5/31/98       $   1,185        Current
PO Box 27-644-1
Kansas City, MO 64180-0644


Fortis Self Funded Admin Services       5/1-5/31/98       $  10,960        Current
10159 Wayzata Boulevard             
Minnetonka, MN 55305


Fortis Self Funded Admin Services       5/1-5/31/98      $    8,231        Current
10159 Wayzata Boulevard             
Minnetonka, MN 55305


Fortis Self Funded Admin Services       5/1-5/31/98      $   50,000        Current
10159 Wayzata Boulevard             
Minnetonka, MN 55305


UNUM Life Insurance                     5/1-5/31/98      $    1,951        Current
</TABLE>

                                 Page 14 of 15

<PAGE>   15
                   MOLTEN METAL TECHNOLOGY INSURANCE SCHEDULE

                                   EXHIBIT A

<TABLE>
<CAPTION>
=========================================================================================================
        CARRIER NAME & ADDRESS                            TYPE                       CO          LIMITS  
                                                                                   ENTITY                
=========================================================================================================
<S>                                     <C>                                     <C>             <C>      

PO Box 7777-W0050
Philadelphia, PA
19175-0050


UNUM Life Insurance                     Short Term Disability                    MMT                     
2211 Congress Street
Portland, ME 04122
</TABLE>


<TABLE>
<CAPTION>
====================================================================================
        CARRIER NAME & ADDRESS      EXPIRATION     PREMIUM            PAID
                                       DATE                           THRU
====================================================================================
<S>                               <C>              <C>               <C>    

PO Box 7777-W0050
Philadelphia, PA
19175-0050


UNUM Life Insurance                5/1-5/31/98         $2,110        Current
2211 Congress Street
Portland, ME 04122
</TABLE>


                                 Page 15 of 15

<PAGE>   1
                                                                    Exhibit 99.5

                         UNITED STATES BANKRUPTCY COURT
                           DISTRICT OF MASSACHUSETTS
                                EASTERN DIVISION

IN RE:      M4 ENVIRONMENTAL MANAGEMENT, INC.            CASE NO.:  97-21388-CJK
            DEBTOR                                      JUDGE:   CAROL J. KENNER


                                                                      CHAPTER 11
MONTHLY OPERATING REPORT FOR MONTH ENDING:                               5/31/98




COMES NOW, M4 ENVIRONMENTAL MANAGEMENT, INC. , Debtor in Possession, and hereby
its Monthly Operating Report for the period commencing 5/1/98 and ending 5/31/98
as shown by the report and exhibits consisting of 10 pages and containing the
following, as indicated:

                 X       Monthly Reporting Questionnaire (Attachment 1)
           --------------

                 X       Comparative Balance Sheets (Forms OPR-1 and OPR-2)
           --------------

                 X       Summary of Accounts Receivable (Form OPR-3)
           --------------

                 X       Schedule of Post-Petition Liabilities (Form OPR-4)
           --------------

                 X       Income Statement (Form OPR-5)
           --------------

                 X       Statement of Sources and Uses of Cash (Form OPR-6)
           --------------


I declare under penalty of perjury that this report and all attachments are true
and correct to the best of my knowledge and belief.


Date:  6/26/98                DEBTOR-IN-POSSESSION
       -----------
                              By:
                                              /S/  F. Gordon Bitter
                                              ---------------------------------
                              Name & Title:   F. Gordon Bitter, Vice President
                                              M4 Environmental Management, Inc.
                                              421 Currant Road
                                              Fall River, MA  02720
                                              Telephone:    508-324-6497
<PAGE>   2
                                                                    Exhibit 99.6

                         UNITED STATES BANKRUPTCY COURT
                           DISTRICT OF MASSACHUSETTS
                                EASTERN DIVISION

IN RE:      M4 ENVIRONMENTAL MANAGEMENT, INC.            CASE NO.:  97-21388-CJK
            DEBTOR                                      JUDGE:   CAROL J. KENNER


                                                                      CHAPTER 11
<PAGE>   3
                         UNITED STATES BANKRUPTCY COURT
                           DISTRICT OF MASSACHUSETTS
                                EASTERN DIVISION

IN RE:      M4 ENVIRONMENTAL MANAGEMENT, INC.            CASE NO.:  97-21388-CJK
            DEBTOR                                      JUDGE:   CAROL J. KENNER


                                                                      CHAPTER 11



          NOTE TO THE MONTHLY OPERATING REPORT:


         Consistent with the Debtor's historical accounting practices, this
         operating report accounts for all cash transfers among the Debtor and
         its affiliates and allocates some, but not all, of the expenses borne
         by one affiliate for the benefit of another or the others. In the
         absence of a decision for substantive consolidation, the Debtor will
         develop an appropriate allocation of expenses among the affiliated
         entities.
<PAGE>   4


                           COMPARATIVE BALANCE SHEETS                 FORM OPR-1

CASE NAME:    M4 ENVIRONMENTAL MANAGEMENT, INC.
CASE NUMBER:  97-21388-CJK

                               MONTH ENDED:5/31/98


<TABLE>
<CAPTION>
                                                FILING     MONTH     MONTH      MONTH     MONTH      MONTH     MONTH      MONTH
                                                 DATE      ENDED     ENDED      ENDED     ENDED      ENDED     ENDED      ENDED
                                               12/3/97   12/31/97   1/31/98    2/28/98   3/31/98    4/30/98   5/31/98
<S>                                            <C>       <C>        <C>        <C>       <C>        <C>       <C>         <C>
ASSETS

CURRENT ASSETS

Cash
Other negotiable instruments (i.e.  CD's,
  Treasury Bills, Etc.)
Accounts Receivable-Trade, Net (OPR-3)
Less:   allowance for doubtful accounts
Accounts Receivable-Other
Inventory, at cost
Prepaid expenses
Deposits
Other:
   Stock & interests in:
   M4   Environmental, LP (1% ownership,
   99% owned by MMT Federal Holdings, Inc.)    Unknown    Unknown   Unknown    Unknown   Unknown    Unknown   Unknown


                                               --------------------------------------------------------------------------------
TOTAL CURRENT ASSETS                              0         0          0         0          0         0          0          0
                                               --------------------------------------------------------------------------------
PROPERTY, PLANT AND EQUIPMENT, AT COST
Less:  Accumulated Depreciation
                                               --------------------------------------------------------------------------------
NET PROPERTY, PLANT AND EQUIPMENT                 0         0          0         0          0         0          0          0
                                               --------------------------------------------------------------------------------
OTHER ASSETS (ITEMIZED IF VALUE EXCEEDS
     10% OF "TOTAL ASSETS")
     Intangible Assets
     Less:  Accumulated Amortization
                                               --------------------------------------------------------------------------------
TOTAL OTHER ASSETS                                0         0          0         0          0         0          0          0
                                               --------------------------------------------------------------------------------
TOTAL ASSETS                                      0         0          0         0          0         0          0          0
                                               ================================================================================
</TABLE>



<PAGE>   5
                           COMPARATIVE BALANCE SHEETS                 FORM OPR-2

CASE NAME:    M4 ENVIRONMENTAL MANAGEMENT, INC.
CASE NUMBER:  97-21388-CJK

                               MONTH ENDED:5/31/98

<TABLE>
<CAPTION>
                                                       FILING    MONTH     MONTH    MONTH    MONTH    MONTH       MONTH      MONTH
                                                        DATE     ENDED     ENDED    ENDED    ENDED    ENDED       ENDED      ENDED
                                                       12/3/97   12/31/97  1/31/98  2/28/98  3/31/98  4/30/98     5/31/98
<S>                                                    <C>       <C>       <C>      <C>      <C>      <C>         <C>        <C>
LIABILITIES

POST PETITION LIABILITIES

Secured Debt (See Form OPR-4)
Unsecured Debt-Intercompany Obligations due to cash
   transfers in PostPetition Operations
Unsecured
   Debt-Obligations incurred in Post Petition
   Operations (See Form OPR-4)

                                                      ----------------------------------------------------------------------------
TOTAL POST PETITION LIABILITIES                           0         0         0        0        0        0           0          0
                               
PRE PETITION INTERCOMPANY LIABILITIES
DEFERRED REVENUE/DEFERRED INCOME
TOTAL OTHER PRE PETITION LIABILITIES

                                                      ----------------------------------------------------------------------------
TOTAL LIABILITIES                                         0         0         0        0        0        0           0          0
                                                      ----------------------------------------------------------------------------
SHAREHOLDERS' EQUITY (DEFICIT)

Preferred Stock
Common Stock
Paid in Capital                                         Nil       Nil       Nil      Nil      Nil      Nil         Nil
Valuation Allowance
Dividends Paid
Treasury Stock
Deferred Compensation
Retained Earnings
         Through Filing Date
         Post Filing Date

                                                      ----------------------------------------------------------------------------
TOTAL SHAREHOLDERS' EQUITY (DEFICIT)                      0         0         0        0        0        0           0          0
                                                      ----------------------------------------------------------------------------
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY                0         0         0        0        0        0           0          0
                                                      ============================================================================
</TABLE>

<PAGE>   6
                           SUMMARY OF ACCOUNTS RECEIVABLE             FORM OPR-3

CASE NAME:    M4 ENVIRONMENTAL MANAGEMENT, INC.
CASE NUMBER:  97-21388-CJK

                               MONTH ENDED:5/31/98



<TABLE>
<CAPTION>
                                                                         0-30         31-60        61-90         OVER
                                                           TOTAL         DAYS          DAYS         DAYS        90 DAYS

<S>              <C>                                       <C>           <C>          <C>          <C>          <C>
DATE OF FILING:  12/3/97                                      0
                 Allowance for doubtful accounts              0
                                                           ------------------------------------------------------------
                                                              0            0            0            0             0
                                                           ============================================================

MONTH:           12/31/97
                 Allowance for doubtful accounts              0
                                                           ------------------------------------------------------------
                                                              0            0            0            0             0
                                                           ============================================================

MONTH:           1/31/98                                      0
                 Allowance for doubtful accounts              0
                                                           ------------------------------------------------------------
                                                              0            0            0            0             0
                                                           ============================================================

MONTH:           2/28/98                                      0
                 Allowance for doubtful accounts              0
                                                           ------------------------------------------------------------
                                                              0            0            0            0             0
                                                           ============================================================

MONTH:           3/31/98                                      0
                 Allowance for doubtful accounts              0
                                                           ------------------------------------------------------------
                                                              0            0            0            0             0
                                                           ============================================================

MONTH:           4/30/98                                      0
                                                              0
                                                           ------------------------------------------------------------
                                                              0            0            0            0             0
                                                           ============================================================

MONTH:           5/31/98
                 Allowance for doubtful accounts
                                                           ------------------------------------------------------------
                                                              0            0            0            0             0
                                                           ============================================================
</TABLE>

<PAGE>   7
                      SCHEDULE OF POST PETITION LIABILITIES           FORM OPR-4

Case Name:    M4 ENVIRONMENTAL MANAGEMENT, INC.
Case Number:  97-21388-CJK

                                                           MONTH ENDED:  5/31/98


<TABLE>
<CAPTION>
                                                             DATE         DATE     TOTAL    0-30    31-60       61-90       OVER
                                                           INCURRED        DUE      DUE     DAYS    DAYS        DAYS       90 DAYS


<S>                                                        <C>            <C>      <C>      <C>     <C>         <C>        <C>
TAXES PAYABLE

          Federal Income Taxes                                                     NONE
          FICA-Employer's Share                                                    NONE
          FICA-Employee's Share                                                    NONE
          Unemployment Tax                                                         NONE
          State Sales & Use Tax                                                    NONE
          State __________ Tax                                                     NONE
          Personal Property Tax                                                    NONE

                                                                                 -------------------------------------------------
TOTAL TAXES PAYABLE                                                                   0       0        0           0           0

POST PETITION SECURED DEBT
DIP FINANCING


ACCRUED INTEREST PAYABLE

                                                                                 -------------------------------------------------
TOTAL POST PETITION SECURED DEBT                                                      0       0        0           0           0


POST PETITION UNSECURED DEBT
TRADE ACCOUNTS PAYABLE & OTHER:
          Trade Accounts Payable (see attached schedules)
          Payroll withholdings
          Accrued Payroll
          Accrued expenses
                                                                                 -------------------------------------------------
TOTAL TRADE ACCOUNTS PAYABLE & OTHER                                                  0       0        0           0           0
                                                                                 -------------------------------------------------
TOTAL ALL POST PETITION LIABILITIES                                                   0       0        0           0           0
                                                                                 =================================================
</TABLE>



<PAGE>   8
                                INCOME STATEMENT                      FORM OPR-5

CASE NAME:    M4 ENVIRONMENTAL MANAGEMENT, INC.
CASE NUMBER:  97-21388-CJK

                                                             MONTH ENDED 5/31/98


<TABLE>
<CAPTION>

                                                     PRE       POST     MONTH    MONTH    MONTH    MONTH    MONTH    MONTH  MONTH
                                                   PETITION  PETITION   ENDED    ENDED    ENDED    ENDED    ENDED    ENDED  ENDED
                                                   12/3/97   12/31/97  1/31/98  2/28/98  3/31/98  4/30/98  5/31/98
                                                   -------------------------------------------------------------------------------

<S>                                                <C>       <C>       <C>      <C>      <C>      <C>      <C>       <C>    <C>

NET REVENUE (INCOME)
                                                   -------------------------------------------------------------------------------

COST OF GOODS SOLD
  Salaries & wages
  Less: Salaries & wages capitalized in fixed
     assets
  Benefits
  Bad debt expense
  Cost of goods sold
  Decontamination & disposal 
  Disposal costs-secondary wastes 
  Financing costs
  Insurance 
  Legal services 
  Materials 
  Office expense & supplies 
  Other 
  Outside services 
  Professional services 
  Rent-equipment 
  Rent-office/buildings
  Supplies-processing 
  Taxes 
  Telephone 
  Transportation 
  Travel & entertainment
  Utilities

                                                   -------------------------------------------------------------------------------
TOTAL COST OF GOODS SOLD                                  0        0        0        0        0        0        0        0      0
                                                   -------------------------------------------------------------------------------

INCOME BEFORE INTEREST, DEPRECIATION,
        TAXES, OR EXTRAORDINARY EXPENSEs                  0        0        0        0        0        0        0        0      0
                                                   -------------------------------------------------------------------------------

INTEREST EXPENSE
DEPRECIATION AND AMORTIZATION
INCOME TAX EXPENSE (BENEFIT)
REORGANIZATION EXPENSE
OTHER (INCOME) EXPENSE
(GAIN) LOSS ON SALE OF ASSETS
                                                   -------------------------------------------------------------------------------

NET INCOME (LOSS)                                    NONE     NONE     NONE     NONE     NONE     NONE      NONE          0      0
                                                   ===============================================================================
</TABLE>

<PAGE>   9

                     STATEMENT OF SOURCES AND USES OF CASH            FORM OPR-6

CASE NAME:    M4 ENVIRONMENTAL MANAGEMENT, INC.
CASE NUMBER:  97-21388-CJK

                                                            MONTH ENDED: 5/31/98

<TABLE>
<CAPTION>
                                                                             TOTAL      TOTAL    TOTAL    TOTAL
                                                        PRE       POST       MONTH      MONTH    MONTH    MONTH    MONTH    MONTH
                                                      PETITION   PETITION    ENDED      ENDED    ENDED    ENDED    ENDED    ENDED
                                                     12/1-12/2  12/3-12/31  12/31/97   1/31/98  2/28/98  3/31/98  4/30/98  5/31/98

<S>                                                  <C>        <C>         <C>        <C>      <C>      <C>      <C>      <C>
CASH FLOWS-OPERATING ACTIVITIES:

Net Earnings (Loss)                                               NONE       NONE       NONE    NONE      NONE     NONE      NONE

Adjustments to Reconcile Net Earnings to
Net Cash Provided (Used) by Operating Activities:  
 Depreciation & Amortization                              0         0          0          0       0         0        0         0
 Decrease (Increase)-Accounts Receivable                  0         0          0          0       0         0        0         0
 Decrease (Increase)-Inventories                          0         0          0          0       0         0        0         0
 Decrease (Increase)-Prepaid Expenses                     0         0          0          0       0         0        0         0
 Decrease (Increase)-Other Assets                         0         0          0          0       0         0        0         0
 Increase (Decrease)-Pre Petition Liabilities             0         0          0          0       0         0        0         0
 Increase (Decrease)-Post Petition Liabilities            0         0          0          0       0         0        0         0

                                                     ------------------------------------------------------------------------------
NET CASH PROVIDED (USED) BY OPERATING ACTIVITIES          0         0          0          0       0         0        0         0
                                                     ------------------------------------------------------------------------------

CASH FLOWS USED IN INVESTING ACTIVITIES
  Capital Expenditures                                              0          0          0       0         0        0         0
  Sale of Net Fixed Assets
                                                     ------------------------------------------------------------------------------
NET CASH PROVIDED (USED) IN INVESTING ACTIVITIES          0         0          0          0       0         0        0         0
                                                     ------------------------------------------------------------------------------

CASH FLOWS FROM FINANCING ACTIVITIES:
   Increase (Decrease)-Morgens Waterfall                            0          0          0       0         0        0         0
   Increase (Decrease)-Shareholder Valuations                       0          0          0       0         0        0         0

   Purchase of Treasury Stock-Preferred Shares

                                                     ------------------------------------------------------------------------------
NET CASH PROVIDED (USED) IN FINANCING ACTIVITIES          0         0          0          0       0         0        0         0
                                                     ------------------------------------------------------------------------------

NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS      0         0          0          0       0         0        0         0

Cash and Cash Equivalents at Beginning of Period                    0          0          0       0         0        0         0

                                                     ------------------------------------------------------------------------------
Cash and Cash Equivalents at End of Period                0         0          0          0       0         0        0         0
                                                     ==============================================================================
</TABLE>
<PAGE>   10

                                   CHAPTER 11                       ATTACHMENT 1
                            MONTHLY OPERATING REPORT
                        MONTHLY REPORTING QUESTIONNAIRE

CASE NAME:    M4 ENVIRONMENTAL MANAGEMENT, INC.
CASE NUMBER:  97-21388-CJK

                                                            MONTH ENDED: 5/31/98
                                                                          PAGE 1


1.   PAYROLL
           State the amount of all executive wages paid and taxes withheld and
paid.

         NAME AND TITLE OF            DATE       WAGES PAID       TAXES WITHHELD
         EXECUTIVE                    PAID     GROSS       NET    DUE       PAID

         THE FOLLOWING OFFICERS OF THIS DEBTOR ARE EMPLOYEES AND OFFICERS OF
         MOLTEN METAL TECHNOLOGY, INC. ("MMT"). THESE OFFICERS DO NOT RECEIVE
         COMPENSATION FROM THIS DEBTOR, BUT ARE COMPENSATED MMT, WHICH HAS
         DISCLOSED SUCH COMPENSATION IN ITS MONTHLY OPERATING REPORT (CASE
         NUMBER 97-21385-CJK).

         F. Gordon Bitter, CEO & CFO, Director
         Ethan E. Jacks, VP, General Counsel, Secretary
         Eugene Berman, Assistant Secretary
         Charles W. Shaver, President & COO, Director
         Randall Jones, Assistant Secretary


<TABLE>
<S>                                                                        <C>       <C>        <C>         <C>
                                                                        -----------------------------------------
          TOTAL EXECUTIVE PAYROLL                                          0         0          0           0
                                                                        =========================================
</TABLE>





2.  INSURANCE
          Is Workers' Compensation and other insurance in effect?          N/A
                                                                         -------
          Are payments current? 
                                                                         -------
          If any policy has lapsed, been replaced or renewed,
            state so in the schedule below. 
          Attach a copy of the new policy's binder or coverage page.


                                                                         DATE
                                COVERAGE  POLICY  EXPIRATION  PREMIUM  COVERAGE
TYPE       CARRIER NAME          AMOUNT   NUMBER      DATE    AMOUNT   PAID THRU


                      SEE ATTACHED INSURANCE EXPIRATION CERTIFICATE

<PAGE>   11
                                                                          PAGE 2

3.  BANK ACCOUNTS

<TABLE>
<CAPTION>
                                                              TOTAL
<S>                                                           <C>
BANK NAME

ACCOUNT NUMBER


BEGINNING BOOK BALANCE                                           0
PLUS:     Deposits-Collections of A/R
          Other Receipts
          Loan Advances

LESS:     Disbursements
          Payroll
          Returned Checks
          Loan Repayments

OTHER:    Adjustments
          Transfers In (Out)

                                                            ----------
ENDING BOOK BALANCE                                              0
                                                            ==========
</TABLE>



4.  POST PETITION PAYMENTS TO PROFESSIONALS AND ON PRE PETITION DEBTS
    List any post petition payments to professional and payments on
    Pre-petition debts in the schedule below.

<TABLE>
<CAPTION>
    Payments To/On                                Amount      Date     Check #

<S>                                               <C>         <C>      <C>
    PROFESSIONALS (ATTORNEYS, ACCOUNTANTS, ETC.)  



                                                  NONE



                                                --------
                                                    0
                                                ========
    PRE-PETITION DEBTS


                                                  NONE





                                                --------
   TOTAL PAYMENTS OF PRE-PETITION DEBTS             0
                                                ========
</TABLE>


f
<PAGE>   12

INSURANCE EXPIRATION STATEMENT
<TABLE>
                                   INSURANCE  COVERAGE  POLICY  EXPIRATION  PREMIUM
CARRIER NAME AND ADDRESS  TYPE       AGENT     AMOUNT   NUMBER    DATE       AMOUNT
- ----------------------------------------------------------------------------------
<S>                       <C>       <C>       <C>       <C>     <C>         <C>
</TABLE>


           SEE ATTACHED








           I declare under penalty of perjury that the information provided on
           the attachments hereto is true and correct to the best of my
           knowledge and belief.


           Date: 5/26/98



                                         MOLTEN METAL TECHNOLOGY, INC.          
                                                                                
                                             /S/  F. Gordon Bitter            
                                         By:__________________________          
                                               F. Gordon Bitter                 
                                               Chief Executive Officer          
                                                                                
                                         MMT OF TENNESSEE, INC.                 
                                                                                
                                             /S/  F. Gordon Bitter    
                                         By:__________________________          
                                               F. Gordon Bitter                 
                                               Vice President                   
                                                                                
                                         M4 ENVIRONMENTAL, L.P.                
                                                                                
                                                                                
                                         By:__________________________          
                                               M4 Environmental Management, Inc.
                                               General Partner    
              
                                             /S/  F. Gordon Bitter          
                                         By:__________________________          
                                               F. Gordon Bitter                 
                                               Vice President                   
                                                                                
                                         MMT FEDERAL HOLDINGS, INC.             
                                                                                
                                             /S/  F. Gordon Bitter 
                                         By:__________________________          
                                               F. Gordon Bitter                 
                                               Vice President                   
                                         
<PAGE>   13
                   Molten Metal Technology Insurance Schedule
                                   Exhibit A

<TABLE>
<CAPTION>
================================================================================================================================
           CARRIER NAME & ADDRESS                                 TYPE                   BROKER      LIMITS          POLICY     
                                                                                                                     NUMBER     
================================================================================================================================

<S>                                          <C>                                        <C>       <C>            <C>           
Commerce & Industry Insurance Co.            General Liability                          Aon          $1,000,000     340-94-76   
70 Pine Street                               Automobile Liability                       Aon          $1,000,000     766-56-11   
New York, NY   10270                         Excess Liability - 1st layer               Aon         $20,000,000     606-23-31   
                                                                                                  excess of $1M

New Hampshire Insurance Co.                  Workers Compensation                       Aon         Statutory      WC588-59-75  
70 Pine Street                               Workers Compensation - CA                  Aon         Statutory      WC588-59-77  
New York NY  10270                           Employers' Liability                       Aon          $1,000,000    WC588-59-75  
                                                                                                                   and -77[CA]

American International Specialty Lines       Pollution Liability - MA/TN                Aon          $3,000,000      8199951    
   Insurance Co.                             Pollution Liability - TX                   Aon          $1,000,000      8199950    
70 Pine Street
New York NY  10270


Executive Risk Indemnity Company             Fidelity                                   Aon            $500,000   751-118812-98 
P.O. Box 91394                               Fiduciary                                  Aon          $2,000,000   751-118834-98 
Chicago, IL   60693

Executive Risk Indemnity Company             Directors & Officers Liability             Aon         $10,000,000   751-091628-98 
P.O. Box 91394
Chicago, IL   60693

CNA Insurance Companies                      Foreign Liability                          Aon          $1,000,000  PST 00 9648288 
180 Maiden Lane
New York, NY  10038

Allendale Mutual Insurance Co.               Property                                   Aon        $147,000,000       CC626     
Allendale Park                                                                                       Blanket
Johnston, RI  02919

American Nuclear Insurers                    Nuclear All Risk Property                  J&H/M&M     $45,000,000       98262     
Town Center                                  Nuclear Liability Facility Form - TN       J&H/M&M     $50,000,000      NF-0338    
29 South Main Street                         Master Worker Certificate - TN             J&H/M&M    $200,000,000      NW-0235    
West Hartford, CT 06107                                                                            Shared Agg.
</TABLE>





<TABLE>
<CAPTION>
========================================================================================
           CARRIER NAME & ADDRESS            EXPIRATION   PREMIUM          PAID
                                             DATE                          THRU
========================================================================================

<S>                                          <C>          <C>        <C>
Commerce & Industry Insurance Co.            12/3/98        $53,000       Current
70 Pine Street                               12/3/98         $3,540       Current
New York, NY   10270                         12/3/98        $43,185       Current
                                           

New Hampshire Insurance Co.                  12/3/98       $111,250       Current
70 Pine Street                               12/3/98           $753       Current
New York NY  10270                           12/3/98       inclu.         Current
                                           

American International Specialty Lines       12/3/98        $28,342       Current
   Insurance Co.                             12/3/98        $16,919       Current
70 Pine Street
New York NY  10270


Executive Risk Indemnity Company             5/9/99          $6,000       Current
P.O. Box 91394                               5/9/99          $6,000       Current
Chicago, IL   60693

Executive Risk Indemnity Company             1/19/99       $350,000       Current
P.O. Box 91394
Chicago, IL   60693

CNA Insurance Companies                      2/1/99          $2,000       Current
180 Maiden Lane
New York, NY  10038

Allendale Mutual Insurance Co.               12/2/99       $170,000       Current
Allendale Park                             
Johnston, RI  02919

American Nuclear Insurers                    1/1/99         $97,500       Current
Town Center                                  12/31/98      $124,215       Current
29 South Main Street                         12/31/98          $550  Not yet invoiced
West Hartford, CT 06107                    
</TABLE>



<PAGE>   14


<TABLE>
<CAPTION>
=================================================================================================================================
           CARRIER NAME & ADDRESS                                 TYPE                       BROKER      LIMITS          POLICY  
                                                                                                                         NUMBER  
=================================================================================================================================

<S>                                          <C>                                            <C>        <C>               <C>        

                                             Nuclear Supplier's & Transp.                   J&H/M&M     $15,000,000      NS-0539 
                                             Nuclear Liability Facility Form - SC           J&H/M&M     $10,000,000      NF-0329 
                                             Nuclear Foreign Supplier's & Transp.           J&H/M&M     $10,000,000        TBD   
                                             Master Worker Certificate - SC                 J&H/M&M    $200,000,000      NW-0237 
                                                                                                       Shared Agg.
                                             Nuclear Facility Liability - Comm. Park        J&H/M&M     $10,000,000      NF-0337 
                                             Master Worker Certificate - Comm. Park         J&H/M&M    $200,000,000      NW-0234 
                                                                                                       Shared Agg.

American International Specialty             Pollution Legal and Closure/Post Closure       J&H/M&M      $3,000,000      8183013 
   Lines Ins. Co.                                                                                      Pollution Legal            
Harborside Financial Center                                                                              $3,400,000              
401 Plaza 3                                                                                            Closure                    
Jersey City, NJ   07311
</TABLE>

Note: The premium for the Pollution Legal/Closure policy (AISLIC no. 8183013) is
billed in 5 annual installments of $19,280 (Pollution Legal) and $85,000
(Closure). To date, the first three installments are paid in full. The remaining
installments come due on the anniversary date. Thus, the remaining installments
for 12/15/98 and 1999 for Pollution






<TABLE>
<CAPTION>
=====================================================================================
           CARRIER NAME & ADDRESS         EXPIRATION   PREMIUM          PAID
                                          DATE                          THRU
=====================================================================================

<S>                                     <C>          <C>         <C>

                                        12/31/98        $8,670   Current
                                        12/31/98       $13,590   Current
                                        12/31/98       TBD       Based on Foreign Sales
                                        12/31/98          $550   Not yet invoiced
                                        
                                        12/31/98       $39,568   Current
                                        12/31/98          $550   Not yet invoiced
                                        

American International Specialty        10/15/00       $94,400   Current
   Lines Ins. Co.                       Poll. Legal
Harborside Financial Center             12/7/00       $425,000   Current
401 Plaza 3                             Closure
Jersey City, NJ   07311
</TABLE>


Note: The premium for the Pollution Legal/Closure policy (AISLIC no. 8183013) is
billed in 5 annual installments of $19,280 (Pollution Legal) and $85,000
(Closure). To date, the first three installments are paid in full. The remaining
installments come due on the anniversary date. Thus, the remaining installments
for 12/15/98 and 1999 for Pollution and for 1/4/99 and 2000 for Closure, are
unbilled and unpaid.


<PAGE>   15
                   Molten Metal Technology Insurance Schedule
                                   Exhibit A

<TABLE>
<CAPTION>
============================================================================-=====================================================
        CARRIER NAME & ADDRESS                        TYPE                   CO      LIMITS   EXPIRATION     PREMIUM      PAID
                                                                           ENTITY              DATE                       THRU
=========================================================================-========================================================

<S>                                 <C>                                    <C>      <C>       <C>            <C>           <C>
Blue Cross & Blue Shield of RI      Full Coverage Medical                    MMT               5/1-5/31/98    $10,622      Current
PO Box 1057
Providence, RI
02901-1057

Delta Dental Plan                   Self Funded Dental                       MMT               5/1-5/31/98       None      Current
PO Box 5-0198                                                                                                              Current
Woburn, MA 01815-0198                                                                                                      Current


Fortis Benefits Insurance Co.       Employee Funded-Supplemental Life        MMT               5/1-5/31/98     $1,968      Current
PO Box 27-644-1
Kansas City, MO 64180-0644


Fortis Benefits Insurance Co.       Employee Funded-Supplemental Life        MMT TN            5/1-5/31/98     $1,185      Current
PO Box 27-644-1
Kansas City, MO 64180-0644


Fortis Self Funded Admin Services   Medical Stop Loss and Life Insurance     MMT               5/1-5/31/98    $10,960      Current
10159 Wayzata Boulevard             Premiums
Minnetonka, MN 55305


Fortis Self Funded Admin Services   Medical Stop Loss and Life Insurance     MMT TN            5/1-5/31/98     $8,231      Current
10159 Wayzata Boulevard             Premiums
Minnetonka, MN 55305


Fortis Self Funded Admin Services   Self Funded Medical Claims               MMT &             5/1-5/31/98    $50,000      Current
10159 Wayzata Boulevard                                                      MMT TN
Minnetonka, MN 55305


UNUM Life Insurance                 Employee Funded Long Term Disability     MMT               5/1-5/31/98     $1,951      Current
</TABLE>

<PAGE>   16
                   Molten Metal Technology Insurance Schedule
                                   Exhibit A

<TABLE>
<CAPTION>
============================================================================-=====================================================
        CARRIER NAME & ADDRESS                        TYPE                   CO      LIMITS   EXPIRATION     PREMIUM      PAID
                                                                           ENTITY              DATE                       THRU
=========================================================================-========================================================

<S>                                 <C>                                    <C>      <C>       <C>            <C>           <C>
PO Box 7777-W0050
Philadelphia, PA
19175-0050


UNUM Life Insurance                 Short Term Disability                    MMT               5/1-5/31/98     $2,110      Current
2211 Congress Street
Portland, ME 04122
</TABLE>


<PAGE>   1
                                                                    Exhibit 99.6

                         UNITED STATES BANKRUPTCY COURT
                           DISTRICT OF MASSACHUSETTS
                                EASTERN DIVISION

IN RE:      M4 ENVIRONMENTAL MANAGEMENT, INC.                 NO.:  97-21388-CJK
            DEBTOR                                      JUDGE:   CAROL J. KENNER


                                                                      CHAPTER 11
MONTHLY OPERATING REPORT FOR MONTH ENDING:                               5/31/98




COMES NOW, M4 ENVIRONMENTAL MANAGEMENT, INC. , Debtor in Possession, and hereby
its Monthly Operating Report for the period commencing 5/1/98 and ending 5/31/98
10 pages and containing the following, as indicated:

                 X       Monthly Reporting Questionnaire (Attachment 1)

                 X       Comparative Balance Sheets (Forms OPR-1 and OPR-2)

                 X       Summary of Accounts Receivable (Form OPR-3)

                 X       Schedule of Post-Petition Liabilities (Form OPR-4)

                 X       Income Statement (Form OPR-5)

                 X       Statement of Sources and Uses of Cash (Form OPR-6)


I declare under penalty of perjury that this report and all attachments are true
and correct to the best of my knowledge and belief.


Date:  6/26/98                DEBTOR-IN-POSSESSION

                              By:
                                             /s/ F. Gordon Bitter
                              Name & Title:   F. Gordon Bitter, Vice President
                                              M4 Environmental Management, Inc.
                                              421 Currant Road
                                              Fall River, MA  02720
                                              Telephone:    508-324-6497
<PAGE>   2
                         UNITED STATES BANKRUPTCY COURT
                        EASTERN DISTRICT OF MASSACHUSETTS


IN RE:      M4 ENVIRONMENTAL MANAGEMENT, INC.                 NO.:  97-21388-CJK
            DEBTOR                                      JUDGE:   CAROL J. KENNER


                                                                      CHAPTER 11



          NOTE TO THE MONTHLY OPERATING REPORT:


         Consistent with the Debtor's historical accounting practices, this
         operating report accounts for all cash transfers among the Debtor and
         its affiliates and allocates some, but not all, of the expenses borne
         by one affiliate for the benefit of another or the others. In the
         absence of a decision for substantive consolidation, the Debtor will
         develop an appropriate allocation of expenses among the affiliated
         entities.
<PAGE>   3
                           COMPARATIVE BALANCE SHEETS                 FORM OPR-1

CASE NAME:         M4 ENVIRONMENTAL, LP
CASE NUMBER:      97-21389-CJK

                                                           MONTH ENDED:  5/31/98


<TABLE>
<CAPTION>
                                                FILING          MONTH         MONTH        MONTH        MONTH     
                                                 DATE           ENDED         ENDED        ENDED        ENDED
                                                12/3/97        12/31/97      1/31/98      2/28/98      3/31/98
<S>                                           <C>            <C>          <C>          <C>          <C> 

ASSETS

CURRENT ASSETS

Cash                                              53,265
Other negotiable instruments (i.e.  CD's,
          Treasury Bills, Etc.)
Accounts Receivable-Trade, Net (OPR-3)
Less:   allowance for doubtful accounts
Accounts Receivable-Other                      2,294,613      2,294,613    2,294,613    2,294,613    2,294,613    
Inventory, at cost
Prepaid expenses
Deposits
Other:
          Investment in CW LLC                 1,497,718      1,497,718    1,497,718    1,497,718    1,497,718
          Long Term Notes Receivable from
               Lockheed Martin                19,000,000     19,000,000   19,000,000   19,000,000   19,000,000 



TOTAL CURRENT ASSETS                          22,845,596     22,792,331   22,792,331   22,792,331   22,792,331

PROPERTY, PLANT AND EQUIPMENT, AT COST        10,653,977     10,653,977   10,653,977   10,653,977   10,653,977
Less:  Accumulated Depreciation                 (580,281)      (710,532)    (828,954)    (947,376)  (1,065,798) 

NET PROPERTY, PLANT AND EQUIPMENT             10,073,696      9,943,445    9,825,023    9,706,601    9,588,179

OTHER ASSETS (ITEMIZED IF VALUE EXCEEDS
          10% OF "TOTAL ASSETS")
          Intangible Assets                    2,414,005      2,414,005    2,414,005    2,414,005    2,414,005
          Less:  Accumulated Amortization       (102,512)      (120,443)    (138,373)    (156,304)    (174,235)

TOTAL OTHER ASSETS                             2,311,493      2,293,562    2,275,632    2,257,701    2,239,770

TOTAL ASSETS                                  35,230,785     35,029,338   34,892,986   34,756,633   34,620,280
</TABLE>




<TABLE>
<CAPTION>
                                                    MONTH         MONTH       MONTH
                                                    ENDED         ENDED       ENDED
                                                   4/30/98       5/31/98
<S>                                             <C>           <C>                 <C>

ASSETS

CURRENT ASSETS

Cash                                           
Other negotiable instruments (i.e.  CD's,
          Treasury Bills, Etc.)
Accounts Receivable-Trade, Net (OPR-3)
Less:   allowance for doubtful accounts
Accounts Receivable-Other                        2,294,613     2,294,613
Inventory, at cost
Prepaid expenses
Deposits
Other:
          Investment in CW LLC                   1,497,718     1,497,718
          Long Term Notes Receivable from
               Lockheed Martin                  19,000,000    19,000,000



TOTAL CURRENT ASSETS                            22,792,331    22,792,331          0

PROPERTY, PLANT AND EQUIPMENT, AT COST          10,653,977    10,653,977
Less:  Accumulated Depreciation                 (1,184,220)   (1,302,642)

NET PROPERTY, PLANT AND EQUIPMENT                9,469,757     9,351,335          0

OTHER ASSETS (ITEMIZED IF VALUE EXCEEDS
          10% OF "TOTAL ASSETS")
          Intangible Assets                      2,414,005     2,414,005
          Less:  Accumulated Amortization         (192,166)     (210,097)

TOTAL OTHER ASSETS                               2,221,839     2,203,908          0

TOTAL ASSETS                                    34,483,927    34,347,574          0
</TABLE>



<PAGE>   4



                          COMPARATIVE BALANCE SHEETS                  FORM OPR-2

CASE NAME:        M4 ENVIRONMENTAL, LP
CASE NUMBER:      97-21389-CJK


                                                          MONTH ENDED:   5/31/98
                                                                         -------


<TABLE>
<CAPTION>
                                                        FILING        MONTH        MONTH        MONTH        MONTH      
                                                         DATE         ENDED        ENDED        ENDED        ENDED      
                                                        12/3/97      12/31/97     1/31/98      2/28/98      3/31/98     
                                                      ------------------------------------------------------------------
<S>                                                     <C>          <C>          <C>          <C>          <C>         
LIABILITIES                                                                                                             
                                                                                                                        
POST PETITION LIABILITIES                                                                                               
                                                                                                                        
Secured Debt (See Form OPR-4)                                                                                           
Unsecured Debt-Intercompany Obligations due to cash                                                                      
   transfers in Post Petition Operations                                 (25,762)      63,760       63,760       64,065      
Unsecured Debt-Obligations incurred in Post Petition                                                                    
   Operations (See Form OPR-4)                                            34,057        8,294        8,294        8,294      
                                                                                                                        
                                                      ------------------------------------------------------------------
TOTAL POST PETITION LIABILITIES                                   0        8,295       72,054       72,054       72,359 
                                                                                                                        
PRE PETITION INTERCOMPANY LIABILITIES                    35,906,310   35,906,310   35,906,310   35,906,310   35,906,310 
DEFERRED REVENUE/DEFERRED INCOME                                                                                        
TOTAL OTHER PRE PETITION LIABILITIES                     40,969,552   40,907,477   40,843,718   40,843,718   40,844,824 
                                                      ------------------------------------------------------------------
                                                                                                                        
TOTAL LIABILITIES                                        76,875,862   76,822,082   76,822,082   76,822,082   76,823,493 
                                                                                                                        
PARTNERSHIP EQUITY (DEFICIT)                                                                                            
                                                                                                                        
Retained Earnings                                                                                                       
           Through Filing Date                          (41,645,077) (41,645,077) (41,645,077) (41,645,077) (41,645,077)
           Post Filing Date                                             (147,667)    (284,019)    (420,372)    (558,136)
                                                                                                                        
                                                      ------------------------------------------------------------------
TOTAL SHAREHOLDERS' EQUITY (DEFICIT)                    (41,645,077) (41,792,744) (41,929,096) (42,065,449) (42,203,213)
                                                      ------------------------------------------------------------------
                                                                                                                        
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY               35,230,785   35,029,338   34,892,986   34,756,633   34,620,280 
                                                      ==================================================================
</TABLE>




<TABLE>
<CAPTION>
                                                        MONTH        MONTH        MONTH
                                                        ENDED        ENDED        ENDED
                                                       4/30/98      5/31/98
                                                      --------------------------------------
<S>                                                    <C>          <C>          <C>
LIABILITIES                                                                                 
                                                                                            
POST PETITION LIABILITIES                                                                   
                                                                                            
Secured Debt (See Form OPR-4)                                                               
Unsecured Debt-Intercompany Obligations due to cash                                         
   transfers in Post Petition Operations                    64,065       64,065                  
Unsecured Debt-Obligations incurred in Post Petition                                              
   Operations (See Form OPR-4)                               8,294        8,294                  
                                                                                            
                                                      --------------------------------------
TOTAL POST PETITION LIABILITIES                             72,359       72,359            0
                                                                                            
PRE PETITION INTERCOMPANY LIABILITIES                   35,906,310   35,906,310             
DEFERRED REVENUE/DEFERRED INCOME                                                            
TOTAL OTHER PRE PETITION LIABILITIES                    40,844,824   40,844,824             
                                                      --------------------------------------
                                                                                            
TOTAL LIABILITIES                                       76,823,493   76,823,493            0
                                                                                            
PARTNERSHIP EQUITY (DEFICIT)                                                                
                                                                                            
Retained Earnings                                                                           
           Through Filing Date                         (41,645,077) (41,645,077)            
           Post Filing Date                               (694,489)    (830,842)            
                                                                                            
                                                      --------------------------------------
TOTAL SHAREHOLDERS' EQUITY (DEFICIT)                   (42,339,566) (42,475,919)           0
                                                      --------------------------------------
                                                                                            
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY              34,483,927   34,347,574            0
                                                      ======================================
</TABLE>


<PAGE>   5
                         SUMMARY OF ACCOUNTS RECEIVABLE              FORM OPR-3

CASE NAME:        M4 ENVIRONMENTAL, LP
CASE NUMBER:      97-21389-CJK

                                                         MONTH ENDED:    5/31/98
                                                                         -------

<TABLE>
<CAPTION>
                                                                             0-30         31-60        61-90         OVER
                                                               TOTAL         DAYS          DAYS         DAYS        90 DAYS

                                                  ------------------------------------------------------------------------

<S>              <C>                              <C>                        <C>          <C>          <C>          <C>
DATE OF FILING:  12/3/97                                          0
                 Allowance for doubtful accounts                  0
                                                       -------------------------------------------------------------------
                                                                  0             0            0            0             0
                                                       ===================================================================

MONTH:           12/31/97                                         0
                 Allowance for doubtful accounts                  0
                                                       -------------------------------------------------------------------
                                                                  0             0            0            0             0
                                                       ===================================================================

MONTH:           1/31/98                                          0
                 Allowance for doubtful accounts                  0
                                                       -------------------------------------------------------------------
                                                                  0             0            0            0             0
                                                       ===================================================================

MONTH:           2/28/98                                          0
                 Allowance for doubtful accounts                  0
                                                       -------------------------------------------------------------------
                                                                  0             0            0            0             0
                                                       ===================================================================

MONTH:           3/31/98                                          0
                 Allowance for doubtful accounts                  0
                                                       -------------------------------------------------------------------
                                                                  0             0            0            0             0
                                                       ===================================================================

MONTH:           4/30/98                                          0
                 Allowance for doubtful accounts                  0
                                                       -------------------------------------------------------------------
                                                                  0             0            0            0             0
                                                       ===================================================================

MONTH:           5/31/98                                          0
                 Allowance for doubtful accounts                  0
                                                       -------------------------------------------------------------------
                                                                  0             0            0            0             0
                                                       ===================================================================
</TABLE>
<PAGE>   6
                     SCHEDULE OF POST PETITION LIABILITIES            FORM OPR-4

CASE NAME:        M4 ENVIRONMENTAL, LP
CASE NUMBER:      97-21389-CJK






                                                            MONTH ENDED: 5/31/98
                                                                         -------


<TABLE>
<CAPTION>
                                                                                  DATE          DATE      TOTAL       0-30    
                                                                                 INCURRED       DUE        DUE        DAYS    

                                                                                ----------------------------------------------
<S>                                                                             <C>             <C>    <C>            <C>     
TAXES PAYABLE
- -------------
          Federal Income Taxes                                                                             NONE               
          FICA-Employer's Share                                                                            NONE               
          FICA-Employee's Share                                                                            NONE               
          Unemployment Tax                                                                                 NONE               
          State Sales & Use Tax                                                                            NONE               
          State __________ Tax                                                                             NONE               
          Personal Property Tax                                                                            NONE               
                                                                                                                              
                                                                                                       -----------------------
TOTAL TAXES PAYABLE                                                                                           0          0    
- -------------------                                                                                                           
                                                                                                       -----------------------
                                                                                                                              
POST PETITION SECURED DEBT                                                                             
- --------------------------                                                                             
                                                                                                                              
                                                                                                                              
ACCRUED INTEREST PAYABLE                                                                                                      
                                                                                                                              
                                                                                                                              
                                                                                                       -----------------------
TOTAL POST PETITION SECURED DEBT                                                                              0          0    
- --------------------------------                                                                                              
                                                                                                       -----------------------
                                                                                                                              
                                                                                                                              
POST PETITION UNSECURED DEBT
- ----------------------------                                                                                                  
TRADE ACCOUNTS PAYABLE & OTHER:                                                                                               
Trade Accounts Payable (see attached schedules) Unsecured debt-Bank                                                           
processed automatic funds transfer debit                                                                                      
      to pay bond interest on December 1 against insufficient funds balance.                                                  
     This created an overdraft of  $8,294 and an unsecured debt obligation                                                    
     to the bank.                                                                                       8,294                 
Accrued expenses-Deferred Decontamination                                                                                     
       & Decommissioning Expenses                                                                           0                 
                                                                                                                              
                                                                                                       -----------------------
TOTAL TRADE ACCOUNTS PAYABLE & OTHER                                                                      8,294          0    
                                                                                                       -----------------------
                                                                                                                              
TOTAL ALL POST PETITION LIABILITIES                                                                       8,294          0    
                                                                                                       =======================
</TABLE>

<TABLE>
<CAPTION>
                                                                                31-60       61-90       OVER
                                                                                 DAYS       DAYS      90 DAYS

                                                                               ---------------------------------
<S>                                                                             <C>         <C>       <C>     
TAXES PAYABLE

          Federal Income Taxes                                                                                       
          FICA-Employer's Share                                                                                      
          FICA-Employee's Share                                                                                      
          Unemployment Tax                                                                                           
          State Sales & Use Tax                                                                                      
          State __________ Tax                                                                                       
          Personal Property Tax                                                                                      
                                                                                                                     
                                                                               --------------------------------      
TOTAL TAXES PAYABLE                                                                 0           0          0         
- -------------------                                                                                                  
                                                                               --------------------------------      
                                                                                                                     
POST PETITION SECURED DEBT                                                                                 
- --------------------------                                                                                 
                                                                                                                     
                                                                                                                     
ACCRUED INTEREST PAYABLE                                                                                             
                                                                                                                     
                                                                                                                     
                                                                               --------------------------------      
TOTAL POST PETITION SECURED DEBT                                                    0           0          0         
- --------------------------------                                                                                     
                                                                               --------------------------------      
                                                                                                                     
                                                                                                                     
POST PETITION UNSECURED DEBT
- ----------------------------                                                                                         
TRADE ACCOUNTS PAYABLE & OTHER:                                                                                      
Trade Accounts Payable (see attached schedules) Unsecured debt-Bank                                                  
processed automatic funds transfer debit                                                                             
      to pay bond interest on December 1 against insufficient funds balance.                                         
     This created an overdraft of  $8,294 and an unsecured debt obligation                                           
     to the bank.                                                                                                    
Accrued expenses-Deferred Decontamination                                                                            
       & Decommissioning Expenses                                                                                    
                                                                                                                     
                                                                               --------------------------------      
TOTAL TRADE ACCOUNTS PAYABLE & OTHER                                                0           0          0         
                                                                               --------------------------------      
                                                                                                                     
TOTAL ALL POST PETITION LIABILITIES                                                 0           0          0         
                                                                               ================================      
</TABLE>
<PAGE>   7




                                INCOME STATEMENT                     FORM OPR-5

CASE NAME:        M4 ENVIRONMENTAL, LP
CASE NUMBER:      97-21389-CJK


                                                            MONTH ENDED  5/31/98


<TABLE>
<CAPTION>
                                                           PRE          POST             MONTH      MONTH    MONTH
                                                        PETITION      PETITION           ENDED      ENDED    ENDED
                                                        12/3/97       12/31/97          1/31/98   2/28/98  3/31/98
                                                        ----------------------------------------------------------------

<S>                                                     <C>           <C>               <C>       <C>      <C>

NET REVENUE (INCOME)
                                                        -----------------------------------------------------------------

COST OF GOODS SOLD
  Salaries & wages
  Less: Salaries & wages capitalized in fixed assets
  Benefits
  Bad debt expense
  Cost of goods sold
  Decontamination & disposal
  Disposal costs-secondary wastes
  Financing costs
  Insurance
  Legal services
  Materials
  Office expense & supplies
  Other
  Outside services
  Professional services
  Rent-equipment
  Rent-office/buildings
  Supplies-processing
  Taxes                                                                                                            1,411
  Telephone
  Transportation
  Travel & entertainment
  Utilities

                                                        -----------------------------------------------------------------
TOTAL COST OF GOODS SOLD                                       0             0                 0          0        1,411
                                                        -----------------------------------------------------------------

INCOME BEFORE INTEREST, DEPRECIATION,
  TAXES, OR EXTRAORDINARY EXPENSES                             0             0                 0          0       (1,411)
                                                        -----------------------------------------------------------------

INTEREST EXPENSE                                                          (515)
DEPRECIATION AND AMORTIZATION                                          148,182           136,352    136,353      136,353
INCOME TAX EXPENSE (BENEFIT)
REORGANIZATION EXPENSE
OTHER (INCOME) EXPENSE
(GAIN) LOSS ON SALE OF ASSETS
                                                        -----------------------------------------------------------------

NET INCOME (LOSS)                                              0      (147,667)         (136,352)  (136,353)    (137,764)
                                                        =================================================================

</TABLE>


<TABLE>
<CAPTION>
                                                         MONTH    MONTH    MONTH     MONTH
                                                         ENDED    ENDED    ENDED     ENDED
                                                        4/30/98  5/31/98
                                                      -------------------------------------

<S>                                                     <C>      <C>       <C>       <C>

NET REVENUE (INCOME)
                                                      -------------------------------------

COST OF GOODS SOLD
  Salaries & wages
  Less: Salaries & wages capitalized in fixed assets  
  Benefits 
  Bad debt expense 
  Cost of goods sold 
  Decontamination & disposal 
  Disposal costs-secondary wastes 
  Financing costs 
  Insurance  
  Legal services
  Materials 
  Office expense & supplies 
  Other 
  Outside services 
  Professional services 
  Rent-equipment 
  Rent-office/buildings 
  Supplies-processing
  Taxes                                                                                        
  Telephone                                                                                    
  Transportation                                                                               
  Travel & entertainment                                                                       
  Utilities                                                                                    
                                                                                               
                                                      -------------------------------------    
TOTAL COST OF GOODS SOLD                                     0         0         0        0     
                                                      -------------------------------------    
                                                                                               
INCOME BEFORE INTEREST, DEPRECIATION,                                                          
  TAXES, OR EXTRAORDINARY EXPENSES                           0         0         0        0     
                                                      -------------------------------------    
                                                                                               
INTEREST EXPENSE                                                                              
DEPRECIATION AND AMORTIZATION                          136,353   136,353                      
INCOME TAX EXPENSE (BENEFIT)                                                                   
REORGANIZATION EXPENSE                                                                         
OTHER (INCOME) EXPENSE                                                                         
(GAIN) LOSS ON SALE OF ASSETS                                                                  
                                                      -------------------------------------    
                                                                                               
NET INCOME (LOSS)                                     (136,353) (136,353)       0         0
                                                      =====================================    
</TABLE>
<PAGE>   8
                      STATEMENT OF SOURCES AND USES OF CASH           FORM OPR-6

CASE NAME:    M4 ENVIRONMENTAL, LP
CASE NUMBER:  97-21389-CJK






                                                            MONTH ENDED 5/31/98

<TABLE>
<CAPTION>
                                                                                           TOTAL
                                                              PRE           POST           MONTH         MONTH           MONTH
                                                            PETITION      PETITION         ENDED         ENDED           ENDED
                                                            12/1-12/2     12/3-12/31     12/31/97       1/31/98         2/28/98
                                                            -----------------------------------------------------------------------



CASH FLOWS-OPERATING ACTIVITIES:
<S>                                                         <C>          <C>             <C>           <C>             <C>
Net Earnings (Loss)                                                      (147,667)       (147,667)     (136,352)       (136,353)

Adjustments to Reconcile Net Earnings to
Net Cash Provided (Used) by Operating Activities:
         Depreciation & Amortization                                      148,182         148,182       136,352         136,353
         Decrease (Increase)-Accounts Receivable                                0               0             0               0
         Decrease (Increase)-Inventories                                        0               0             0               0
         Decrease (Increase)-Prepaid Expenses                                   0               0             0               0
         Decrease (Increase)-Other Assets                                       0               0             0               0
         Increase (Decrease)-Pre Petition Liabilities                     (62,075)        (62,075)      (63,759)              0
         Increase (Decrease)-Post Petition Liabilities                      8,295           8,295        63,759               0

                                                            ------------------------------------------------------------------------
Net Cash Provided (Used) by Operating Activities                0         (53,265)        (53,265)            0               0
                                                            ------------------------------------------------------------------------

Cash Flows Used in Investing Activities
         Capital Expenditures                                                   0               0             0               0
         Sale of Net Fixed Assets
                                                            ------------------------------------------------------------------------
Net Cash Provided (Used) in Investing Activities                0               0               0             0               0
                                                            ------------------------------------------------------------------------

Cash Flows From Financing Activities:
         Increase (Decrease)-Morgens Waterfall                                  0               0             0               0
         Increase (Decrease)-Shareholder Valuations

         Purchase of Treasury Stock-Preferred Shares

                                                            ------------------------------------------------------------------------
Net Cash Provided (Used) in Financing Activities                0               0               0             0               0
                                                            ------------------------------------------------------------------------

NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS            0         (53,265)        (53,265)            0               0

Cash and Cash Equivalents at Beginning of Period                           53,265          53,265             0               0
                                                            ------------------------------------------------------------------------

Cash and Cash Equivalents at End of Period                      0               0               0             0               0
                                                            ========================================================================
</TABLE>


<TABLE>
<CAPTION>
                                                           MONTH          MONTH          MONTH
                                                           ENDED          ENDED          ENDED
                                                          3/31/98        4/30/98        5/31/98
                                                       ----------------------------------------
<S>                                                    <C>             <C>            <C>
CASH FLOWS-OPERATING ACTIVITIES:
Net Earnings (Loss)                                       (137,764)    (136,353)      (136,353)
Adjustments to Reconcile Net Earnings to
Net Cash Provided (Used) by Operating Activities:
         Depreciation & Amortization                       136,353      136,353        136,353
         Decrease (Increase)-Accounts Receivable                 0            0              0
         Decrease (Increase)-Inventories                         0            0              0
         Decrease (Increase)-Prepaid Expenses                    0            0              0
         Decrease (Increase)-Other Assets                        0            0              0
         Increase (Decrease)-Pre Petition Liabilities        1,106            0              0
         Increase (Decrease)-Post Petition Liabilities         305            0              0

                                                        ---------------------------------------
Net Cash Provided (Used) by Operating Activities                 0            0              0
                                                        ---------------------------------------
Cash Flows Used in Investing Activities
         Capital Expenditures                                    0            0              0
         Sale of Net Fixed Assets
                                                        ---------------------------------------
Net Cash Provided (Used) in Investing Activities                 0            0              0
                                                        ---------------------------------------
Cash Flows From Financing Activities:
         Increase (Decrease)-Morgens Waterfall                   0            0              0
         Increase (Decrease)-Shareholder Valuations

         Purchase of Treasury Stock-Preferred Shares
                                                        ---------------------------------------
Net Cash Provided (Used) in Financing Activities                 0            0              0
                                                        ---------------------------------------

NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS             0            0              0

Cash and Cash Equivalents at Beginning of Period                 0            0              0
                                                        ---------------------------------------
Cash and Cash Equivalents at End of Period                       0            0              0
                                                        =======================================
</TABLE>

<PAGE>   9
                                   CHAPTER 11                    ATTACHMENT 1
                            MONTHLY OPERATING REPORT
                        MONTHLY REPORTING QUESTIONNAIRE

CASE NAME:    M4 ENVIRONMENTAL, LP
CASE NUMBER:  97-21389-CJK



                                                             MONTH ENDED 5/31/98
                                                    ----------------------------


                                     PAGE 1


1.   PAYROLL

         State the amount of all executive wages paid and taxes withheld and
         paid.

<TABLE>
<CAPTION>
         Name and Title of                     Date      Wages Paid         Taxes Withheld
         Executive                             Paid     Gross     Net      Due        Paid
         -----------------                   -----------------------------------------------
<S>                                          <C>       <C>       <C>       <C>       <C>


         NONE



                                                       -------------------------------------

         TOTAL EXECUTIVE PAYROLL                              0        0        0         0
                                                       =====================================
</TABLE>






2.  INSURANCE
         Is Workers' Compensation and other insurance in effect?  Yes
                                                                ---------
         Are payments current?                                    Yes
                                                                ---------

         If any policy has lapsed, been replaced or renewed, state so in the
         schedule below. Attach a copy of the new policy's binder or coverage
         page.

<TABLE>
<CAPTION>
                                                                                           DATE
                                             COVERAGE   POLICY  EXPIRATION   PREMIUM     COVERAGE
TYPE               CARRIER NAME               AMOUNT    NUMBER    DATE        AMOUNT    PAID THRU
- -------------------------------------------------------------------------------------------------
<S>                <C>                       <C>        <C>     <C>          <C>        <C>


</TABLE>

                  SEE ATTACHED INSURANCE EXPIRATION CERTIFICATE
<PAGE>   10
                                   CHAPTER 11                    ATTACHMENT 1
                            MONTHLY OPERATING REPORT
                        MONTHLY REPORTING QUESTIONNAIRE

CASE NAME:    M4 ENVIRONMENTAL, LP
CASE NUMBER:  97-21389-CJK

                                                                          PAGE 2


3.  BANK ACCOUNTS

<TABLE>
<CAPTION>
                                                                 M4 LP
                                                                OPERATING           TOTAL
                                                                ---------         ----------


<S>                                                            <C>                <C>
Bank Name                                                       SUNTRUST

Account Number                                                  0005618983


BEGINNING BOOK BALANCE                                            (8,294)            (8,294)

PLUS:    Deposits-Collections of A/R
         Other Receipts
         Loan Advances

LESS:    Disbursements                                                                    0
         Payroll
         Returned Checks
         Loan Repayments

OTHER:   Adjustments
         Transfers In (Out)

                                                                ---------         ----------

ENDING BOOK BALANCE                                               (8,294)            (8,294)
                                                                =========         ==========
</TABLE>


4.  POST PETITION PAYMENTS TO PROFESSIONALS AND ON PRE PETITION DEBTS

         List any post petition payments to professional and payments on
         Pre-petition debts in the schedule below.

<TABLE>
<CAPTION>
         Payments To/On                       Amount     Date   Check #
         -----------------                   ----------------------------
<S>                                          <C>         <C>    <C>

         Professionals (attorneys,
         accountants, etc.):




                                               NONE



                                               -------
                                                     0
                                               =======

         PRE-PETITION DEBTS


                                               NONE



                                               -------
         Total payments of pre-petition debts        0
                                               =======
</TABLE>
<PAGE>   11
                         INSURANCE EXPIRATION STATEMENT


<TABLE>
<CAPTION>
                                                   INSURANCE      COVERAGE  POLICY    EXPIRATION      PREMIUM        COVERAGE
CARRIER NAME AND ADDRESS      TYPE                   AGENT         AMOUNT   NUMBER       DATE         AMOUNT         PAID THRU
- ------------------------------------------------------------------------------------------------------------------------------
<S>                          <C>                 <C>             <C>       <C>       <C>             <C>            <C>

              SEE ATTACHED
</TABLE>

         I declare under penalty of perjury that the information provided on the
         attachments hereto is true and correct to the best of my knowledge and
         belief.


         Date:         5/26/98





                                   Molten Metal Technology, Inc.


                                   By: /s/ F. Gordon Bitter
                                      ---------------------------
                                         F. Gordon Bitter
                                         Chief Executive Officer

                                   MMT of Tennessee, Inc.


                                   By: /s/ F. Gordon Bitter
                                      ---------------------------
                                         F. Gordon Bitter
                                         Vice President

                                   M4 Environmental, L.P.


                                   By: /s/ F. Gordon Bitter
                                      ---------------------------
                                   M4 Environmental Management, Inc.
                                         General Partner


                                   By: /s/ F. Gordon Bitter
                                      ---------------------------
                                         F. Gordon Bitter
                                         Vice President

                                   MMT Federal Holdings, Inc.


                                   By: /s/ F. Gordon Bitter
                                      ---------------------------
                                         F. Gordon Bitter
                                         Vice President

<PAGE>   12
                   MOLTEN METAL TECHNOLOGY INSURANCE SCHEDULE

                                   EXHIBIT A



<TABLE>
<CAPTION>
====================================================================================================================================
                Carrier Name & Address                          Type                       Broker                 Limits

====================================================================================================================================

<S>                                             <C>                                        <C>                 <C>
Commerce & Industry Insurance Co.               General Liability                             Aon                 $1,000,000
70 Pine Street                                  Automobile Liability                          Aon                 $1,000,000
New York, NY   10270                            Excess Liability - 1st layer                  Aon                $20,000,000
                                                                                                                excess of $1M

New Hampshire Insurance Co.                     Workers Compensation                          Aon               Statutory
70 Pine Street                                  Workers Compensation - CA                     Aon               Statutory
New York NY  10270                              Employers' Liability                          Aon               $1,000,000

American International Specialty Lines          Pollution Liability - MA/TN                   Aon               $3,000,000
   Insurance Co.                                Pollution Liability - TX                      Aon               $1,000,000
70 Pine Street
New York NY  10270


Executive Risk Indemnity Company                Fidelity                                      Aon                 $500,000
P.O. Box 91394                                  Fiduciary                                     Aon               $2,000,000
Chicago, IL   60693

Executive Risk Indemnity Company                Directors & Officers Liability                Aon              $10,000,000
P.O. Box 91394
Chicago, IL   60693

CNA Insurance Companies                         Foreign Liability                             Aon               $1,000,000
180 Maiden Lane
New York, NY  10038

Allendale Mutual Insurance Co.                  Property                                      Aon              147,000,000
Allendale Park                                                                                                    Blanket
Johnston, RI  02919

American Nuclear Insurers                       Nuclear All Risk Property                 J&H/M&M               $45,000,000
Town Center                                     Nuclear Liability Facility Form - TN      J&H/M&M               $50,000,000
29 South Main Street                            Master Worker Certificate - TN            J&H/M&M              $200,000,000
West Hartford, CT 06107                                                                                         Shared Agg.
</TABLE>


<TABLE>
<CAPTION>
============================================================================================================---============
                Carrier Name & Address      Policy                Expiration             Premium                     Paid
                                            Number                   Date                                            Thru
===========================================================================================================================

<S>                                       <C>                         <C>                <C>                   <C>
Commerce & Industry Insurance Co.             340-94-76                  12/3/98              $53,000              Current
70 Pine Street                                766-56-11                  12/3/98               $3,540              Current
New York, NY   10270                          606-23-31                  12/3/98              $43,185              Current


New Hampshire Insurance Co.                 WC588-59-75                  12/3/98             $111,250              Current
70 Pine Street                              WC588-59-77                  12/3/98                 $753              Current
New York NY  10270                          WC588-59-75                  12/3/98                inclu.             Current
                                            and -77[CA]


American International Specialty Lines       8199951                     12/3/98              $28,342              Current
   Insurance Co.                             8199950                     12/3/98              $16,919              Current
70 Pine Street
New York NY  10270


Executive Risk Indemnity Company          751-118812-98                   5/9/99               $6,000              Current
P.O. Box 91394                            751-118834-98                   5/9/99               $6,000              Current
Chicago, IL   60693

Executive Risk Indemnity Company          751-091628-98                  1/19/99             $350,000              Current
P.O. Box 91394
Chicago, IL   60693

CNA Insurance Companies                   PST 00 9648288                  2/1/99               $2,000              Current
180 Maiden Lane
New York, NY  10038

Allendale Mutual Insurance Co.                CC626                      12/2/99             $170,000              Current
Allendale Park
Johnston, RI  02919

American Nuclear Insurers                      98262                      1/1/99              $97,500              Current
Town Center                                   NF-0338                   12/31/98             $124,215              Current
29 South Main Street                          NW-0235                   12/31/98                 $550          Not yet invoiced
West Hartford, CT 06107
</TABLE>






                                    Page 12
<PAGE>   13
                   MOLTEN METAL TECHNOLOGY INSURANCE SCHEDULE
                                   EXHIBIT A



<TABLE>
<CAPTION>

==================================================================================================================================
                Carrier Name & Address                          Type                       Broker                 Limits

==================================================================================================================================
<S>                                             <C>                                       <C>                <C>

                                                Nuclear Supplier's & Transp.               J&H/M&M              $15,000,000
                                                Nuclear Liability Facility Form - SC       J&H/M&M              $10,000,000
                                                Nuclear Foreign Supplier's & Transp.       J&H/M&M              $10,000,000
                                                Master Worker Certificate - SC             J&H/M&M             $200,000,000
                                                                                                                Shared Agg.
                                                Nuclear Facility Liability - Comm. Park    J&H/M&M              $10,000,000
                                                Master Worker Certificate - Comm. Park     J&H/M&M             $200,000,000
                                                                                                                Shared Agg.

American International Specialty                Pollution Legal and Closure/Post Closure   J&H/M&M               $3,000,000
   Lines Ins. Co.                                                                                            Pollution Legal
Harborside Financial Center                                                                                      $3,400,000
401 Plaza 3                                                                                                       Closure
Jersey City, NJ   07311
</TABLE>


<TABLE>
<CAPTION>
===============================================================================================================-------------====
                Carrier Name & Address     Policy                Expiration             Premium                Paid
                                           Number                   Date                                       Thru
====================================================================================================-----------=================
<S>                                     <C>                      <C>                    <C>               <C>

                                           NS-0539                   12/31/98              $8,670                Current
                                           NF-0329                   12/31/98             $13,590                Current
                                             TBD                     12/31/98                 TBD         Based on Foreign Sales
                                           NW-0237                   12/31/98                $550            Not yet invoiced

                                           NF-0337                   12/31/98             $39,568                Current
                                           NW-0234                   12/31/98                $550            Not yet invoiced


American International Specialty          8183013                    10/15/00             $94,400                Current
   Lines Ins. Co.                                                   Poll. Legal
Harborside Financial Center                                           12/7/00             $425,000               Current
401 Plaza 3                                                           Closure
Jersey City, NJ   07311
</TABLE>

Note: The premium for the Pollution Legal/Closure policy (AISLIC no. 8183013) is
billed in 5 annual installments of $19,280 (Pollution Legal) and $85,000
(Closure). To date, the first three installments are paid in full. The remaining
installments come due on the anniversary date. Thus, the remaining installments
for 12/15/98 and 1999 for Pollution and for 1/4/99 and 2000 for Closure, are
unbilled and unpaid.


                                    Page 13
<PAGE>   14
                   MOLTEN METAL TECHNOLOGY INSURANCE SCHEDULE
                                   EXHIBIT A

<TABLE>
<CAPTION>
===================================================================================================================================
                Carrier Name & Address                          Type                     CO         Limits          Expiration
                                                                                       Entity                          Date
===================================================================================================================================

<S>                                            <C>                                     <C>          <C>             <C>
Blue Cross & Blue Shield of RI                 Full Coverage Medical                   MMT                            5/1-5/31/98
PO Box 1057
Providence, RI
02901-1057

Delta Dental Plan                              Self Funded Dental                      MMT                            5/1-5/31/98
PO Box 5-0198
Woburn, MA 01815-0198


Fortis Benefits Insurance Co.                  Employee Funded-Supplemental Life       MMT                            5/1-5/31/98
PO Box 27-644-1
Kansas City, MO 64180-0644


Fortis Benefits Insurance Co.                  Employee Funded-Supplemental Life       MMT TN                         5/1-5/31/98
PO Box 27-644-1
Kansas City, MO 64180-0644


Fortis Self Funded Admin Services              Medical Stop Loss and Life Insurance    MMT                            5/1-5/31/98
10159 Wayzata Boulevard                        Premiums
Minnetonka, MN 55305


Fortis Self Funded Admin Services              Medical Stop Loss and Life Insurance    MMT TN                         5/1-5/31/98
10159 Wayzata Boulevard                        Premiums
Minnetonka, MN 55305


Fortis Self Funded Admin Services              Self Funded Medical Claims              MMT &                          5/1-5/31/98
10159 Wayzata Boulevard                                                                MMT TN
Minnetonka, MN 55305


UNUM Life Insurance                            Employee Funded Long Term Disability    MMT                            5/1-5/31/98
</TABLE>









<TABLE>
<CAPTION>
============================================================================================
                Carrier Name & Address             Premium               Paid
                                                                         Thru
============================================================================================

<S>                                                <C>                 <C>
Blue Cross & Blue Shield of RI                     $10,622             Current
PO Box 1057
Providence, RI
02901-1057

Delta Dental Plan                                     None             Current
PO Box 5-0198                                                          Current
Woburn, MA 01815-0198                                                  Current


Fortis Benefits Insurance Co.                       $1,968             Current
PO Box 27-644-1
Kansas City, MO 64180-0644


Fortis Benefits Insurance Co.                       $1,185             Current
PO Box 27-644-1
Kansas City, MO 64180-0644


Fortis Self Funded Admin Services                  $10,960             Current
10159 Wayzata Boulevard
Minnetonka, MN 55305


Fortis Self Funded Admin Services                   $8,231             Current
10159 Wayzata Boulevard
Minnetonka, MN 55305


Fortis Self Funded Admin Services                  $50,000             Current
10159 Wayzata Boulevard
Minnetonka, MN 55305


UNUM Life Insurance                                 $1,951             Current
</TABLE>


                                 Page 14 of 15
<PAGE>   15
<TABLE>
<CAPTION>

                   MOLTEN METAL TECHNOLOGY INSURANCE SCHEDULE
                                   EXHIBIT A

===================================================================================================================================
                Carrier Name & Address                          Type                     CO         Limits          Expiration
                                                                                       Entity                          Date
===================================================================================================================================
<S>                                            <C>                                     <C>                            <C>
PO Box 7777-W0050
Philadelphia, PA
19175-0050



UNUM Life Insurance                            Short Term Disability                   MMT                            5/1-5/31/98
2211 Congress Street
Portland, ME 04122
</TABLE>



<TABLE>
<CAPTION>
============================================================================================
                Carrier Name & Addr                Premium               Paid
                                                                         Thru
============================================================================================
<S>                                             <C>                      <C>
UNUM Life Insurance                             $2,110                   Current
2211 Congress Street
Portland, ME 04122
</TABLE>



                                 Page 15 of 15



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