EMCOR GROUP INC
8-K, 1996-06-26
ELECTRICAL WORK
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                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                   FORM 8-K

              Current Report Pursuant to Section 13 or 15(d) of
                          The Securities Act of 1934


Date of Report (Date of earliest event reported)      June 19, 1996
- ------------------------------------------------------------------------------


                              EMCOR Group, Inc.
- ------------------------------------------------------------------------------
              (Exact Name of Registrant as Specified in Charter)




         Delaware                 0-2315                 11-2125338
- ------------------------------------------------------------------------------
      (State or other           (Commission           (I.R.S. Employer
        jurisdiction            File Number)         Identification No.)
      of incorporation)



     101 Merritt Seven, Norwalk, CT                            06851
 ----------------------------------------                   -----------
 (Address of principal executive offices)                    (Zip Code)



Registrant's telephone number, including area code (203)849-7800
                                                   -------------------



                                     N/A
- ------------------------------------------------------------------------------
        (Former Name or Former Address, if Changed Since Last Report.)



                           Exhibit Index is located
                                  at Page 4
                                Page 1 of 114

<PAGE>




Item 5.  Other Events

On June 21, 1996,  EMCOR Group,  Inc. issued a press release  regarding a Credit
Agreement by and among it and Certain of Its  Subsidiaries  and Harris Trust and
Savings  Bank  individually  and as Agent  and the  Lenders  which are or become
parties  thereto  dated as of June 19,  1996.  A copy of the  press  release  is
attached hereto as Exhibit 99 and is incorporated herein by reference.

Item 7.  Financial Statements, Pro Forma Financial Information and Exhibits

(c)  Exhibits:

Exhibit No.       Description

4                 *           U.S.  $100,000,000 Credit Agreement by and among
                  EMCOR  Group,  Inc.  and  Certain  of Its  Subsidiaries  and
                  Harris Trust and Savings Bank  individually and as Agent and
                  the Lenders which are or become parties  thereto dated as of
                  June 19, 1996.

99                *           Press Release issued June 21, 1996.




















*                 Filed herewith.




<PAGE>



      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.

                                EMCOR Group, Inc.


                                By /s/ Frank T. MacInnis
                                   ---------------------
                                Frank T. MacInnis
                                Chairman, President and
                                Chief Executive Officer


Dated:  June 25, 1996
































<PAGE>





Exhibit No.       Description
- -----------------------------

4     **          U.S.  $100,000,000 Credit Agreement by and among
                  EMCOR  Group,  Inc.  and  Certain  of Its  Subsidiaries  and
                  Harris Trust and Savings Bank  individually and as Agent and
                  the Lenders which are or become parties  thereto dated as of
                  June 19, 1996.

99    *           Press Release issued June 21, 1996.




















*                 Filed herewith.

<PAGE>





                         U.S. $100,000,000

                          CREDIT AGREEMENT

                            BY AND AMONG

                         EMCOR GROUP, INC.

                                AND

                    CERTAIN OF ITS SUBSIDIARIES
                                AND

                   HARRIS TRUST AND SAVINGS BANK

                     INDIVIDUALLY AND AS AGENT

                                AND

                            THE LENDERS

                 WHICH ARE OR BECOME PARTIES HERETO

                     DATED AS OF JUNE 19, 1996








<PAGE>





                              Table of Contents

SECTION 1 THE REVOLVING CREDIT................................................10

Section 1.1. Revolving Credit.................................................10
Section 1.2. Revolving Loans..................................................11
Section 1.3. Letters of Credit................................................11
     (a) General Terms........................................................11
     (b) Applications.........................................................11
     (c) The Reimbursement Obligation.........................................12
     (d) The Participating Interests..........................................13
     (e) Indemnification......................................................13
Section 1.4. The Sublimit.....................................................14
Section 1.5. Manner of Borrowing Revolving Loans..............................14
     (a) Generally............................................................14
     (b) Agent Reliance on Bank Funding.......................................14
Section 1.6. Appointment of Company as Agent for Borrowers;
             Reliance by Agent................................................15
     (a) Appointment..........................................................15
     (b) Reliance.............................................................15

SECTION 2. INTEREST...........................................................15

Section 2.1. Rate.............................................................15
Section 2.2. Computation of Interest..........................................15
Section 2.3. Capital Adequacy.................................................16

SECTION 3. FEES, PAYMENTS, REDUCTIONS, APPLICATIONS AND NOTATIONS.............16

Section 3.1. Commitment Fee...................................................16
Section 3.2. Other Fees.......................................................16
Section 3.3. Letter of Credit Fees............................................16
Section 3.4. Voluntary Prepayments............................................17
Section 3.5. Mandatory Prepayment.............................................17
Section 3.6. Voluntary Terminations...........................................17
Section 3.7. Place and Application............................................17
Section 3.8. Notations and Requests...........................................19

SECTION 4. THE COLLATERAL AND THE GUARANTEES..................................19

Section 4.1. The Collateral...................................................19
Section 4.2. The Guarantees...................................................20


<PAGE>




SECTION 5. REPRESENTATIONS AND WARRANTIES.....................................20

Section 5.1.  Organization and Qualification..................................20
Section 5.2.  Subsidiaries....................................................20
Section 5.3.  Corporate Authority and Validity of Obligations.................21
Section 5.4.  Use of Proceeds; Margin Stock...................................21
Section 5.5.  Financial Reports...............................................22
Section 5.6.  No Material Adverse Change......................................22
Section 5.7.  Full Disclosure.................................................22
Section 5.8.  Good Title......................................................22
Section 5.9.  Litigation and Other Controversies..............................23
Section 5.10. Taxes...........................................................23
Section 5.11. Approvals.......................................................23
Section 5.12. Affiliate Transactions..........................................23
Section 5.13. Investment Company; Public Utility Holding Company..............23
Section 5.14. ERISA...........................................................23
Section 5.15. Compliance with Laws............................................24
Section 5.16. Other Agreements................................................24
Section 5.17. No Default......................................................24

SECTION 6. CONDITIONS PRECEDENT...............................................24

Section 6.1.  All Credit Utilization..........................................24
Section 6.2.  Initial Credit Utilization......................................25
Section 6.3.  Activation of the Commitments...................................27

SECTION 7.   COVENANTS........................................................28

Section 7.1.  Maintenance of Business.........................................28
Section 7.2.  Maintenance of Property.........................................29
Section 7.3.  Taxes and Assessments...........................................29
Section 7.4.  Insurance.......................................................29
Section 7.5.  Financial Reports and Rights of Inspection......................29
Section 7.6.  Adjusted Tangible Net Worth.....................................31
Section 7.7.  Leverage Ratio..................................................32
Section 7.8.  Interest Coverage Ratio.........................................32
Section 7.9.  Current Ratio...................................................32
Section 7.10. Indebtedness for Borrowed Money.................................32
Section 7.11. Liens...........................................................33
Section 7.12. Investments, Acquisitions, Loans, Advances and Guarantees ......35
Section 7.13. Capital and Certain other Restricted Expenditures...............38
Section 7.14. Mergers, Consolidations and Sales...............................38
Section 7.15. Maintenance of Restricted Subsidiaries..........................39
Section 7.16. Dividends and Certain Other Restricted Payments.................39
Section 7.17. ERISA...........................................................40
Section 7.18. Compliance with Laws............................................41
Section 7.19. Burdensome Contracts With Affiliates............................41
Section 7.20. Amendments to Subordinated Debt.................................41
Section 7.21. No Changes in Fiscal Year.......................................41
Section 7.22. Formation of Subsidiaries.......................................41
Section 7.23. Change in the Nature of Business................................41

SECTION 8. EVENTS OF DEFAULT AND REMEDIES.....................................42

Section 8.1. Events of Default................................................42
Section 8.2. Non-Bankruptcy Defaults..........................................43
Section 8.3. Bankruptcy Defaults..............................................44
Section 8.4. Collateral for Undrawn Letters of Credit.........................44

SECTION 9.   DEFINITIONS INTERPRETATIONS......................................44

Section 9.1. Definitions......................................................44
Section 9.2. Interpretation...................................................54

SECTION 10. THE AGENT AND THE ISSUERS.........................................55

Section 10.1. Appointment and Authorization...................................55
Section 10.2. Rights as a Lender..............................................55
Section 10.3. Standard of Care................................................55
Section 10.4. Costs and Expenses..............................................56
Section 10.5. Indemnity.......................................................56
Section 10.6. Conflict........................................................57

SECTION 11.   MISCELLANEOUS...................................................57

Section 11.1.  Withholding Taxes..............................................57
Section 11.2.  Holidays.......................................................58
Section 11.3.  No Waiver, Cumulative Remedies.................................58
Section 11.4.  Waivers, Modifications and Amendments..........................59
Section 11.5.  Costs and Expenses.............................................59
Section 11.6.  Stamp Taxes....................................................60
Section 11.7.  Survival of Representations and Indemnities....................60
Section 11.8.  Construction...................................................60
Section 11.9.  Addresses for Notices..........................................60
Section 11.10. Obligations Several............................................60
Section 11.11. Headings.......................................................60
Section 11.12. Severability of Provisions.....................................60
Section 11.13. Counterparts...................................................61
Section 11.14. Binding Nature and Governing Law...............................61
Section 11.15. Entire Understanding...........................................61
Section 11.16. Extensions of the Commitments..................................61
Section 11.17. Participations.................................................61
Section 11.18. Assignment Agreements..........................................61
Section 11.19. Terms of Collateral Documents not Superseded...................62
Section 11.20. Personal Jurisdiction..........................................63
     (a) Exclusive Jurisdiction...............................................63
     (b) Other Jurisdictions..................................................63
Section 11.21. Currency.......................................................63
Section 11.22. Currency Equivalence...........................................63
Section 11.23. One Lender.....................................................64

Signature Page................................................................65




EXHIBIT A - Revolving Credit Note 
EXHIBIT B - Form of Opinion of Counsel 
EXHIBIT C - Borrowing Base Certificate  
EXHIBIT D - Compliance  Certificate  
EXHIBIT E - Assignment and Acceptance  
SCHEDULE I - Compliance  Calculations  
SCHEDULE 5.2 - Subsidiaries 
SCHEDULE 7.10 - Indebtedness 
SCHEDULE 7.11 - Liens
SCHEDULE 7.12 - Investments, Loans, Advances and Guarantees







<PAGE>





                              EMCOR GROUP, INC.

                               CREDIT AGREEMENT
Harris Trust and Savings Bank
Chicago, Illinois

and the other Lenders from time to time party hereto

Gentlemen:

      The  undersigned,   EMCOR  Group,   Inc.,  a  Delaware   corporation  (the
"Company"),  and DYN Specialty Contracting Inc., a Virginia corporation ("DYN"),
apply to you for your  several  commitments,  subject  to all of the  terms  and
conditions  hereof  and  on the  basis  of the  representations  and  warranties
hereinafter  set forth,  to make a  revolving  credit (the  "Revolving  Credit")
available to the Borrowers, all as more fully hereinafter set forth, all for the
purpose of replacing the MES  Revolving  Credit  Agreement  and the  Dynalectric
Revolving Credit Agreement.

SECTION 1.  THE REVOLVING CREDIT.

      Section 1.1. Revolving Credit.  Subject to all of the terms and conditions
hereof,  each Lender,  by its acceptance  hereof,  severally  agrees to extend a
Revolving  Credit to the Borrowers in the amount of its commitment to extend the
Revolving  Credit set forth on the  applicable  signature  page hereof or on the
Assignment  Agreement to which it is a party (its  "Commitment" and cumulatively
for all the  Lenders,  the  "Commitments")  (subject to any  reductions  thereof
pursuant to the terms  hereof)  prior to the  Termination  Date.  Subject to the
terms and conditions  hereof,  such  Revolving  Credit may be availed of by each
Borrower in its discretion  from time to time, be repaid and used again,  during
the period from the date  hereof to and  including  the  Termination  Date.  The
Revolving  Credit,  subject to all of the terms and  conditions  hereof,  may be
utilized by any one or more of the Borrowers in the form of Revolving  Loans and
Letters of Credit, all as more fully hereinafter set forth;  provided,  however,
that the aggregate amount of the Revolving Loans and L/C Obligations outstanding
at any one time  from all the  Borrowers  taken  together  shall not at any time
exceed the lesser of the Activated  Commitments  then in effect or the Borrowing
Base as shown on the most recent Borrowing Base  Certificate;  provided further,
however,  that the aggregate  amount  outstanding at any time on Revolving Loans
made to each  Borrower,  and L/C  Obligations  in  respect  of Letters of Credit
issued  for such  Borrower's  sole or  joint  account,  shall  not  exceed  such
Borrower's  Sublimit as then  determined and computed.  For all purposes of this
Agreement,  where a determination of the used, unused or available amount of the
Commitments is necessary, Credit Utilizations payable in an Alternative Currency
shall be converted into their U.S. Dollar  Equivalent as of the date of issuance
(in the case of a Letter  of  Credit)  and as of the spot date (in the case of a
Borrowing).  Such  conversions  shall  be  made  on  the  date  of  each  Credit
Utilization in an  Alternative  Currency as to that Credit  Utilization  and all
Credit  Utilizations  shall be converted into their U.S. Dollar Equivalent as of
the last day of each month or at the time of each Credit  Utilization should the
Agent so elect;  such  conversions to be based on the  applicable  spot currency
conversion  ratio as reported in the Wall  Street  Journal as of the  applicable
date or time. If the last day of a month is not a Business Day, such  conversion
shall  be made as of the next  Business  Day.  The  obligations  of the  Lenders
hereunder are several and not joint and no Lender shall under any  circumstances
be obligated to extend credit  hereunder in excess of its Activated  Commitment.
The Agent  shall  promptly  notify the Company of such  determination  of a U.S.
Dollar  Equivalent and of the basis therefor.  All Borrowings shall be repaid in
the currency in which they were borrowed.

      Section 1.2.  Revolving Loans.  Subject to all of the terms and conditions
hereof,   the  Revolving  Credit  may  be  availed  of  in  the  form  of  loans
(individually a "Revolving Loan" and collectively the "Revolving  Loans").  Each
Borrowing of Revolving  Loans shall,  except to the extent  otherwise  agreed in
writing by all Lenders,  be made ratably by the Lenders in accordance with their
Percentages.  Each Borrowing of Revolving  Loans shall be in a minimum amount of
$1,000,000 or such greater amount which is an integral multiple of $100,000. All
Revolving Loans made by a Lender to a particular  Borrower shall be evidenced by
a single  Revolving  Credit Note of such  Borrower,  (individually  a "Revolving
Credit Note" and collectively the "Revolving Credit Notes") payable to the order
of such Lender,  each Revolving Credit Note to be in the form (with  appropriate
insertions)  attached  hereto as Exhibit A. Without regard to the face principal
amount of each Lender's  Revolving  Credit Note, the actual  principal amount at
any time  outstanding and owing by each Borrower on account thereof shall be the
sum of all Revolving  Loans then or  theretofore  made thereon by such Lender to
such Borrower less all payments actually received thereon.

      Section 1.3.      Letters of Credit

      (a) General Terms. Subject to the terms, conditions and limitations hereof
(including  those set forth in Section  1.1  hereof),  as part of the  Revolving
Credit,  the  Applicable  Issuer  shall  issue  Financial  Letters  of Credit or
Performance Letters of Credit (each a "Letter of Credit") for the account of any
one or more of the Borrowers in U.S.  Dollars or an  Alternative  Currency in an
aggregate  undrawn face amount up to the amount of the L/C  Commitment as to all
Borrowers,  but  subject  to any  applicable  Sublimit  in the  case  of a given
Borrower.  Each Letter of Credit shall be issued by the Applicable  Issuer,  but
each Lender  shall be  obligated  to  reimburse  the  Applicable  Issuer for its
Percentage  of the  amount of each  drawing  thereunder  and,  accordingly,  the
undrawn  face  amount of each  Letter of Credit  shall  constitute  usage of the
Commitment of each Lender pro rata in accordance with each Lender's  Percentage.
Each  Letter of Credit  shall  conform to the  Issuer's  policies as to form and
shall be a Letter of Credit which the Applicable Issuer may lawfully issue. Each
Letter of Credit  shall  support  payment of an  obligation  of the Borrower who
applies for same or an  obligation of a Subsidiary of same which is a Restricted
Subsidiary  or of a joint  venture  described  in Section  7.12(m) or 7.12(n) of
which the applicant or one of its Restricted Subsidiaries is a member.

      (b) Applications.  At any time before the Termination Date, the Applicable
Issuer shall,  subject to all of the terms and conditions hereof, at the request
of the Company  (which is acting on behalf of the Borrowers  pursuant to Section
1.6  hereof),  issue one or more Letters of Credit for the account of any one or
more of the Borrowers,  in a form  satisfactory to the Applicable  Issuer, in an
aggregate face amount as set forth above, upon the receipt of an application for
the  relevant  Letter  of  Credit  in the  form  customarily  prescribed  by the
Applicable Issuer for the type of Letter of Credit in question, duly executed by
the  Borrower  for whose  account  such  Letter of Credit  was  issued  (each an
"Application").  Each Letter of Credit issued  hereunder shall (a) be payable in
U.S.  Dollars  or an  Alternative  Currency  and (b)  expire  not later than the
earlier of (i) eighteen  (18) months from the date of issuance (or be cancelable
not later than  eighteen (18) months from the date of issuance and each renewal)
or  (ii)  the  Termination  Date.  Notwithstanding  anything  contained  in  any
Application  to the contrary,  (i) the applicable  Borrower's  obligation to pay
fees in connection  with each Letter of Credit shall be as exclusively set forth
in Section 3.3 hereof,  (ii) except as otherwise provided in Section 3.5 hereof,
prior to the existence of an Event of Default,  the  Applicable  Issuer will not
call for the funding by the Borrower of any amount under a Letter of Credit,  or
any  other  form of  collateral  security  for  the  Borrower's  obligations  in
connection  with such Letter of Credit,  before being  presented  with a drawing
thereunder,  and (iii) if the Applicable Issuer is not timely reimbursed for the
amount of any drawing under a Letter of Credit on the date such drawing is paid,
the Borrower's  obligation to reimburse the Applicable  Issuer for the amount of
such drawing shall bear interest (which the relevant Borrower hereby promises to
pay) from and after the date such  drawing is paid at a rate per annum  equal to
the sum of 2% plus the  Applicable  Margin plus the  Applicable  Index Rate from
time to time in  effect.  The  Issuers  will  promptly  notify the Agent of each
request  for a Letter of Credit and of  issuance  of a Letter of  Credit.  If an
Issuer issues any Letters of Credit with expiration dates that are automatically
extended  unless such Issuer gives notice that the  expiration  date will not so
extend beyond its then  scheduled  expiration  date,  such Issuer will give such
notice of  non-renewal  before  the time  necessary  to prevent  such  automatic
extension if before such required  notice date (i) the  expiration  date of such
Letter of Credit if so extended would be after the  Termination  Date,  (ii) the
Commitments  have been  terminated,  or (iii) an Event of Default exists and the
Required  Lenders  have  given the  Issuer  instructions  not to so  permit  the
extension of the expiration date of such Letter of Credit.  Without limiting the
generality of the foregoing,  each Issuer's obligation to issue, amend or extend
the  expiration  date of a Letter of  Credit is  subject  to the  conditions  of
Section 6, the other terms of this Section 1.3 and the other  provisions of this
Agreement and such Issuer will not issue, amend or extend the expiration date of
any  Letter of Credit if any  Lender  notifies  such  Issuer of any  failure  to
satisfy or otherwise comply with such conditions, terms and other provisions and
directs the Issuer not to take such action.

      (c) The Reimbursement  Obligation.  Subject to Section 1.3(b) hereof,  the
obligation  of a Borrower to reimburse  the  Applicable  Issuer for all drawings
under a Letter of Credit issued for such  Borrower's  account (a  "Reimbursement
Obligation")  shall be  governed  by the  Application  related to such Letter of
Credit,  except that  reimbursement of each drawing shall be made in immediately
available  funds at the designated  office of such Issuer by no later than 12:00
Noon  (local  time at the  issuing  office of the  Issuer) on the date when such
drawing is paid. If the relevant  Borrower does not make any such  reimbursement
payment on the date due and the Participating  Lenders fund their participations
therein  in the  manner set forth in Section  1.3(d)  below,  then all  payments
thereafter received by the Applicable Issuer in discharge of any of the relevant
Reimbursement Obligations shall be distributed in accordance with Section 1.3(d)
below.

      (d) The Participating  Interests.  Each Lender, by its acceptance  hereof,
severally  agrees to purchase from the  Applicable  Issuer,  and the  Applicable
Issuer hereby agrees to sell to each such Lender (a "Participating  Lender"), an
undivided percentage participating interest (a "Participating Interest"), to the
extent  of its  Percentage,  in each  Letter  of  Credit  issued  by,  and  each
Reimbursement  Obligation owed to, the Applicable Issuer.  Upon any failure by a
Borrower to pay any  Reimbursement  Obligation  in respect of a Letter of Credit
issued for such Borrower's  account at the time required on the date the related
drawing is paid,  as set forth in Section  1.3(c)  above,  or if the  Applicable
Issuer  is  required  at any  time to  return  to a  Borrower  or to a  trustee,
receiver,  liquidator,  custodian  or other Person any portion of any payment of
any Reimbursement  Obligation,  each Participating  Lender shall, not later than
the Business Day it receives a certificate  from the  Applicable  Issuer to such
effect,  if such  certificate  is received  before 1:00 p.m.  (local time at the
office of the Issuer),  or not later than the  following  Business  Day, if such
certificate is received after such time, pay to the Applicable  Issuer an amount
equal to its  Percentage of such unpaid or recaptured  Reimbursement  Obligation
together with interest on such amount accrued from the date the related  payment
was  made  by the  Applicable  Issuer  to the  date  of  such  payment  by  such
Participating  Lender at a rate per annum equal to (i) from the date the related
payment  was made by the  Applicable  Issuer to the date two (2)  Business  Days
after payment by such Participating  Lender is due hereunder,  the Federal Funds
Rate for each such day and (ii) from the date two (2)  Business  Days  after the
date such payment is due from such Participating Lender to the date such payment
is made by such  Participating  Lender,  the Applicable Index Rate in effect for
each such day. Each such  Participating  Lender shall  thereafter be entitled to
receive its  Percentage  of each  payment  received  in respect of the  relevant
Reimbursement  Obligation  and of interest  paid  thereon,  with the  Applicable
Issuer retaining its Percentage as a Lender hereunder.

      The several obligations of the Participating  Lenders to the Issuers under
this Section 1.3 shall be absolute,  irrevocable and unconditional under any and
all circumstances  whatsoever  (except,  to the extent such Borrower is relieved
from its  obligation  to reimburse the  Applicable  Issuer for a drawing under a
Letter of Credit because of the Applicable  Issuer's gross negligence or willful
misconduct in  determining  that  documents  received under the Letter of Credit
comply  with the  terms  thereof)  and  shall  not be  subject  to any  set-off,
counterclaim  or defense to payment which any  Participating  Lender may have or
have had against any one or more of the Borrowers,  the Agent,  any other Lender
or  any  other  Person  whatsoever.  Without  limiting  the  generality  of  the
foregoing,  such  obligations  shall not be  affected by any Default or Event of
Default or by any reduction or termination of any Commitment of any Lender,  and
each  payment by a  Participating  Lender  under this  Section 1.3 shall be made
without any offset,  abatement,  withholding or reduction whatsoever.  The Agent
shall be entitled to offset  amounts  received for the account of a Lender under
this Agreement against unpaid amounts due from such Lender hereunder (whether as
fundings of participations, indemnities or otherwise).

      (e)  Indemnification.  Each of the  Participating  Lenders  shall,  to the
extent of their respective Percentages, indemnify the Issuers (to the extent not
reimbursed by the Borrowers)  against any cost,  expense  (including  reasonable
counsel  fees and  disbursements),  claim,  demand,  action,  loss or  liability
(except such as result from the applicable  Issuer's gross negligence or willful
misconduct)  that the Issuers may suffer or incur in connection  with any Letter
of Credit.  The  obligations  of the  Participating  Lenders  under this Section
1.3(e) and all other parts of this Section 1.3 shall survive termination of this
Agreement and of all other L/C Documents.

      Section 1.4.      The Sublimit.  $5,000,000 of the Commitments  shall be
available  exclusively  to DYN but the Company may at its discretion by notice
to the  Agent  increase  such  Sublimit  (but not  beyond  the  amount  of the
Activated Commitments).

      Section 1.5.  Manner of Borrowing  Revolving  Loans.  (a)  Generally.  The
Company  (which is acting on behalf of the  Borrowers  pursuant  to Section  1.6
hereof) shall give the Agent notice (which may be written or oral,  but if oral,
promptly confirmed in writing) by 10:00 a.m. on any Business Day of each request
for a Borrowing  of Revolving  Loans,  in each case  specifying  the Borrower to
which the proceeds of such  Borrowing  are to be  disbursed,  the amount of each
such Borrowing, the currency of such Borrowing (which must be U.S. Dollars or an
Alternative  Currency) and the date such Borrowing is to be made, which shall be
not less  than  two  Business  Day's  hence  in the  case of a  Borrowing  in an
Alternative  Currency other than Canadian  dollars and one day hence in the case
of a Borrowing in Canadian dollars, but which may be the same day in the case of
a Borrowing in U.S. Dollars.  The Agent shall promptly notify each Lender of its
receipt of each such notice.  Not later than 1:00 p.m. on the date specified for
any  Borrowing,  each  Lender  shall make the  proceeds  of its  Revolving  Loan
comprising  part of such Borrowing  available in immediately  available funds to
the Agent in Chicago  except in the case of Revolving  Loans  denominated  in an
Alternative Currency,  which shall be made available at such office as the Agent
has previously specified in a notice to each Lender in such funds which are then
customary for the settlement of international  transactions in such currency and
no later than such local time as is necessary  for such funds to be received and
transferred  to the  relevant  Borrower  for same  day  value on the date of the
relevant  Borrowing.  Subject  to all of the terms and  conditions  hereof,  the
proceeds of each Lender's  Revolving Loan  denominated in U.S.  Dollars shall be
made  available to the relevant  Borrower on the date requested at the office of
the  Agent  in  Chicago  and the  proceeds  of  each  Lender's  Revolving  Loans
denominated  in an  Alternative  Currency  at  such  office  as  the  Agent  has
previously  agreed to with the  relevant  Borrower,  in each case in the type of
funds received by the Agent from the Lenders.  The Lenders'  obligations to make
Revolving  Loans in an  Alternative  Currency  or to provide or  participate  in
Letters of Credit payable in an Alternative  Currency shall always be subject to
such Alternative Currency being freely available to each of them in the relevant
market. Borrowing notices shall be irrevocable.

      (b) Agent  Reliance  on Bank  Funding.  Unless  the Agent  shall have been
notified  by a Lender  before  the time when such  Lender is  scheduled  to make
payment to the Agent of the  proceeds of a Revolving  Loan that such Lender does
not intend to make such payment,  the Agent may assume that such Lender has made
such payment when due and the Agent may in reliance  upon such  assumption  (but
shall not be required to) make  available to the relevant  Borrower the proceeds
of the  Revolving  Loan to be made by such  Lender and, if any Lender has not in
fact made such payment to the Agent,  such Lender shall,  on demand,  pay to the
Agent the amount made  available to such  Borrower  attributable  to such Lender
together  with  interest  thereon  in  respect  of each day  during  the  period
commencing  on the date such  amount was made  available  to such  Borrower  and
ending on (but  excluding) the date such Lender pays such amount to the Agent at
a rate per annum equal to the Federal  Funds Rate or, in the case of a Revolving
Loan  denominated in an Alternative  Currency,  the cost to the Agent of funding
the amount it advanced to fund such  Lender's  Revolving  Loan, as determined by
the  Agent.  If such  amount  is not  received  from  such  Lender  by the Agent
immediately upon demand, the applicable  Borrower will, on demand,  repay to the
Agent the  proceeds  of the  Revolving  Loan  attributable  to such  Lender with
interest  thereon at a rate per annum equal to the interest  rate  applicable to
the relevant Revolving Loan.

      Section 1.6.      Appointment   of  Company  as  Agent  for   Borrowers;
Reliance by Agent

      (a)  Appointment.  Each Borrower  irrevocably  appoints the Company as its
agent  hereunder to make  requests on such  Borrower's  behalf  under  Section 1
hereof for  Borrowings  to be made by such Borrower and for Letters of Credit to
be issued for such Borrower's account and to take any other action  contemplated
by the  Loan  Documents  with  respect  to  credit  extended  hereunder  to such
Borrower.  The Agent and the Lenders shall be entitled to  conclusively  presume
that any action by the Company  under the Loan  Documents  is taken on behalf of
any one or more of the Borrowers whether or not the Company so indicates.

      (b) Reliance.  All requests for Borrowings and selection of interest rates
to be  applicable  thereto may be written or oral,  including  by  telephone  or
telecopy.  The Borrowers  agree that the Agent may rely on any such notice given
by any person the Agent in good faith  believes is an Authorized  Representative
without  the  necessity  of  independent  investigation  (the  Borrowers  hereby
indemnifying  the Agent and Lenders from any liability or loss ensuing from such
reliance),  and in the event any such telephonic or other oral notice  conflicts
with any written  confirmation,  such oral or telephonic  notice shall govern if
the Agent has acted in reliance thereon.

SECTION 2.  INTEREST.

      Section 2.1.  Rate.  Each  Revolving  Loan shall bear interest  (which the
relevant  Borrower promises to pay at the times herein provided) at the rate per
annum determined by adding the Applicable Margin to the Applicable Index Rate as
in effect from time to time,  provided that if a Revolving Loan is not paid when
due (whether by lapse of time,  acceleration or otherwise),  such Revolving Loan
shall bear interest  (which the relevant  Borrower  promises to pay at the times
hereinafter  provided),  whether before or after judgment,  and until payment in
full  thereof,  at the rate per annum  determined by adding 2% to the sum of the
Applicable  Margin and the Applicable Index Rate as in effect from time to time.
Interest  on the  Revolving  Loans  shall  be  payable  on the  last day of each
calendar month  (beginning on the first of such dates after the date hereof) and
at maturity of the Revolving  Credit Notes and interest  after maturity shall be
due and payable upon demand.

      Section 2.2. Computation of Interest. All interest on the Revolving Credit
Notes (and unless otherwise stated herein, all fees, charges and commissions due
hereunder),  shall be computed on the basis of a year of 360 days for the actual
number of days elapsed.

      Section 2.3.  Capital  Adequacy.  If any Lender shall  determine  that any
applicable law, rule or regulation  regarding capital adequacy  instituted after
the date hereof,  or any change in the  interpretation  or administration of any
applicable  law,  rule  or  regulation   regarding   capital   adequacy  by  any
governmental  authority,  central  bank or  comparable  agency  charged with the
interpretation  or  administration  thereof or compliance by such Lender (or its
lending  office)  with any  request  or  directive  regarding  capital  adequacy
(whether or not having the force of law) of any such authority,  central bank or
comparable  agency,  has or would have the effect of reducing the rate of return
on such Lender's  capital as a consequence of its  obligations  hereunder or the
Letters of Credit or credit extended by it hereunder to a level below that which
such Lender could have achieved but for such law,  rule,  regulation,  change or
compliance  (taking into  consideration  such Lender's  policies with respect to
capital  adequacy) by an amount reasonably deemed by such Lender to be material,
then from time to time as specified by such Lender the relevant  Borrower  shall
pay on demand such  additional  amount or amounts as will compensate such Lender
for such reduction. A certificate of any Lender claiming compensation under this
Section 2.3 and setting forth the additional  amount or amounts to be paid to it
hereunder  in  reasonable  detail  shall be prima  facie  evidence  thereof.  In
determining  such  amount,  such  Lender may use any  reasonable  averaging  and
attribution  methods.  

SECTION 3. FEES, PAYMENTS,  REDUCTIONS,  APPLICATIONS AND
           NOTATIONS.

      Section  3.1.  Commitment  Fee. For the period from the date hereof to and
including the  Termination  Date,  the Borrowers  shall pay to the Agent for the
account of the  Lenders a  commitment  fee at the rate of 1/2 of 1% per annum on
the average daily unused amount of the Activated Commitments hereunder. Such fee
is payable in arrears on the last day of each calendar quarter  (commencing with
the first of such dates after the date hereof) and on the Termination Date.

      Section 3.2.      Other Fees.  The  Company  shall pay to the Agent such
other and  additional  fees as may from time to time be agreed to between  the
Company and the Agent.

      Section 3.3. Letter of Credit Fees. On the date of issuance of each Letter
of Credit and on each anniversary date thereof the applicable Borrower shall pay
to the Agent,  for the ratable account of the Lenders,  a fee on the face amount
of the  Letter of Credit  for the  period  thereafter  during  which the same is
scheduled to be outstanding or for one year,  whichever is the lesser,  computed
at the rate of 3% per annum for such period (in the case of Financial Letters of
Credit) and 1.5% per annum for such period (in the case of  Performance  Letters
of Credit).  In  addition,  on the date of issuance of each Letter of Credit the
applicable Borrower shall pay the Applicable Issuer for its own account a fee of
1/4 of 1% of the face amount of such  Letter of Credit,  such fee to be retained
by the  Applicable  Issuer for its own  account.  In  addition,  the  applicable
Borrower shall pay to the Applicable Issuer such issuing,  processing,  drawing,
amendment  and other  fees and  charges  as the  Applicable  Issuer  customarily
imposes  in  connection  with the  issuance  of letters of credit of the type in
question, the payment of drafts thereunder or amendments thereto.

      Section 3.4. Voluntary Prepayments. The Borrowers shall have the privilege
of prepaying without premium or penalty and in whole or in part (but if in part,
then in an amount not less than $1,000,000 and thereafter in integral  multiples
of $100,000) the Revolving Credit Notes at any time upon notice from the Company
(which need not be joined in by any  Borrower)  to the Agent prior to 11:00 a.m.
on the date fixed for prepayment, each such prepayment to be made by the payment
of the  principal  amount to be prepaid  and,  if such  prepayment  prepays  the
Borrowings from a particular  Borrower in full,  accrued interest thereon to the
date of prepayment.  Any amounts so prepaid may, subject to all of the terms and
conditions hereof, be borrowed, repaid and borrowed again.

      Section 3.5. Mandatory Prepayment.  In the event that the aggregate amount
of the  Revolving  Loans and the L/C  Obligations  shall at any time and for any
reason exceed the Borrowing Base or the Activated  Commitments or any applicable
Sublimit,  each as then determined and computed, the Borrowers shall immediately
and  without  notice or demand  pay the amount of the excess to the Agent as and
for a mandatory  prepayment on the  Revolving  Credit Notes or, if the Revolving
Loans have been paid in full but L/C  Obligations are  outstanding,  then and in
any such  event,  such  excess  shall be paid  over to the  Agent to be  applied
against,  or  held  as  collateral   security  for,  as  applicable,   such  L/C
Obligations.

      Section  3.6.  Voluntary  Terminations.   The  Borrowers  shall  have  the
privilege  upon two Business Days' prior notice from the Company (which need not
be joined in by any  Borrower)  to the Agent (which  shall  promptly  notify the
Lenders) to ratably  terminate  the  Commitments  in whole or in part (but if in
part  then in the  amount  of  $1,000,000  or such  greater  amount  which is an
integral multiple of $100,000);  provided that the Activated Commitments may not
be reduced  to an amount  less then the sum of all  Revolving  Loans and all L/C
Obligations  then  outstanding  unless there is deposited with the Agent as cash
collateral for such Revolving  Loans and L/C  Obligations  cash in the amount by
which the same  exceed  the amount of the  Activated  Commitments.  All  partial
terminations of the Commitments  hereunder  shall  automatically  reduce the L/C
Commitment  in each case as from time to time in effect  hereunder,  by the same
percentage as the percentage  termination in the Commitments.  No termination of
the Commitments may be reinstated.

      Section 3.7. Place and  Application.  All payments of principal,  interest
and fees  shall be made to the Agent at its  office at 111 West  Monroe  Street,
Chicago,  Illinois  (or at  such  other  place  as the  Agent  may  specify)  in
immediately  available and freely  transferable funds at the place of payment by
no later than 12:00 Noon on the due date  thereof  or, if such  payment is to be
made in an Alternative  Currency,  by no later than 12:00 Noon local time at the
place of payment to such office as the Agent has previously specified;  provided
however that reimbursements of drawings under Letters of Credit shall be made to
the Applicable  Issuer.  Any payments  received by the Agent or such  Applicable
Issuer after such time shall be deemed received as of the opening of business on
the next Business Day. All such payments shall be made (i) in U.S.  Dollars,  in
immediately  available  funds at the  place of  payment,  or (ii) in the case of
Revolving  Loans or  reimbursement  of  drawings  under a Letter of Credit in an
Alternative  Currency, in such Alternative Currency in such funds then customary
for settlement of international transactions in such currency. All such payments
shall be made without  set-off or  counterclaim  and without  reduction for, and
free from, any and all present or future taxes, levies,  imposts,  duties, fees,
charges,  deductions,  withholdings,  restrictions  or  conditions of any nature
imposed by any government or political  subdivision or taxing authority thereof.
Except as herein  provided,  all  payments  shall be  received  for the  ratable
account of the  Lenders and shall be  promptly  distributed  by the Agent to the
Lenders  in  accordance  with  their  Percentages.  Any  amount  prepaid  on the
Revolving Credit Notes may,  subject to all of the terms and conditions  hereof,
be borrowed, repaid and borrowed again.

      Anything  contained herein to the contrary  notwithstanding,  all payments
and  collections  received in respect of the Obligations and all proceeds of the
Collateral received,  in each instance, by the Agent or any of the Lenders after
the  occurrence  of an Event  of  Default  shall,  subject  to the  terms of the
Intercreditor Agreement, be remitted to the Agent and distributed as follows:

      (a) first, to the payment of any outstanding  costs and expenses  incurred
by the Agent in monitoring,  verifying, protecting,  preserving or enforcing the
Liens on the Collateral or by the Agent in  protecting,  preserving or enforcing
rights  under the Loan  Documents,  and in any event all costs and expenses of a
character which the Borrowers have agreed to pay under Section 11.5 hereof (such
funds to be  retained  by the Agent  for its own  account  unless  the Agent has
previously been reimbursed for such costs and expenses by the Lenders,  in which
event such  amounts  shall be  remitted  to the  Lenders to  reimburse  them for
payments theretofore made to the Agent);

      (b) second,  to the payment of any  outstanding  interest or other fees or
amounts due under the Revolving  Credit Notes and the other Loan  Documents,  in
each case other than for principal or in reimbursement or  collateralization  of
L/C  Obligations,  ratably as among the Agent and the Lenders in accord with the
amount of such interest and other fees or amounts owing each;

      (c) third,  to the payment of the principal of the Revolving  Credit Notes
and  any  unpaid  Reimbursement  Obligations  and to the  Agent  to be  held  as
collateral security for any other L/C Obligations (until the Agent is holding an
amount  of  cash  equal  to  the  then  outstanding   amount  of  all  such  L/C
Obligations),  the aggregate  amount paid to or held as collateral  security for
the Lenders to be allocated pro rata as among the Lenders in accordance with the
then respective aggregate unpaid principal balances of their Revolving Loans and
their interests in the Letters of Credit;

      (d) fourth,  to the Agent and the Lenders  ratably in accordance  with the
amounts of any other  indebtedness,  obligations or liabilities of the Borrowers
owing to each of them and secured by the Collateral  Documents  unless and until
all such  indebtedness,  obligations  and  liabilities  have been fully paid and
satisfied; and

      (e) fifth, to the Company on behalf of the Borrowers (each Borrower hereby
agreeing that its recourse for its share of such payment shall be to the Company
and not the  Agent or any  Lender)  or  whoever  else may be  lawfully  entitled
thereto.

      Section 3.8.  Notations  and  Requests.  All  Borrowings  made against the
Revolving Credit Notes,  the Borrower which made such  Borrowings,  the rates of
interest  applicable  thereto and the  currency in which each such  Borrowing is
denominated, shall be recorded by the Lenders on their books or, at their option
in any instance,  endorsed on the reverse side of the Revolving Credit Notes and
the unpaid  principal  balances and status,  rates and currencies so recorded or
endorsed  by the  Lenders  shall be prima  facie  evidence in any court or other
proceeding brought to enforce the Revolving Credit Notes of the principal amount
remaining  unpaid  thereon,  the Borrower  which made the  Borrowings  evidenced
thereby,  the  currencies in which such  Borrowings are payable and the interest
rates applicable thereto. Prior to any negotiation of any Revolving Credit Note,
the Lender  holding  such  Revolving  Credit  Note  shall  endorse  thereon  the
outstanding amount of Borrowings  evidenced thereby, the currencies in which the
same are payable and the rates of interest applicable thereto.

SECTION 4.  THE COLLATERAL AND THE GUARANTEES

      Section 4.1. The Collateral. The Obligations shall be secured by valid and
perfected first Liens on all inventory, accounts receivable, equipment and other
goods of the  Borrowers  and the  Guarantors,  together  with  all  instruments,
securities,  chattel paper and  intangibles  of the Borrowers and the Guarantors
and all proceeds of the  foregoing,  provided  however that unless and until the
Required Lenders  otherwise elect (i) the Borrowers and the Guarantors shall not
be required to note the Agent's  Lien on any  certificate  of title issued for a
vehicle  or to  perfect  a  Lien  on  fixtures  or  on  inventory  or  equipment
temporarily  located at job sites  outside of the  jurisdiction  where its chief
executive  office is located and (ii) no  Guarantor,  the fair  market  value of
whose assets  aggregates  less than $250,000 shall be required to grant Liens on
its  assets to the  Agent,  further  provided  that (i) Liens on those  accounts
receivable  of DYN, B & B  Contracting & Supply  Company,  Dynalectric  Company,
Dynalectric  Company of Nevada,  Contra Costa Electric Inc. and KDC Inc. arising
under  contracts for which Reliance  Surety  Company and/or its Affiliates  have
provided payment and/or performance bonds and inventory, materials and equipment
purchased for, installed in or allocated to any such contracts may be subject to
prior Liens in favor of Reliance  Surety Company and/or its Affiliates to secure
obligations in connection with payment and performance  bonds issued by Reliance
Surety  Company  or its  Affiliates,  (ii) no Lien need be  granted on any asset
subject to a lien permitted by Section  7.11(e) (i), (j), (k), (l), (as to Liens
on fixed  assets  only),  (m) or (n)  (insofar as (n) relates to the  extension,
renewal or replacement  of a Lien  permitted by the  subsections of Section 7.11
identified  in this clause  (ii)),  (iii) no Lien need be granted on the capital
stock  of an  Unrestricted  Subsidiary  or on the  capital  stock or  assets  of
Designated Foreign Restricted Subsidiaries,  (iv) no Lien need be granted on the
capital stock of MES Holdings Corporation, a Delaware corporation if and so long
as the grant of such a Lien is  prohibited  by any debt  agreement  to which the
Company  is a party,  (v) Liens  need not be  granted  on the stock or assets of
EMCOR  U.K.  Limited  and  its  Restricted  Subsidiaries  until  the  Tranche  B
Activation  Date and Liens  need not be  granted  on the  stock of the  Canadian
Subsidiaries,  and the  Canadian  Subsidiaries  need  not  grant a Lien on their
assets,  until the Tranche C Activation  Date,  (vi) no Liens need be granted on
real  property  unless and until the  Required  Lenders so require  (vii)  Liens
granted may be subject to Liens permitted by clauses (a), (b) and (h) of Section
7.11 hereof,  (viii) Liens need not be  perfected on notes  receivable  having a
fair  value of less  than  $1,000,000  in any  instance  and  $5,000,000  in the
aggregate  or on bonds or notes of the City of New York  pledged  to the City of
New York in lieu of  retainage  and (ix) Liens need not be  perfected  on equity
securities (other than capital stock of Restricted  Subsidiaries  required to be
pledged by the other  provisions  of this  Section  4.1.) having a fair value of
less than  $1,000,000  in any  instance and  $5,000,000  in the  aggregate.  The
Borrowers  agree that they will,  and will cause the Guarantors to, from time to
time at the  request of the Agent or the  Required  Lenders  execute and deliver
such documents and do such acts and things as the Agent or the Required  Lenders
may  reasonably  request  in order to provide  for or perfect  such Liens on the
Collateral.

      Section 4.2. The Guarantees.  The Obligations shall be fully guaranteed by
the  Guarantors,  provided  that  (i)  until  the  Tranche  B  Activation  Date,
Guarantees need not be provided by those Guarantors listed under the heading "to
be  provided  by Tranche B  Activation  Date" on  Schedule  4.2,  (ii) until the
Tranche C Activation Date  Guarantees  need not be provided by those  Guarantors
listed  under the  heading  "to be  provided  by Tranche C  Activation  Date" on
Schedule 4.2, and (iii) unless and until the  Consolidation  Date,  the right to
enforce the Guarantees of DYN and its Restricted Subsidiaries of the obligations
of the Company  and its other  Restricted  Subsidiaries  shall be subject to the
terms of the Intercreditor  Agreement.  Subject to the forgoing  limitations the
Required Lenders may from time to time require any Restricted  Subsidiary (other
than a captive insurance company which is a Restricted  Subsidiary) to provide a
Guarantee  and Liens on its assets in which  event the Company  shall  within 30
days of request  cause such  Restricted  Subsidiary  to  execute  and  deliver a
Guarantee to the Agent together with such supporting  resolutions,  opinions and
other showings as the Agent may reasonably require.

SECTION 5.  REPRESENTATIONS AND WARRANTIES

      Each  Borrower  represents  and  warrants  to the Agent and the Lenders as
follows:

      Section  5.1.  Organization  and  Qualification.  Each  Borrower  is  duly
organized, validly existing and in good standing as a corporation under the laws
of the  jurisdiction in which it is  incorporated or organized,  as the case may
be, has full and  adequate  corporate  power to own its Property and conduct its
business  as now  conducted,  and is  duly  licensed  or  qualified  and in good
standing in each jurisdiction in which the failure to be so qualified would have
a Material Adverse Effect.

      Section 5.2.  Subsidiaries.  Each Restricted Subsidiary is duly organized,
validly  existing and in good standing (or their  equivalents  under  applicable
local law) under the laws of the  jurisdiction  in which it is  incorporated  or
organized,  as the case may be, has full and adequate  power to own its Property
and conduct its business as now conducted, and is duly licensed or qualified and
in good  standing in each  jurisdiction  in which the failure to be so qualified
would have a Material Adverse Effect. As of the date hereof, Schedule 5.2 hereto
identifies  each   Subsidiary,   the   jurisdiction  of  its   incorporation  or
organization,  as the case may be,  the  percentage  of issued  and  outstanding
shares of each class of its capital stock or other equity interests owned by the
Company and the  Subsidiaries  and, if such  percentage  is not 100%  (excluding
directors' qualifying shares as required by law), a description of each class of
its authorized capital stock and other equity interests and the number of shares
of each class  issued and  outstanding  and the Company will notify the Agent of
any  material  changes in such  information.  All of the  outstanding  shares of
capital stock and other equity  interests of each  Subsidiary are validly issued
and outstanding and fully paid and  nonassessable  (except for the provisions of
Section 630 of the Business  Corporation Law of the State of New York, as to New
York  Corporations) and all such shares and other equity interests  indicated on
Schedule 5.2 as owned by the Company or a  Subsidiary  are as of the date hereof
owned,  beneficially  and of record,  by the Company or such Subsidiary free and
clear of all Liens not permitted hereby. There are no outstanding commitments or
other  obligations  of any  Restricted  Subsidiary  to  issue,  and no  options,
warrants or other  rights of any Person to  acquire,  any shares of any class of
capital stock or other equity interests of any Restricted Subsidiary.

      Section  5.3.  Corporate  Authority  and  Validity  of  Obligations.  Each
Borrower has full right and authority to enter into this Agreement and the other
Loan Documents to which it is a party,  to make the borrowings  herein  provided
for, to issue the Revolving  Credit Notes in evidence  thereof,  to grant to the
Agent the Liens provided for in the Collateral  Documents  being executed by it,
and to  perform  all of its  obligations  hereunder  and under  the  other  Loan
Documents to which it is a party. Each Guarantor has full right and authority to
enter into the Loan Documents to which it is a party,  to grant to the Agent the
Liens provided for in the Collateral Documents executed by it and to perform all
of its obligations under such Loan Documents.  The Loan Documents have been duly
authorized,   executed  and  delivered  by  the  Borrowers  and  Guarantors  and
constitute  valid  and  binding  obligations  of the  Borrowers  and  Guarantors
enforceable  in  accordance  with their terms  except as  enforceability  may be
limited by bankruptcy,  insolvency or similar laws affecting  creditors'  rights
generally  and  general   principles  of  equity   (regardless  of  whether  the
application  of such  principles  is  considered in a proceeding in equity or at
law);  and this  Agreement  and the other Loan  Documents  do not,  nor does the
performance or observance by any Borrower or Guarantor of any of the matters and
things herein or therein provided for,  contravene or constitute a default under
any provision of law or any judgment,  injunction,  order or decree binding upon
any  Borrower  or  Guarantor  or any  provision  of  the  charter,  articles  of
incorporation  or  organization  or by-laws of any  Borrower or Guarantor or any
covenant, indenture or agreement of the Borrowers or Guarantors or affecting any
of their Properties,  or result in the creation or imposition of any Lien on any
Property of the Borrowers or Guarantors.

      Section 5.4. Use of Proceeds;  Margin Stock.  The Borrowers  shall use the
proceeds of the Revolving  Loans and other  extensions of credit made  available
hereunder solely for their general corporate purposes (including ordinary course
of business  refunding of indebtedness)  provided that the Company shall not use
the  proceeds  of any Loan to fund a loan or  advance  to DYN or its  Restricted
Subsidiaries.  Neither  the  Borrowers  nor any  Subsidiary  is  engaged  in the
business of extending  credit for the purpose of purchasing  or carrying  margin
stock  (within  the meaning of  Regulation  U of the Board of  Governors  of the
Federal  Reserve  System),  and no part of the proceeds of any Revolving Loan or
any other  extension of credit made  hereunder will be used to purchase or carry
any such  margin  stock  or to  extend  credit  to  others  for the  purpose  of
purchasing or carrying any such margin stock.

      Section 5.5.  Financial  Reports.  The  consolidated  balance sheet of the
Company  and  its   Subsidiaries  as  at  December  31,  1995  and  the  related
consolidated  statements of operations,  cash flows and shareholder's  equity of
the  Company  and  its   Subsidiaries  for  the  fiscal  year  then  ended,  and
accompanying  notes  thereto,   which  consolidated   financial  statements  are
accompanied  by the audit  report of Arthur  Andersen  LLP,  independent  public
accountants,  and the unaudited interim condensed  consolidated balance sheet of
the Company and its  Subsidiaries  as at March 31, 1996 and the related  interim
condensed  consolidated  statements of operations,  cash flows and shareholder's
equity of the Company and its  Subsidiaries  for the three (3) months then ended
and the unaudited interim condensed  consolidating  balance sheet of the Company
and its  Subsidiaries  as of March 31,  1996 and the related  interim  condensed
consolidating  statement  of  operations  for the three (3)  months  then  ended
heretofore furnished to the Lenders,  fairly present the consolidated  financial
condition of the Company and its  Subsidiaries  as at said dates and the results
of their operations and cash flows for the periods then ended in conformity with
generally  accepted  accounting  principles  applied on a consistent  basis, but
subject, in the case of such interim condensed financial statements, to year end
audit adjustments which are not expected to be material. Neither the Company nor
any  Restricted  Subsidiary  has,  to  the  best  of its  knowledge,  contingent
liabilities which could reasonably be expected to have a Material Adverse Effect
other  than  as  indicated  on  such   financial   statements  or,  as  to  each
reaffirmation of this sentence's  representation  and warranty in the future, on
the most recent  financial  statements  or the related  notes  thereto which are
provided to the Lenders furnished pursuant to Section 7.5 hereof.

      Section 5.6. No Material  Adverse Change.  Since March 31, 1996, there has
been no change in the condition  (financial or otherwise) or business  prospects
of the  Company  and its  Restricted  Subsidiaries  which  could  reasonably  be
expected to have a Material Adverse Effect.

      Section 5.7. Full Disclosure.  The statements and information furnished to
the  Agent and the  Lenders  through  the date  hereof  in  connection  with the
negotiation of this  Agreement and the other Loan Documents and the  commitments
by the Lenders to provide all or part of the  financing  contemplated  hereby do
not, taken as a whole,  contain any untrue statements of a material fact or omit
a material fact necessary to make the material  statements  contained  herein or
therein not  misleading,  the Lenders  acknowledging  that as to any projections
furnished to Lenders,  the Borrowers  only represent that the same were prepared
on  the  basis  of  information  and  estimates  the  Borrowers  believed  to be
reasonable.

      Section  5.8.  Good Title.  Except to the extent  heretofore  disclosed in
writing to the Lenders,  the Company and the Restricted  Subsidiaries  have good
and marketable title to their real property and good and  merchantable  title to
the balance of their assets as reflected  on the most recent  balance  sheets of
the Company and its Restricted Subsidiaries furnished to the Lenders (except for
sales of  assets  by the  Borrowers  and their  Restricted  Subsidiaries  in the
ordinary course of business), subject to no Liens other than such thereof as are
permitted by Section 7.11 hereof.

      Section 5.9. Litigation and Other Controversies. There is no litigation or
governmental  proceeding or labor controversy  pending,  nor to the knowledge of
any Borrower threatened, against the Borrower or any Restricted Subsidiary which
if adversely  determined would (a) impair the validity or enforceability  of, or
impair the ability of any  Borrower  or  Guarantor  to perform  its  obligations
under,  this Agreement or any other Loan Document or (b) have a Material Adverse
Effect.

      Section 5.10.  Taxes.  All tax returns which, to the best knowledge of the
Company, are required to be filed by the Company or any Restricted Subsidiary in
any jurisdiction have, in fact, been filed, and all taxes, assessments, fees and
other governmental charges upon the Company or any Restricted Subsidiary or upon
any of their respective Properties,  income or franchises, which are shown to be
due and payable in such returns, have been paid to the extent due. The Borrowers
do not know of any material proposed  additional tax assessment  against them or
the Restricted Subsidiaries for which adequate provision in accordance with GAAP
has not been made in their respective financial statements.  Adequate provisions
in  accordance  with  GAAP for  taxes on the books of the  Company,  each  other
Borrower and each Restricted  Subsidiary have been made for all open years,  and
for its current fiscal period.

      Section 5.11. Approvals. No authorization,  consent, license, or exemption
from, or filing or  registration  with,  any court or  governmental  department,
agency or  instrumentality,  nor any approval or consent of the  stockholders of
the  Borrowers  or any  other  Person,  is or will  be  necessary  to the  valid
execution,  delivery or  performance  by the  Borrowers  or  Guarantors  of this
Agreement or any other Loan  Document  other than consents  required  under debt
agreements  which  will be paid in full  and  discharged  concurrently  with the
initial Credit  Utilization  hereunder and consents which have been obtained and
are in full force and effect.

      Section  5.12.  Affiliate  Transactions.  No Borrower  nor any  Restricted
Subsidiary  is a party to any contract or agreement  with any of its  Affiliates
(other  than  contracts  and  agreements  between  and among the  Borrowers  and
Restricted  Subsidiaries)  on terms and  conditions  which are less favorable to
such Borrower or such Restricted Subsidiary than would be usual and customary in
similar contracts or agreements between Persons not affiliated with each other.

      Section 5.13.  Investment  Company;  Public Utility  Holding  Company.  No
Borrower nor any Subsidiary is an "investment company" or a company "controlled"
by an "investment  company" within the meaning of the Investment  Company Act of
1940, as amended,  or a "public utility  holding  company" within the meaning of
the Public Utility Holding Company Act of 1935, as amended.

      Section 5.14. ERISA. Each Borrower and each other member of its Controlled
Group has fulfilled its obligations  under the minimum funding  standards of and
is in compliance in all material  respects with ERISA and the Code to the extent
applicable to it and has not incurred any liability to the PBGC or a Plan (other
than liabilities  arising in the future under a multiemployer plan as defined in
Section  4001(c)(3)  of ERISA which could not  reasonably  be expected to have a
Material  Adverse  Effect) under Title IV of ERISA other than a liability to the
PBGC for premiums under Section 4007 of ERISA. As of the date hereof no Borrower
nor  any  Subsidiary  has  any  contingent   liabilities  with  respect  to  any
post-retirement  benefits  under  a  Welfare  Plan,  other  than  liability  for
continuation  coverage  described  in  article  6 of  Title  I of  ERISA  and an
approximately $800,000 liability in connection with Jamaica Water Supply Company
("JWSC") for which JWSC has set aside funds.

      Section 5.15.  Compliance  with Laws.  Each  Borrower and each  Restricted
Subsidiary is in compliance with the  requirements of all federal,  governmental
(whether national, supra-national or otherwise), state and local laws, rules and
regulations  applicable  to  or  pertaining  to  their  Properties  or  business
operations  (including,  without limitation,  the Occupational Safety and Health
Act of  1970,  the  Americans  with  Disabilities  Act of  1990,  and  laws  and
regulations establishing quality criteria and standards for air, water, land and
toxic or hazardous wastes and substances),  except for such  non-compliance with
the same which could not  reasonably  be expected to have any  Material  Adverse
Effect.  No Borrower nor any Restricted  Subsidiary  has received  notice to the
effect that its operations are not in compliance with any of the requirements of
applicable   federal,   governmental   (whether   national,   supra-national  or
otherwise),  state  or local  environmental,  health  and  safety  statutes  and
regulations  or are the  subject of any  governmental  investigation  evaluating
whether  any  remedial  action is needed to respond to a release of any toxic or
hazardous  waste or substance  into the  environment,  which  non-compliance  or
remedial action could reasonably be expected to have a Material Adverse Effect.

      Section 5.16. Other Agreements.  No Borrower nor any Restricted Subsidiary
is in default  under the terms of any  covenant,  indenture  or  agreement of or
affecting the Borrowers,  any Restricted  Subsidiary or any of their Properties,
which default if uncured could reasonably be expected to have a Material Adverse
Effect.  The Company has  delivered a true copy of the Series C Indenture to the
Lenders.  The only conditions or requirements  beyond the control of the Company
to the occurrence of the Consolidation  Date are amendments to the Intercreditor
Agreement.

      Section 5.17.     No  Default.  No  Default  or  Event  of  Default  has
occurred and is continuing.

SECTION 6.  CONDITIONS PRECEDENT

      Section  6.1. All Credit  Utilization.  The  obligation  of the Lenders to
provide  any  Borrower  with any Credit  Utilization  (including  the first such
Credit Utilization) shall be subject to the conditions  precedent that as of the
time of each such Credit Utilization:

      (a) each of the representations and warranties set forth herein and in the
other  Loan  Documents  shall be and  remain  true and  correct as of said time,
except to the extent the same expressly relate to an earlier date;

      (b) the Borrowers and  Guarantors  shall be in compliance  with all of the
terms and conditions  hereof and of the other Loan Documents,  and no Default or
Event of Default  shall have  occurred  and be  continuing  or would  occur as a
result of such Credit Utilization;

      (c) after  giving  effect to such Credit  Utilization,  (i) the  aggregate
principal  amount of all Revolving Loans and L/C Obligations  outstanding  under
the  Revolving  Credit  shall  not  exceed  the  lesser  of  (x)  the  Activated
Commitments  then in effect and (y) the Borrowing  Base as then  determined  and
computed and (ii) the aggregate  principal amount of the Revolving Loans made to
any Borrower and of L/C  Obligations  in respect of Letters of Credit issued for
such Borrower's account shall not exceed any applicable Sublimit;

      (d) such  Credit  Utilization  shall not  violate  any order,  judgment or
decree of any court or other  authority or any  provision  of law or  regulation
applicable to the Agent or any Lender (including, without limitation, Regulation
U of the Board of  Governors  of the Federal  Reserve  System) as then in effect
(the Lenders  acknowledging that as of the date hereof they know of none of such
other than the restrictions of Regulation U); and

      (e) in the case of the  issuance of any Letter of Credit,  the  Applicable
Issuer shall have received a properly completed Application therefor and, in the
case of an  extension  or  increase  in the amount of the Letter of Credit,  the
Applicable  Issuer shall have  received a written  request  therefor,  in a form
acceptable to the Applicable  Issuer,  with such Application or written request,
in each case to be accompanied by the fees required by this Agreement.

      Any  request  made by or on  behalf  of the  Borrowers  to the Agent or an
Issuer  for a Credit  Utilization  hereunder  shall be  deemed to  constitute  a
representation and warranty that the foregoing statements are true and correct.

      Section 6.2.      Initial  Credit  Utilization.  At or prior to the time
of the initial Credit Utilization,  the following  conditions  precedent shall
also have been satisfied or waived in writing:

      (a) the Agent shall have  received  the  following  for the account of the
Lenders  (each to be properly  executed and  completed)  and the same shall have
been approved as to form and substance by all of the Lenders:

            (i)   the Revolving Credit Notes;

            (ii)  the  Collateral  Documents and the UCC financing  statements
requested by      the Agent in connection therewith;

            (iii)  copies  (executed  or  certified  as may be  appropriate)  of
resolutions of the Board of Directors of each Borrower and Guarantor authorizing
the execution,  delivery and  performance of the Loan Documents to which it is a
party and all other documents relating thereto;

            (iv)  an  incumbency  certificate  in a form  satisfactory  to the
Lenders;

            (v) a good standing  certificate  for each  Borrower and  Guarantor,
dated as of a date no earlier  than thirty days prior to the date  hereof,  from
the appropriate governmental offices in the jurisdiction of its incorporation;

            (vi)  articles of incorporation  and by-laws for each Borrower and
Guarantor   certified by such  Borrower's or Guarantor's  corporate  Secretary
or other appropriate          officer;

            (vii) evidence of the  maintenance  of insurance by the  Borrowers
and Guarantors    as required hereby or by the Collateral Documents;

            (viii)            the Guarantees; and

            (ix) the Agent shall receive the originals of all stock certificates
and other  negotiable  documents  included  within the Collateral  together with
appropriate  signed stock powers or other  instruments  of transfer  therefor or
irrevocable  arrangements for the receipt of same shall have been made which are
satisfactory to the Agent.

      (b)  the  UCC  financing  statements  requested  in  connection  with  the
Collateral Documents shall have been duly filed in the manner required by law so
as to reflect the security interest granted by the Collateral Documents,  to the
extent  such  perfection  can  be  effected  by  the  filing  of  UCC  financing
statements;

      (c) the Lenders  shall have received a certificate  in  substantially  the
form of Exhibit C setting forth the computation of the Borrowing Base as of such
time;

      (d) the Agent and the  Lenders  shall have  received  evidence in form and
substance  satisfactory  to them that the  Series A Notes  and all  indebtedness
outstanding  under  the MES  Revolving  Credit  Agreement  and  the  Dynalectric
Revolving Credit Agreement will be paid in full concurrently with funding of the
initial  Credit  Utilization,  that the credit  facilities  provided for in such
credit  agreements  will thereupon be cancelled (it being  understood  that this
Agreement  is  intended  to  replace  the  credit  facilities  provided  by such
agreements)  and  that  all  Liens  securing  all of such  indebtedness  will be
promptly discharged of record,  provided that in the case of the Series A Notes,
if the Company is precluded from effecting such a full repayment  because of any
requirement  for advance notice of prepayment or redemption then and in any such
event and provided that such redemption may be lawfully  effected within 30 days
of the date hereof, the Company may in lieu of complying with the foregoing give
irrevocable notice of redemption in compliance with all requirements  applicable
to the  redemption of the Series A Notes and deposit the full  redemption  price
(including  accrued  interest)  either  with the  trustee for the holders of the
Series A Notes or with the Agent, any such deposit to be irrevocable;

      (e) the Water  Companies  shall have been sold and the Company  shall have
received cash therefor in an amount not less than the sum of $15,000,000  and an
amount equal to the amount necessary to pay the Series A Notes in full;

      (f)  the  Agent  shall  have  entered  into  an  Intercreditor   Agreement
satisfactory  to it in form and substance  with Reliance  Surety Company and its
Affiliates;

      (g) the Lenders shall have received and approved a description of the self
insurance  and/or  risk  retention  program of the  Company  and the  Restricted
Subsidiaries; and

      (h) all legal matters  incident to the  transactions  contemplated  hereby
shall be  acceptable  to the Lenders and their  counsel and the Agent shall have
received for the account of the Lenders the favorable written opinion of counsel
to the  Borrowers  and the  Guarantors  in  substantially  the form of Exhibit B
hereto  with such  exceptions  and  qualifications  as are  satisfactory  to the
Lenders and their counsel.

      Section 6.3. Activation of the Commitments.  (a) Initial Activation. It is
understood  and  agreed  that  the  initial   Activated   Commitments  shall  be
$50,000,000 and such activation shall occur upon  satisfaction of the conditions
set forth in Section 6.2 hereof. The Guarantors shall initially consist of those
corporations  listed on  Schedule  4.2  hereto  under the  heading  of  "Initial
Guarantors"  and each of such  Guarantors  shall  provide  Liens on those of its
assets  embraced  within the term  "Collateral"  of the  priority  called for by
Section  4.1 hereof.  The balance of the  Commitments  shall be  activated  upon
satisfaction  of the  conditions set forth below (it being  understood  that all
references  below to the  provision of  Commitments  by other  Lenders  shall be
cumulative,  i.e., increases in Commitments  justifying a particular  activation
may not be used to justify a different activation). Anything contained herein to
the contrary  notwithstanding,  no level of Commitment Activation shall occur if
at the time a Default or an Event of Default has occurred and is continuing.
Activations may occur in any order.

      (b) Tranche B Activation.  The Tranche B Activation shall be in the amount
of  $20,000,000  and  shall,  subject to all of the other  terms and  conditions
hereof,  be  conditioned  on the  occurrence of the  following:  (i)  additional
Lenders shall have provided  additional  Commitments  of  $20,000,000,  (ii) all
indebtedness  permitted by Section  7.10(d)  hereof shall have been paid in full
and all  Liens  securing  such  indebtedness  shall  have been  discharged,  (or
arrangements  for such payment in full (effective with the first  utilization of
the amount of Commitments so activated) and for such  discharges  have been made
which are  satisfactory  to the Agent)  (iii) the  Guarantors  listed  under the
heading "To be provided by Tranche B  Activation  Date" shall have  executed and
delivered  Guarantees and provided first Liens on those of their assets embraced
within the term of  "Collateral",  (iv)  EMCOR  International,  Inc.  shall have
provided first Liens on the capital stock of its Restricted  Subsidiaries (other
than that of the Designated  Foreign  Restricted  Subsidiaries  and the Canadian
Subsidiaries)  and (v) all such  Liens  shall  have been duly  perfected  in the
manner  required by law so as to be effective  against the  purchasers  from and
creditors of such  Guarantors  and all  conditions  set forth in Section 6.2 (or
their  equivalents  under applicable law) shall have been satisfied with respect
to such Guarantors and grants of Liens on their assets.

      (c) Tranche C Activation.  The Tranche C Activation shall be in the amount
of $5,000,000 and shall occur upon satisfaction of the following conditions: (i)
additional Lenders shall have provided  additional  Commitments in the amount of
$5,000,000, (ii) all indebtedness permitted by Section 7.10(e) hereof shall have
been fully paid and satisfied and all Liens  securing  such  indebtedness  shall
have been discharged,  (or arrangements for such payment in full (effective with
the first  utilization  of the amount of  Commitments so activated) and for such
discharges  have  been made  which are  satisfactory  to the  Agent),  (iii) the
Guarantors  listed  under the heading  "To be  Provided by Tranche C  Activation
Date" shall have provided  Guarantees  and first Liens on their assets  embraced
within the term "Collateral", (iv) EMCOR International, Inc. shall have provided
first Liens on the capital stock of the Canadian Subsidiaries,  and (v) all such
Liens  shall have been  properly  perfected  so as to be  effective  against all
creditors of and purchasers from such Guarantors and all conditions set forth in
Section  6.2 (or  their  equivalents  under  applicable  law)  shall  have  been
satisfied with respect to such Guarantees and such grants of Liens.

      (d) Tranche D Activation.  The Tranche D Activation shall be in the amount
of $25,000,000 and may occur in one or more  transactions  as additional  Lender
Commitments  are  received.  The  Tranche D  Activation  shall be subject to the
satisfaction  of the following  conditions:  (i)  additional  Lenders shall have
provided Commitments in twice the amount of the Tranche D Activation in question
(it being  understood that Tranche D Activation may occur in steps as additional
Lender  Commitments are provided);  and (ii) no part of the Tranche D Activation
shall occur prior to the later of September  30, 1996 or receipt by the Agent of
evidence  satisfactory  to it that EBITDA has been not less than  $7,500,000 for
each of two successive quarters.

      Upon the occurrence of the Tranche B Activation,  the Tranche C Activation
or the Tranche D  Activation,  the  Commitment  of Harris Trust and Savings Bank
shall be reduced by the amount of the  activation in question  provided that the
amount of the Commitment of Harris Trust and Savings Bank which was an Activated
Commitment  prior to giving  effect to  activation  in  question  shall  only be
reduced  in the case of a Tranche D  Activation  and in that case the  Activated
Commitment  of Harris  Trust and  Savings  Bank  shall be  reduced by 50% of the
amount of the Tranche D Activation in question.

SECTION 7.  COVENANTS.

      The Borrowers  agree that, so long as any credit is available to or in use
by or any  amount is owing by the  Borrowers  hereunder,  except  to the  extent
compliance in any case or cases is waived in writing by the Required Lenders:

      Section 7.1.  Maintenance of Business.  The Borrowers will, and will cause
each  Restricted  Subsidiary  to,  preserve  and keep in force  and  effect  its
corporate existence and all leases, licenses and permits necessary to the proper
conduct of its and their  respective  businesses,  provided  that the  foregoing
shall  not  preclude  the  termination  or  discontinuance  of  any of  such  in
connection with a sale or other  disposition of substantially  all of the assets
of the Restricted Subsidiary in question or the merger or dissolution of same in
each instance to the extent permitted by Section 7.14 hereof.

      Section  7.2.  Maintenance  of  Property.  The  Borrowers  will  maintain,
preserve and keep their  material  plant,  Properties  and equipment used in the
conduct  of their  respective  businesses  in good  repair,  working  order  and
condition  (ordinary  wear and tear  excepted),  will from time to time make all
needful and proper repairs,  renewals,  replacements,  additions and betterments
thereto so that at all times the overall  efficiency  thereof shall be preserved
and maintained, and will cause each Restricted Subsidiary so to do in respect of
its plant, Properties and equipment.

      Section  7.3.  Taxes  and  Assessments.  The  Borrowers  will duly pay and
discharge,  and will cause each Restricted Subsidiary to duly pay and discharge,
all taxes, rates, assessments, fees and governmental charges upon or against the
Borrowers or any Restricted  Subsidiary or against their respective  Properties,
in each case  before the same  become  delinquent  and before  penalties  accrue
thereon,  unless and to the  extent  that the same are being  contested  in good
faith and by  appropriate  proceedings  which prevent  enforcement of the matter
under contest and adequate reserves are provided therefor.

      Section 7.4.  Insurance.  The Borrowers will insure and keep insured,  and
will cause each Restricted Subsidiary to insure and keep insured, with insurance
companies reasonably believed by them to be good and responsible,  all insurable
Property  owned by them  which is of a  character  usually  insured  by  Persons
similarly  situated and operating  like  Properties  against loss or damage from
such hazards and risks, and in such amounts, as are insured by Persons similarly
situated and operating like Properties, and the Borrowers will insure, and cause
each Restricted  Subsidiary to insure,  such other hazards and risks  (including
employers'  and public  liability  risks) with  insurance  companies  reasonably
believed by them to be good and responsible as and to the extent usually insured
by Persons similarly situated and conducting similar businesses, it being agreed
that  the  foregoing  shall  not  preclude  the  Borrowers  and  the  Restricted
Subsidiaries  from  directly or  indirectly  self  insuring  risks as and to the
extent  prudent and customary for companies  similarly  situated.  The Borrowers
shall in any event maintain  insurance on the Collateral to the extent  required
by the  Collateral  Documents.  The  Borrowers  will upon  request  of the Agent
furnish a certificate setting forth in summary form the nature and extent of the
insurance maintained pursuant to this Section 7.4.

      Section 7.5.  Financial  Reports and Rights of  Inspection.  The Borrowers
shall,  and shall  cause each  Restricted  Subsidiary  to,  maintain a system of
accounting in accordance with sound accounting practice and shall furnish to the
Agent,  each  Lender  and each of their  duly  authorized  representatives  such
information respecting the business and financial condition of the Borrowers and
their  Restricted  Subsidiaries  as the  Agent  or such  Lender  may  reasonably
request; and without any request, shall furnish to the Lenders:

            (a) as soon as  available,  and in any event  within sixty (60) days
after  the  last  day of  each  monthly  accounting  period,  a  Borrowing  Base
certificate in the form attached  hereto as Exhibit C showing the computation of
the Borrowing Base in reasonable  detail as of the close of business on the last
day of such period,  prepared by the Company and  certified to by an  Authorized
Representative of the Company;

            (b) as soon as  available,  and in any event  within sixty (60) days
after the close of each monthly  accounting  period of the Company a copy of the
condensed  consolidated and consolidating balance sheet of the Borrowers and the
Restricted  Subsidiaries  as of the last day of such  period  and the  condensed
consolidated (and consolidating in the case of the statement of operations only)
statements of operations,  cash flows and shareholder's  equity of the Borrowers
and the Restricted  Subsidiaries for such period and for the fiscal year-to-date
period then ended, each in reasonable detail and showing in comparative form the
figures for the corresponding date and period in the previous fiscal year in the
case of the condensed  consolidated  financial  statements only, prepared by the
Company in accordance with GAAP (subject to year end audit adjustments which are
not expected to be material and to the absence of footnotes) and  accompanied by
(or  submitted  separately,  in the case of the last such  period in each fiscal
year) reports for the Borrowers and the Restricted  Subsidiaries as of the close
of such month of work in process,  accounts  receivable and accounts payable all
in forms  acceptable  to the  Agent  provided,  however,  that (i)  consolidated
financial  statements  need not be  submitted  for the last  monthly  accounting
period  in each  fiscal  year and (ii) the  consolidating  financial  statements
called for by this Section 7.5(b) for the last monthly accounting period in each
fiscal year may be  submitted  concurrently  with the  submittal  of the audited
financial statements for such fiscal year called for by Section 7.5(c) hereof;

            (c) as soon as  available,  and in any event within one hundred five
(105) days after the close of each annual  accounting  period of the Company,  a
copy of the consolidated  balance sheet of the Borrowers and their  Subsidiaries
as of the last day of the period then ended and the  consolidated  statements of
operations,  cash  flows and  shareholder's  equity of the  Borrowers  and their
Subsidiaries for the period then ended, and accompanying notes thereto,  each in
reasonable  detail  showing in  comparative  form the figures  for the  previous
fiscal year,  accompanied by an unqualified  opinion  thereon of Arthur Andersen
LLP or another firm of independent  public  accountants  of recognized  national
standing,  selected by the Company and reasonably  satisfactory  to the Required
Lenders,  to the effect that the  consolidated  financial  statements  have been
prepared in accordance  with GAAP and present fairly in accordance with GAAP the
consolidated  financial  condition of the Borrowers and their Subsidiaries as of
the close of such fiscal year and the  consolidated  results of their operations
and cash flows for the fiscal  year then ended and that an  examination  of such
accounts  in  connection  with  such  financial  statements  has  been  made  in
accordance with generally  accepted auditing  standards and,  accordingly,  such
examination  included  such  tests of the  accounting  records  and  such  other
auditing procedures as were considered necessary in the circumstances;

            (d) within the period provided in subsection (c) above,  the written
statement of the  accountants  who certified the audit report  thereby  required
that in the course of their audit they have obtained no knowledge of any Default
or Event of Default, or, if such accountants have obtained knowledge of any such
Default or Event of Default,  they shall  disclose in such  statement the nature
and period of existence thereof;

            (e) promptly after receipt of final copies  thereof,  any additional
written reports,  management letters or other detailed information  contained in
writing  concerning  significant  aspects of any  Borrower's  or any  Restricted
Subsidiary's  operations  and financial  affairs given to it by its  independent
public accountants; and

            (f)  promptly  after  knowledge  thereof  shall  have  come  to  the
attention of the chief  executive or chief  financial  officer of any  Borrower,
written notice of (i) any pending litigation or governmental proceeding or labor
controversy  against any Borrower or Restricted  Subsidiary  which, if adversely
determined,  could  reasonably be expected to have a Material  Adverse Effect or
(ii) any threatened  litigation,  governmental  proceeding or labor  controversy
against any Borrower or Restricted Subsidiary which the Company or such Borrower
or Restricted  Subsidiary in good faith believes could reasonably be expected to
have a Material  Adverse  Effect or (iii) the occurrence of any Default or Eveof
Default hereunder.

      Each of the  financial  statements  furnished  to the Lenders  pursuant to
subsections  (b) and (c) of this Section 7.5 shall be  accompanied  by a written
certificate  in the form  attached  hereto as Exhibit D signed by an  Authorized
Representative  of the Company to the effect that to the best of such  officer's
knowledge  and belief no Default or Event of  Default  has  occurred  during the
period  covered by such  statements  or, if any such Default or Event of Default
has occurred during such period,  setting forth a description of such Default or
Event of Default  and  specifying  the action,  if any,  taken by the Company to
remedy the same.  Such  certificate  submitted  as of the last day of a calendar
quarter  shall also set forth the  calculations  supporting  such  statements in
respect of Sections 7.6, 7.7, 7.8, 7.9 and 7.13 of this Agreement as well as the
calculation  of the  Applicable  Margin and shall be  accompanied by a report in
reasonable   detail  of  all  litigation,   arbitrations  and  mediations  being
prosecuted  by the Company and its  Restricted  Subsidiaries  against  customers
where the  amount  claimed is  $1,000,000  or more and is carried as an asset at
$500,000 or more on the books of the Company or a Restricted Subsidiary.

      The Borrowers will, and will cause each  Restricted  Subsidiary to, permit
the Agent,  the Lenders and their duly authorized  representatives  to visit and
inspect any of the Properties of the Borrowers and Restricted  Subsidiaries,  to
examine all of their books of account,  records,  reports and other  papers,  to
make copies and extracts  therefrom,  and to discuss their  respective  affairs,
finances and accounts with their respective officers,  employees and independent
public  accountants  (and  by  this  provision  the  Borrowers   authorize  such
accountants  to discuss  with the  Lenders  (and such  Persons as any Lender may
designate,  subject to reasonable arrangements for confidentiality) the finances
and  affairs  of the  Borrowers  and the  Restricted  Subsidiaries)  all at such
reasonable times and as often as may be reasonably requested.

      Section 7.6.  Adjusted  Tangible Net Worth.  The Company will at all times
subsequent to June 30, 1996 during each fiscal year maintain  Adjusted  Tangible
Net Worth of not less than  $125,000,000  plus (but not minus if a negative) 50%
of Net  Income  for the  period  from  January  1,  1996 to the  last day of the
immediately preceding fiscal year.

      Section 7.7.      Leverage   Ratio.   The  Company  will  at  all  times
maintain a Leverage Ratio of not more than .45 to 1.

      Section 7.8.  Interest Coverage Ratio. The Company will as of the last day
of each  calendar  quarter  have a ratio  for the four most  recently  completed
calendar  quarters of EBITDA to  Interest  Expense of not less than 1.85 to 1 in
the case of determinations  made with respect to a computation  period ending on
or  prior to  December  31,  1997  and not less  than 2 to 1 in the case of each
determination made thereafter;  provided that such ratio shall be computed as of
June 30, 1996 for the quarter  then  ending,  as of  September  30, 1996 for the
period of two calendar  quarters then ending and as of December 31, 1996 for the
period of three calendar quarters then ending.

      Section  7.9.  Current  Ratio.  The Company  will at all times  maintain a
ratio,  computed on a  consolidated  basis for the  Company  and the  Restricted
Subsidiaries,  of current  assets to current  liabilities  (each  determined  in
accordance with GAAP) of not less than 1 to 1.

      Section 7.10.  Indebtedness  for Borrowed Money.  The Borrowers shall not,
nor shall they  permit any of the  Restricted  Subsidiaries  to,  issue,  incur,
assume,  create  or  have  outstanding  any  Indebtedness  for  Borrowed  Money;
provided, however, that the foregoing shall not restrict nor operate to prevent:
            (a)   the Obligations;

            (b)   Subordinated Debt;

            (c)   the  obligations   listed  and  described  on  Schedule 7.10
attached hereto and     guarantees   specifically  permitted  by  Section 7.12
hereof;

     (d)  unless  and  until  the  Tranche  B  Activation   Date  has  occurred,
indebtedness of EMCOR U.K. Limited and its Restricted  Subsidiaries  aggregating
not more  than  (pound)25,000,000  at any one time  outstanding  and  guarantees
thereof  by  EMCOR  International,  Inc.  and/or  EMCOR  U.K.  Limited  and  its
Restricted Subsidiaries;

            (e) unless and until the  Tranche C  Activation  Date has  occurred,
indebtedness of the Canadian Subsidiaries  aggregating not more than $10,000,000
at any one time outstanding;  and guarantees of up to $5,000,000  thereof by the
Company and Restricted Subsidiaries.

            (f)  Indebtedness  of the  Company to  Restricted  Subsidiaries,  of
Restricted  Subsidiaries  to the  Company  and  of  Restricted  Subsidiaries  to
Restricted  Subsidiaries  provided that \(i)  indebtedness of EMCOR U.K. Limited
and its Restricted  Subsidiaries shall be limited to (pound)7,500,000  until the
Tranche B Activation  Date and $35,000,000  thereafter and (ii)  indebtedness of
the Canadian  Subsidiaries and its Restricted  Subsidiaries  shall be limited to
$5,000,000 until the Tranche C Activation Date and $10,000,000 thereafter;

            (g) obligations  consisting of deferred  payment  obligations of the
Company  and  any of the  Restricted  Subsidiaries  for  insurance  premiums  or
incurred by Company or any of its  Restricted  Subsidiaries  in respect of funds
borrowed for the payment of such premiums in either case in the ordinary  course
of business and consistent with past practices;

            (h) Indebtedness for Borrowed Money of Designated Foreign Restricted
Subsidiaries (and guarantees thereof by the Company,  EMCOR International,  Inc.
and Restricted  Subsidiaries of EMCOR International,  Inc.) and guarantees of or
incurrence  of  liability  for letters of credit  supporting,  Indebtedness  for
Borrowed Money of Persons in which the Company and the  Restricted  Subsidiaries
are  permitted to invest  pursuant to subsection  (n) of Section 7.12;  provided
that the aggregate  amount of Indebtedness for Borrowed Money so permitted to be
incurred,  guaranteed or supported pursuant to the provisions of this subsection
(h) shall not exceed (pound)5,000,000 at any one time outstanding;

            (i)  Indebtedness  for Borrowed  Money in addition to that otherwise
permitted hereunder provided that at the time of incurrence of such indebtedness
and after giving effect thereto the aggregate  principal  amount of Indebtedness
for  Borrowed  Money of the Company  and its  Restricted  Subsidiaries  incurred
during the  twelve-month  period ended on the date of the incurrence in question
and permitted solely by this Section 7.10(i) donot exceed  seven-tenths of 1% of
the arithmetic  average of the unrealized  revenue from contracts in progress of
the Company and its  Restricted  Subsidiaries  (computed in accord with the past
practice  of the  Company)  as of the  last  day of  each of the  four  calendar
quarters most recently ended prior to the date of the computation in question;

            (j)  liabilities  in respect  of  letters  of credit  not  otherwise
permitted  by this  Section  7.10 if payment of such  letters of credit is fully
supported by a Letter of Credit; and,

            (k) any renewals,  extensions or replacements  of  Indebtedness  for
Borrowed Money permitted  under this Section 7.10 in an aggregate  amount not in
excess of the  Indebtedness  for  Borrowed  Money  being  renewed,  extended  or
replaced.

      Section 7.11.  Liens.  The Borrowers  shall not, nor shall they permit the
Restricted  Subsidiaries  to,  create,  incur or permit to exist any Lien of any
kind on any  Property  owned  by the  Borrowers  or any  Restricted  Subsidiary;
provided, however, that the foregoing shall not apply to nor operate to prevent:

            (a)  Liens   arising  by  statute  in   connection   with   worker's
compensation,   unemployment  insurance,  old  age  benefits,   social  security
obligations, taxes, assessments, statutory obligations or other similar charges,
good faith cash deposits in connection  with the foregoing or in connection with
tenders,  contracts or leases to which the Borrowers or any of their  Restricted
Subsidiaries  are a party  or other  cash  deposits  required  to be made in the
ordinary  course of business,  provided in each case that the  obligation is not
for  borrowed  money  and that the  obligation  secured  is not  overdue  or, if
overdue,  is being  contested  in good faith by  appropriate  proceedings  which
prevent  enforcement of the matter under contest and adequate reserves have been
established therefor;

            (b) mechanics',  workmen's,  materialmen's,  landlords',  carriers',
osimilar  Liens  arising in the  ordinary  course of  business  with  respect to
obligations  which  are not due or which are being  contested  in good  faith by
appropriate proceedings which prevent enforcement of the matter under contest;

            (c) the pledge of assets for the purpose of securing an appeal, stay
or discharge in the course of any legal proceeding,  provided that the aggregate
amount of liabilities of the Borrowers and their Restricted Subsidiaries secured
by a pledge of assets  permitted under this subsection,  including  interest and
penalties  thereon,  if any,  shall not be in excess of $500,000 at any one time
outstanding;

            (d)   the Liens  granted in favor of the Agent for the  benefit of
the Lenders       pursuant to the Collateral Documents;

            (e)  Liens  on  Property  of  the  Borrowers  or of  any  Restricted
Subsidiaries created solely for the purpose of securing  indebtedness  permitted
by Section  7.10(i)  hereof  representing  or incurred to finance,  refinance or
refund the purchase  price of such  Property,  provided  that no such Lien shall
extend to or cover other Property of the Borrowers or any Restricted  Subsidiary
other than the  respective  Property so acquired,  and the  principal  amount of
indebtedness  secured  by any such Lien  shall at no time  exceed  the  original
purchase price of such Property;

            (f)   Liens on the stock and assets of EMCOR U.K.  Limited  and on
the assets  of the  corporations  identified  in  subsections (d)  and  (e) of
Section 7.10 hereof securing the    indebtedness     permitted     by     such
subsections and/or unless and until the Tranche B     Activation    Date   has
occurred, securing Performance Guarantees;

            (g)   Liens  in  favor  of   Reliance   Surety   Company  and  its
Affiliates described in       clause (i) of the second  proviso to Section 4.1
hereof;

            (h) rights of  subrogation  and similar  rights of issuers of surety
bonds and  unperfected  lien rights of such  issuers to assets  associated  with
projects which they have bonded;

            (i)   restrictions  on  the  disbursement  or  withdrawal  of  funds
deposited by Restricted  Subsidiaries in bank accounts maintained by them in the
ordinary  course of business  consistent with past practice which are maintained
in  connection  with  specific  construction  projects or  contracts  from which
payments and disbursements  with respect to such contracts or projects are to be
made;

            (j) Liens on  insurance  policies  arising  in  connection  with the
deferred payment of premiums or the financing  thereof in the ordinary course of
business;

            (k)   Liens  consisting  of  cash  collateral   deposits  made  in
connection with the     insurance  program of the Company  and its  Restricted
Subsidiaries;

            (l) Liens existing on any property of a corporation at the time such
corporation  becomes a  Restricted  Subsidiary  which  Liens  were not  created,
incurred or assumed in contemplated  thereof,  provided that no such Liens shall
extend  to or  cover  any  other  property  of the  Company  or  any  Restricted
Subsidiary;

            (m)   the Liens  listed and  described on  Schedule 7.11  attached
hereto;

            (n) any extension, renewal or replacement (or successive extensions,
renewals or  replacements)  of Liens  permitted by this Section 7.11 without any
increase  inamount of  indebtedness  secured thereby or in the assets subject to
such Liens;

            (o)   Liens  on  the  capital  stock  of MES  Holding  Corporation
securing the      Series A  Notes  unless  and  until the  Series A  Notes are
redeemed; and

            (p) Liens on assets of Designated  Foreign  Restricted  Subsidiaries
securing  indebtedness  thereof  permitted  by Section  7.10  hereof or securing
Performance Guarantees.

      Section 7.12. Investments,  Acquisitions,  Loans, Advances and Guarantees.
The  Borrowers   shall  not,  nor  shall  they  permit  any  of  the  Restricted
Subsidiaries  to, directly or indirectly,  make,  retain or have outstanding any
investments  (whether through purchase of stock or obligations or otherwise) in,
or loans or advances  (other than for relocation  and travel  advances and other
cash  advances  made to employees in the  ordinary  course of business)  to, any
other Person,  or acquire all or any substantial  part of the assets or business
of any other  Person or division  thereof,  or be or become  liable as endorser,
guarantor,  surety or otherwise for any debt,  obligation or  undertaking of any
other Person, or otherwise agree to provide funds for payment of the obligations
of another,  or supply funds  thereto or invest  therein or  otherwise  assure a
creditor of another against loss, or apply for or become liable to the issuer of
a letter of credit which supports an obligation of another,  or subordinate  any
claim  or  demand  it may have to the  claim  or  demand  of any  other  Person;
provided, however, that the foregoing shall not apply to nor operate to prevent:

            (a)  investments  in  direct  obligations  of the  United  States of
America or of any agency or instrumentality thereof whose obligations constitute
full faith and credit obligations of the United States of America, provided that
any such  obligations  shall  mature  within  one  year of the date of  issuance
thereof;

            (b) investments in commercial  paper maturing within 270 days of the
date of issuance  thereof which has been accorded one of the two highest ratings
available  from the Standard & Poor's  Ratings  Group of McGraw Hill  Companies,
Moody's Investors Service, Inc. or any other nationally recognized credit rating
agency of similar standing providing similar ratings;

            (c)  investments in certificates of deposit issued by any commercial
bank  organized  under  the  laws  of  Canada  or the  United  States  or (as to
investments of EMCOR U.K.  Limited and its  Subsidiaries)  the United Kingdom in
each  case  having  capital,  surplus  and  undivided  profits  of not less than
$500,000,000  or by any  Lender in each case  maturing  within one year from the
date of issuance  thereof or in Eurodollar time deposits  maturing not more than
one year from the date of  acquisition  thereof  placed with any Lender or other
such  commercial  bank (to the extent  investments  in  certificates  of deposit
issued by such other  bank are  permitted  by this  subsection)  or in  banker's
acceptances  endorsed by any Lender or other such commercial bank (to the extent
investments in  certificates  of deposit issued by such other bank are permitted
by this subsection) and maturing within nine months of the date of acceptance;

            (d)   endorsement   of  items  for   deposit  or   collection   of
commercial paper  received in the ordinary course of business;

            (e)   the investments,  loans,  advances and guarantees listed and
described on      Schedule 7.12 attached hereto;

            (f)   the Guarantees  and guarantees  referred to in and permitted
by Section 7.10   hereof;

            (g)  (i)  the  present  investment  of the  Company  and  Restricted
Subsidiaries  in, and present  loans and advances by the Company and  Restricted
Subsidiaries to,  Unrestricted  Subsidiaries and (ii) future investments in, and
loans and advances, (including subordinated loans) to, Unrestricted Subsidiaries
for asset preservation and to preserve existing operations  aggregating not more
than $1,500,000 at any one time outstanding;

            (h) Loans and advances  (including  subordinated loans and advances)
between the Company and its  Restricted  Subsidiaries  if and to the extent that
the corresponding indebtedness is permitted by Section 7.10 hereof;

            (i) acquisitions by the Company or any Restricted  Subsidiary of all
or  substantially  all of the assets or business of any other Person or division
thereof, or of all or substantially all of the Voting Stock of a Person, so long
as (i) no Default or Event of Default  exists or would exist after giving effect
to such acquisition, (ii) the Board of Directors or other governing body of such
Person  whose  Property or Voting  Stock is being so acquired  has  approved the
terms of such  acquisition,  and (iii) the total amount  expended by the Company
and  its  Restricted   Subsidiaries  for  such  acquisitions   (other  than  the
contemplated  acquisition of the Tucker Company) does not aggregate in excess of
the amount permitted by Section 7.13 hereof;

            (j)   acquisitions of assets  (including notes and other evidences
of indebtedness)  and  subordinations  of  claims  as a  part  of  good  faith
collection efforts on doubtful      accounts;

            (k)   Performance Guarantees;

            (l) notes and other deferred payment obligations (other than general
partnership  and similar  interests)  acquired by the Company or any  Restricted
Subsidiary in connection with the sale or other  disposition of assets permitted
hereby;

            (m) investments of the Company or any Restricted  Subsidiary made in
the ordinary course of business in connection with joint ventures,  corporations
or other similar  pooling of efforts in respect to a specific  project or series
of  related  specific  projects  for a limited or fixed  duration  and formed to
conduct business of the type in which the Company or such Restricted  Subsidiary
is  presently   engaged   consistent  with  past  practices  and  guarantees  of
obligations  of, and  incurrence of  liabilities in respect of letters of credit
for, such joint ventures or corporations;

            (n) investments in joint  ventures,  corporations or similar pooling
of efforts  organized  outside of and  conducting  its  business  outside of the
United  States  of  America  entered  into  for the  purpose  of  expanding  the
mechanical  and/or  electrical   business  of  the  Company  or  any  Restricted
Subsidiary  into a  jurisdiction  in  which  it  has  not  previously  conducted
substantial business, provided that the aggregate amount invested or expended in
connection  with the  foregoing  purposes  shall not  aggregate in excess of the
amount permitted by Section 7.13 hereof;

            (o)   investments  in money  market  funds  which  in turn  invest
primarily in      investments  of the types  described  in clauses (a) through
(c) of this Section 7.12;

            (p)  the  present   investment   of  the   Company  and   Restricted
Subsidiaries  in  Restricted  Subsidiaries  and  future  investments  by them in
Restricted  Subsidiaries  which are  Guarantors  or in a  Restricted  Subsidiary
formed as a captive insurer; and

            (q)  investments by Designated  Foreign  Restricted  Subsidiaries in
short term high quality  investments  which are  regarded in their  countries of
domicile  as  being  similar  in type and used  for  similar  purposes  to those
described in clauses (a), (b), (c) or (o) of this Section 7.12.

      In determining the amount of investments,  acquisitions,  loans,  advances
and guarantees  permitted under this Section 7.12,  investments and acquisitions
shall always be taken at the original cost thereof (regardless of any subsequent
appreciation or depreciation therein),  loans and advances shall be taken at the
principal amount thereof then remaining unpaid, and guarantees shall be taken at
the amount of obligations guaranteed thereby.

      Section  7.13.  Capital and Certain  other  Restricted  Expenditures.  The
Borrowers will not, nor will they permit any Restricted  Subsidiary to, make, or
(without  duplication) become obligated to make, any Capital Expenditure or make
any  acquisition  permitted  solely  by  Section  7.12(i)  hereof  or  make  any
investment  described in Section  7.12(n) hereof or apply for a letter of credit
(whether  hereunder or otherwise)  supporting an obligation of any joint venture
or other Person  described in Section  7.12(n) or guarantee any  Indebtedness of
Borrowed Money of any such Person,  if after giving effect thereto the aggregate
amount  expended  (other than in the form of capital  stock of the  Company) for
such  purposes  during  the  twelve-month  period  ending  on  the  date  of the
expenditure in question when taken together with the face amount of such letters
of credit issued during such period and such indebtedness so guaranteed incurred
during such period,  would exceed the sum of (i) 1% of the arithmetic average of
the  unrealized  revenue  from  contracts  in  progress  of the  Company and its
Restricted  Subsidiaries  (computed  in  accord  with the past  practice  of the
Company) as of the last day of each of the four calendar  quarters most recently
completed  prior to the  computation  in  question  (ii)  the net cash  proceeds
received by the Company and the Restricted  Subsidiaries  during the same period
from sales of assets (including stock of Restricted  Subsidiaries)  permitted by
Sections 7.14 and/or 7.15 hereof and (iii) the maximum amount of dividends which
the Company could pay under Section 7.16(i) as of the date of the expenditure or
application in question.

      Section 7.14.  Mergers,  Consolidations  and Sales. The Company shall not,
nor shall it permit  any of its  Restricted  Subsidiaries  to, be a party to any
merger,  consolidation  or dissolution,  or sell,  transfer,  lease or otherwise
dispose  of  all  or  any  substantial  part  of  its  Property,  including  any
disposition of Property as part of a sale and leaseback  transaction,  or in any
event sell or discount  (with or without  recourse) any of its notes or accounts
receivable (other than sales or discounts of doubtful accounts or notes taken in
satisfaction of same); provided, however, that this Section 7.14 shall not apply
to nor operate to prevent the  Borrowers or any of the  Restricted  Subsidiaries
from selling  their  inventory  in the  ordinary  course of its business or from
selling  equipment  which is  obsolete,  worn out,  or no longer  needed for the
operation  of the  business of the Company and the  Restricted  Subsidiaries  or
which is promptly  replaced  with  equipment of at least equal utility nor shall
the foregoing prohibit (i) mergers of Restricted  Subsidiaries with and into the
Company and sales by  Restricted  Subsidiaries  of all or  substantially  all of
their assets to the Company (ii) mergers of  Restricted  Subsidiaries  with each
other  and  sales of all or  substantially  all of the  assets  of a  Restricted
Subsidiary to another Restricted Subsidiary provided in each case that if either
of the two Restricted  Subsidiaries in question is a Guarantor,  the survivor of
the  transaction in question  remains a Guarantor and all such actions are taken
as the  Agent  requires  to  preserve  its  Liens on the  Collateral,  (iii) the
dissolution of any Restricted  Subsidiary whose activities are no longer, in the
opinion of the Board of Directors of the Company, necessary for the operation of
the business of the Company and its  Restricted  Subsidiaries  taken as a whole,
provided  always  that no  Default  or  Event of  Default  has  occurred  and is
continuing  or will result  therefrom  and if the  Restricted  Subsidiary  to be
dissolved is a Guarantor,  all of its assets  remaining after the dissolution in
question are transferred to another Guarantor and all such actions,  if any, are
taken as the Agent may reasonably  require in order to insure that it has a Lien
on the assets so transferred of the priority required by Section 4.1 hereof. The
foregoing provisions to the contrary notwithstanding, prior to the Consolidation
Date, DYN and its Restricted  Subsidiaries  shall not engage in any  transaction
otherwise permitted by clauses (i), (ii) or (iii) of the foregoing proviso.  The
term "substantial" as used herein shall mean the sale, transfer,  lease or other
disposition of five percent (5%) or more of the total consolidated assets of the
Company and the Restricted  Subsidiaries in any calendar year, whether in one or
a series of transactions.  The Agent shall release its Lien on any Property sold
pursuant  to the  foregoing  provisions  if no Default  or Event of Default  has
occurred and is continuing or would result therefrom.

      Section 7.15. Maintenance of Restricted Subsidiaries.  The Borrowers shall
not assign,  sell or transfer,  or permit any  Restricted  Subsidiary  to issue,
assign,  sell  or  transfer,  any  shares  of  capital  stock  of  a  Restricted
Subsidiary;  provided  that the  foregoing  shall not operate to prevent (i) the
issuance,  sale and  transfer to any person of any shares of capital  stock of a
Restricted  Subsidiary  solely for the purpose of qualifying,  and to the extent
legally  necessary to qualify,  such person as a director of such  Subsidiary or
(ii) the sale of all of the capital stock of a Restricted Subsidiary if but only
if (a) no Default or Event of Default has  occurred  and is  continuing  or will
result from the sale of same,  (b) the sale of such capital  stock is not a sale
of a  substantial  part  of  the  assets  of  the  Company  and  the  Restricted
Subsidiaries (as the term "substantial" is defined in Section 7.14 hereof),  (c)
the  Board of  Directors  of the  Company  has  determined  that  the  continued
ownership of the Restricted  Subsidiary in question is no longer  appropriate in
light  of the  then  needs  and  strategic  objectives  of the  Company  and its
Restricted  Subsidiaries  taken  as a whole  and (d)  all  indebtedness  of such
Restricted  Subsidiary to the Company or any other Restricted Subsidiary is paid
in full,  and all  guarantees  or other  support  undertakings  provided  by the
Company or other Restricted  Subsidiaries are discharged,  concurrently with the
sale in question, provided that then existing Performance Guarantees need not be
so  discharged  as to  jobs in  progress  at the  time  the  sale is  completed.
Concurrently  with the sale of the  capital  stock  of a  Restricted  Subsidiary
permitted hereby,  the Agent is authorized and directed to release any Guarantee
provided by such  Restricted  Subsidiary  and any Lien on the stock or assets of
such  Restricted  Subsidiary.  The  Borrower  shall not  permit  any  Restricted
Subsidiary  to enter  into any  contract  or  agreement  after  the date  hereof
prohibiting or restricting  such Restricted  Subsidiary from paying dividends or
making  loans and  advances  to the Company  except in the case of a  Restricted
Subsidiary formed or acquired to be a captive insurer.

      Section 7.16. Dividends and Certain Other Restricted Payments. The Company
will not during any fiscal year (a) declare or pay any  dividends on or make any
other  distributions  in  respect  of any class or series of its  capital  stock
(except for dividends  payable  solely in its capital  stock) or (b) directly or
indirectly  purchase,  redeem or otherwise  acquire or retire any of its capital
stock or any options or warrants therefor or (c) directly or indirectly make any
payment of  principal  on or in respect of any  Subordinated  Debt or  otherwise
acquire,  prepay or retire any of such Subordinated  Debt, in each case prior to
the maturities  thereof or prior to any other times required for payment thereof
as are in force and effect as of the date hereof;  provided,  however,  that the
foregoing shall not apply to nor operate to prevent:

            (i) the declaration  and payment of  non-excepted  dividends and the
non- excepted purchase, redemption or other acquisition or retirement of capital
stock or  warrants  or  options  of the  Company  occurring  in each case  after
December  31, 1997 if after giving  effect  thereto  (aa) the  aggregate  amount
expended by the Company for such  purposes  during the period  commencing on the
first day of the third fiscal quarter  preceding the fiscal quarter in which the
declaration  or  payment  in  question  occurred  and  ending on the date of the
declaration  or payment in  question  would not exceed 50% of Net Income for the
period of four consecutive  fiscal quarters most recently completed plus the net
amount  received by the Company  from the sale of its capital  stock or warrants
therefore  during  such  period  or  thereafter  and  through  the  date  of the
declaration  or payment in question  less any portion of such net amount used to
justify a payment  under  clause  (ii)  below and also less any  portion  of the
amount as  otherwise  computed  pursuant  to this  clause  (i) which was used to
justify a  transaction  under  Section 7.13 pursuant to clause (iii) thereof and
(bb) no Default or Event of Default shall have occurred and be continuing;

            (ii) non-excepted  principal payments or acquisitions,  pre-payments
or  retirements  of  Subordinated  Debt if after giving effect  thereto (aa) the
aggregate  amount  paid by the  Company for the  foregoing  purposes  during the
period  commencing  on the first day of the third fiscal  quarter  preceding the
fiscal quarter in which the payment in question  occurred and ending on the date
of the payment in  question  would not exceed the  difference  for the period of
four consecutive  fiscal quarters most recently completed between (A) Net Income
plus the amount by which Net Income was reduced as a result of  depreciation  of
fixed assets and the amortization of intangibles plus the net amount received by
the Company from the sale of its capital stock or warrants  therefor during such
period or  thereafter  and through the date of the payment in question  less any
portion of such net amount used to justify a payment  under clause (i) above and
(B) the amount  expended  by the  Company and its  Restricted  Subsidiaries  for
Capital  Expenditures  and for  acquisitions  permitted  by Section  7.12(i) and
investments in ventures  provided  solely by Section  7.12(n) hereof and (bb) no
Default or Event of Default shall have occurred and be continuing.

      Nothing herein  contained shall affect,  impair or limit the rights of the
Lenders or the Agent  acting on their behalf to serve any notice on the Company,
the  holders of  Subordinated  Debt or any trustee or agent  therefor  blocking,
limiting  or  otherwise  precluding  the making of  payments  on account of such
Subordinated Debt on and subject to the conditions to service of any such notice
contained in the  instruments  applicable  to such  Subordinated  Debt nor shall
anything contained herein be deemed to permit the Company to make any payment on
account of  Subordinated  Debt precluded by any such notice properly given or by
the instruments setting forth the terms applicable to such Subordinated Debt.

      Section  7.17.  ERISA.  The Borrowers  shall,  and shall cause each of the
Restricted  Subsidiaries  to,  promptly pay and  discharge all  obligations  and
liabilities  arising under ERISA of a character  which if unpaid or  unperformed
might result in the  imposition of a Lien against any of their  Properties.  The
Borrowers  shall,  and  shall  cause  each of the  Restricted  Subsidiaries  to,
promptly  notify  the  Agent  and  each  Lender  of (i)  the  occurrence  of any
reportable event (as defined in ERISA) with respect to any employee benefit plan
subject to Title IV of ERISA  (other than a  multiemployer  plan)  sponsored  or
contributed to by either of the Borrowers or any member of the Controlled  Group
(a  "Plan")  with  respect  to  which  the PBGC has  neither  waived  the 30 day
reporting  requirement  nor  issued  a  public  announcement  that  the  penalty
applicable  to a failure to report  will not apply,  (ii)  receipt of any notice
from the PBGC of its intention to seek termination of any Plan or appointment of
a trustee  therefor,  (iii) its intention to terminate any Plan or withdraw from
any  multiemployer  plan if such  termination or withdrawal  could reasonably be
expected to have a Material Adverse Effect, and (iv) the occurrence of any other
event with  respect  to any Plan which  would  result in the  incurrence  by the
Borrowers or any of their  Restricted  Subsidiaries  of any material  liability,
fine or penalty,  or any material  increase in the  contingent  liability of the
Borrowers  or  any  of  the   Restricted   Subsidiaries   with  respect  to  any
post-retirement  Welfare Plan benefit which could reasonably be expected to have
a Material Adverse Effect.

      Section 7.18.  Compliance  with Laws. The Company  shall,  and shall cause
each  of its  Restricted  Subsidiaries  to,  comply  in all  respects  with  the
requirements of all foreign  (whether  national,  supra-national  or otherwise),
federal,  state  and local  laws,  rules,  regulations,  ordinances  and  orders
applicable  to  or  pertaining  to  their  Properties  or  business  operations,
non-compliance  with which could have a Material  Adverse Effect or could result
in a Lien upon any of their Property  material to the Company and the Restricted
Subsidiaries taken as a whole.

      Section 7.19. Burdensome Contracts With Affiliates. The Company shall not,
nor  shall it permit  any of its  Restricted  Subsidiaries  to,  enter  into any
contract,  agreement or business  arrangement with any of its Affiliates  (other
than  with or among  Restricted  Subsidiaries  and the  Company)  on  terms  and
conditions  which  are less  favorable  to the  Company  or any such  Restricted
Subsidiary than would be usual and customary in similar contracts, agreements or
business arrangements between Persons not affiliated with each other.

      Section 7.20.     Amendments  to  Subordinated  Debt.  The Company shall
not  amend  or  modify  the   subordination   provisions   applicable  to  any
Subordinated Debt.

      Section 7.21.     No  Changes  in Fiscal  Year.  The  Company  shall not
change its fiscal  years from its  present  basis  without  the prior  written
consent of the Required Lenders.

      Section 7.22.  Formation of  Subsidiaries.  The Company will not, and will
not permit any Restricted  Subsidiary to, form or acquire any Subsidiary  except
for  acquisitions  permitted  by Section  7.11 hereof and the  formation  of new
subsidiaries  if in any such case and either of such  instances the newly formed
or acquired  Subsidiary  shall, if the Required Lenders so request,  execute and
deliver a Guarantee  and grant Liens on its assets of the  priority  required by
Section 4.1 hereof (and provide the Agent with such documentation  therefore and
such  supporting  documentation,  including  opinions  of  counsel,  as  it  may
reasonably  request).  Each Subsidiary  acquired or formed pursuant hereto shall
constitute a Restricted  Subsidiary  unless the Required Lenders otherwise agree
in writing.

      Section 7.23. Change in the Nature of Business. The Company shall not, and
shall not permit any of the Restricted  Subsidiaries  to, engage in any business
or activity if as a result the general nature of the business of the Company and
the Restricted  Subsidiaries  would be changed in any material  respect from the
general  nature of the  business  engaged in by the Company  and the  Restricted
Subsidiaries on the date of this Agreement.

SECTION 8.  EVENTS OF DEFAULT AND REMEDIES.

      Section 8.1.      Events of  Default.  Any one or more of the  following
shall constitute an Event of Default hereunder:

            (a)  default  in the  payment  when  due of all or any  part  of the
principal of the Revolving  Credit Notes (whether at the stated maturity thereof
or at any other time  provided for in this  Agreement)  or of any  Reimbursement
Obligation  and any such  default  continues  for 1  Business  Day after  notice
thereof from the Agent to the Company;

            (b) default in the payment  when due of all or part of the  interest
on any  Revolving  Credit Note  (whether the stated  maturity  thereof or at any
other time provided for in this Agreement) or of any fee or other amount payable
hereunder or under any other Loan Document and any such default  continues for 5
Business Days after notice thereof from the Agent to the Company;

            (c) default in the  observance  or  performance  of any covenant set
forth in Sections 7.6, 7.7, 7.8, 7.9, 7.13,  7.14, 7.15, 7.16, or 7.20 hereof or
of any provision in any Loan Document  dealing with the maintenance of insurance
on the Collateral;

            (d) default in the observance or performance of any other  provision
hereof or of any other Loan  Document  which is not remedied  within thirty days
after the earlier of (i) the date on which such failure shall first become known
to any officer of the Company or (ii) written  notice  thereof to the Company by
the Agent;

            (e) any  representation  or  warranty  made  herein or in any of the
other Loan Document or in any certificate  furnished to the Agent or the Lenders
pursuant hereto or thereto or in connection  with any  transaction  contemplated
hereby or thereby  proves  untrue in any material  respect as of the date of the
issuance or making thereof;

            (f) any event occurs or condition exists (other than those described
in subsections  (a) through (d) above) which is specified as an event of default
under any of the other Loan Documents and any period of grace applicable thereto
shall have elapsed,  or any of the Loan Documents shall for any reason not be or
shall  cease to be in full force and  effect,  or any of the Loan  Documents  is
declared to be null and void, or any of the Collateral  Documents  shall for any
reason  fail to create a valid and  perfected  Lien in favor of the Agent in any
Collateral  purported to be covered thereby of the priority  required by Section
4.1 hereof;

            (g)  default  shall occur under any  evidence  of  Indebtedness  for
Borrowed Money  aggregating in excess of $500,000 issued,  assumed or guaranteed
by any of the Borrowers or any  Restricted  Subsidiary  or under any  indenture,
agreement  or other  instrument  under  which the same may be  issued,  and such
default  shall  continue  for  a  period  of  time   sufficient  to  permit  the
acceleration  of the  maturity  of any  such  Indebtedness  for  Borrowed  Money
(whether or not such  maturity is in fact  accelerated)  without being waived or
any such  Indebtedness for Borrowed Money shall not be paid when due (whether by
demand, lapse of time, acceleration or otherwise);

            (h) any judgment or judgments,  writ or writs or warrant or warrants
of  attachment,  or any similar  process or processes in an aggregate  amount in
excess of $250,000 and which is not fully covered by insurance  from any insurer
who has acknowledged its liability thereon shall be entered or filed against the
Borrowers or any of the Restricted  Subsidiaries  or against any of the Property
or  assets  of any of them and  remains  undischarged,  unvacated,  unbonded  or
unstayed for a period of thirty days;

            (i) any party  obligated on any Guarantee  shall purport to disavow,
revoke,  repudiate or terminate such Guarantee or such Guarantee shall otherwise
cease to have force or effect;

            (j)   any Change of Control occurs;

            (k) any Borrower,  Guarantor or Restricted Subsidiary shall (i) have
entered  involuntarily  against it an order for relief  under the United  States
Bankruptcy  Code, as amended,  or any analogous  action is taken under any other
applicable  law relating to bankruptcy  or  insolvency,  (ii) not pay,  admit in
writing its inability to pay, or be deemed under  applicable  law not to be able
to pay, its debts generally as they become due, (iii) make an assignment for the
benefit of  creditors,  (iv) apply for,  seek,  consent to, or acquiesce in, the
appointment of a receiver,  administrative receiver,  administrator,  custodian,
trustee, examiner, liquidator or similar official for it or any substantial part
of its Property, (v) institute any proceeding seeking to have entered against it
an order for relief under the United  States  Bankruptcy  Code,  as amended,  to
adjudicate  it  insolvent,  or seeking  dissolution,  winding  up,  liquidation,
reorganization,  arrangement, adjustment or composition of it or its debts under
any law  relating  to  bankruptcy,  insolvency  or  reorganization  or relief of
debtors  or fail to file an  answer  or  other  pleading  denying  the  material
allegations of any such proceeding  filed against it, or (vi) fail to contest in
good faith any appointment or proceeding described in Section 8.1(l) hereof;

            (l) a custodian, receiver,  administrative receiver,  administrator,
trustee,  examiner,  liquidator or similar  official  shall be appointed for any
Borrower,  Guarantor or Restricted  Subsidiary or any substantial part of any of
their  Property,  or a  proceeding  described  in  Section  8.1(k)(v)  shall  be
instituted against any Borrower,  Guarantor or Restricted  Subsidiary,  and such
appointment  continues  undischarged or such proceeding continues undismissed or
unstayed for a period of sixty days.

      Section 8.2.      Non-Bankruptcy  Defaults.  When any  Event of  Default
described in  subsections 8.1(a)  to 8.1(j), both inclusive,  has occurred and
is  continuing,  the Agent  shall,  upon  request of the  Required  Lenders by
notice to the Company, take any or all of the following actions:

            (a)  terminate  the  obligation of the Lenders to extend any further
credit  hereunder  on the date  (which may be the date  thereof)  stated in such
notice; and

            (b)  declare  the  principal  of and  the  accrued  interest  on the
Revolving  Credit  Notes to be  forthwith  due and  payable  and  thereupon  the
Revolving  Credit Notes,  including both  principal and interest,  and all fees,
charges,  commissions  and other  Obligations  payable  hereunder,  shall be and
become immediately due and payable without further demand, presentment,  protest
or notice of any kind.

      Section 8.3. Bankruptcy  Defaults.  When any Event of Default described in
subsection  8.1(k) or 8.1(l) has  occurred  and is  continuing,  then the unpaid
balance of the Revolving  Credit Notes,  including  both principal and interest,
and all fees,  charges,  commissions and other  Obligations  payable  hereunder,
shall immediately become due and payable without presentment, demand, protest or
notice of any kind,  and the  obligation of the Lenders to extend further credit
pursuant to any of the terms hereof shall immediately terminate.

      Section 8.4. Collateral for Undrawn Letters of Credit. If and when (x) any
Event of Default, other than an Event of Default described in subsections (k) or
(l) of Section 8.1, has occurred and is continuing,  the Borrowers  shall,  upon
demand of the Agent,  and (y) any Event of Default  described in subsections (k)
or (l) of Section 8.1 has occurred or (z) any Letter of Credit is outstanding on
the  Termination  Date (whether or not any Event of Default has  occurred),  the
Borrowers shall, without notice or demand from the Agent, immediately pay to the
Agent the full  amount of each  Letter of  Credit,  the  Borrowers  agreeing  to
immediately  make each such  payment and  acknowledging  and  agreeing the Agent
would not have an adequate  remedy at law for failure of the  Borrowers to honor
any such demand and that the Agent shall have the right to require the Borrowers
to specifically  perform such undertaking whether or not any draws had been made
under the Letters of Credit.

SECTION 9.  DEFINITIONS INTERPRETATIONS

      Section 9.1.      Definitions.  The  following  terms  when used  herein
have the following meanings:

      "Activated  Commitments"  shall mean the amounts of the Commitments  which
have been activated pursuant to Section 6.3 hereof.

      "Adjusted  Tangible  Net  Worth"  means,  as of any time the same is to be
determined, the sum of Tangible Net Worth and Subordinated Debt.

      "Affiliate"  means  any  Person  directly  or  indirectly  controlling  or
controlled by, or under direct or indirect common control with,  another Person.
A Person  shall be deemed to control  another  Person for the  purposes  of this
definition  if such  Person  possesses,  directly  or  indirectly,  the power to
direct,  or cause the  direction  of, the  management  and policies of the other
Person,  whether through the ownership of voting  securities,  common directors,
trustees or officers, by contract or otherwise;  provided that, in any event for
purposes of this definition,  any Person that owns, directly or indirectly,  20%
or more of the  securities  having  ordinary  voting  power for the  election of
directors or governing body of a corporation  or 20% or more of the  partnership
or other  ownership  interests  of any  other  Person  (other  than as a limited
partner of such other  Person)  will be deemed to control  such  corporation  or
other Person.

      "Agent" shall mean Harris Trust and Savings Bank and any successor thereto
appointed pursuant to Section 10.1 hereof.

      "Agreement"  means  this  Credit  Agreement,  as the same may be  amended,
modified or restated from time to time in accordance with the terms hereof.

      "Alternative  Currency"  means Canadian  dollars,  pounds sterling and any
other currency (other than United States Dollars) approved as such in writing by
all Lenders in each case only to the extent readily available to each Lender.

      "Applicable  Index Rate" means the  Domestic  Rate or, as to a  particular
Borrower,  any other interest rate index which may have been approved in writing
by the Company, such Borrower and all Lenders.

      "Applicable  Issuer" means the Issuer of Letters of Credit for the account
of a  particular  Borrower  or  Borrowers  or in a  particular  jurisdiction  or
jurisdictions.

      "Applicable  Margin" means two percent per annum provided,  however,  that
(i) if as of the last day of any  calendar  quarter  the  ratio of  Senior  Debt
computed as of such day to EBITDA for the twelve month period then ending is 1.5
to 1 or less or Adjusted  Tangible Net Worth is $150,000,000 or more,  then, and
in any such event,  the Applicable  Margin for the three months  commencing with
the second  month  following  the close of such  calendar  quarter  shall be one
percent  per annum and (ii) if as of the last day of any  calendar  quarter  the
ratio of Senior  Debt  computed  as of such day to EBITDA for the  twelve  month
period  then ending is 2.5 to 1 or less,  but greater  than 1.5 to 1 (and clause
(i) above is inapplicable) then the Applicable Margin for the three month period
commencing  with the second month  following the close of such calendar  quarter
shall be 1.5 percent per annum.

      "Application" is defined in Section 1.3(b).

      "Assignment  Agreement" means an Assignment and Acceptance entered into by
a Lender and an assignee in accordance  with Section 11.18 hereof  substantially
in the form of Exhibit E hereto.

      "Authorized   Representative"  means  the  Chief  Executive  Officer,  the
President, the Chief Financial Officer, the Vice President and Controller or the
Vice  President and Treasurer,  or any further or different  persons so named by
any Authorized Representative in a written notice to the Agent.

      "Borrowers"  means (a) the Company,  (b) DYN and (c) such other Restricted
Subsidiaries  as may from time to time be  designated  as such in writing by the
Company  and  approved as such in writing by all  Lenders  (but  subject to such
conditions  and  limitations  as either the Company or the Lenders may  impose),
with (i) the term  "Borrowers" to mean the Borrowers,  collectively,  and, also,
each individually,  and (ii) all promises and covenants  (including  promises to
pay) and representations and warranties of and by the Borrowers made in the Loan
Documents or any instruments or documents  delivered  pursuant thereto to be and
constitute  the joint  and  several  promises,  covenants,  representations  and
warranties  of and by each and all of such  corporations,  except to the  extent
explicitly  otherwise provided.  The term "Borrower"  appearing in such singular
form shall be deemed a reference to any of the  Borrowers  unless the context in
which such term is used shall otherwise require.

      "Borrowing"  shall  mean the  total  of  Revolving  Loans  made to a given
Borrower by all the Lenders on a single date. Borrowings are made and maintained
ratably from each of the Lenders  according to their  Percentages  except to the
extent otherwise agreed in writing by all Lenders.

      "Borrowing  Base"  means  forty  percent  of the  difference  between  (a)
Eligible  Accounts  Receivable  and (b) amounts  recorded for costs in excess of
billings as an asset which  represents  disputed  items in excess of the amounts
specifically  permitted by the applicable contracts,  other than amounts covered
by  change  orders  properly  executed   pursuant  thereto.   Eligible  Accounts
Receivable  means all ordinary  billed trade accounts  receivable of the Company
and the Restricted Subsidiaries (i) in which the Agent has a valid and perfected
Lien of the priority required by Section 4.1 hereof,  (ii) which are not subject
to any defense,  offset or  counterclaim  which has been claimed (or if they are
subject  to a  defense,  offset  or  counterclaim,  the  amount of same has been
deducted in the computation of Eligible  Accounts  Receivable),  (iii) which are
not  otherwise  in dispute or  anticipated  to be disputed  unless the amount in
question has been deducted in computing Eligible Accounts  Receivable,  and (iv)
which have been  billed and either  have been  outstanding  for not more than 90
days  after  the due date on the  relevant  invoice  (which  due  date  shall be
computed in accord  with the past  practices  of the Company and its  Restricted
Subsidiaries) or payment of same has not been made within 90 days solely because
the amount unpaid  represents  retainage  not due the Company or its  Restricted
Subsidiaries  until  completion of the project in question or  achievement of an
agreed upon  completion  milestone in accord with the custom and practice in the
construction  industry and the Company and its Restricted  Subsidiaries  have no
reason to believe that the amount of such  retainage  will not be paid when due,
provided that there shall be excluded from Eligible Accounts  Receivable (i) any
accounts  receivable  otherwise  included  therein from account  debtors who are
bankrupt  or  insolvent  or  who  have  otherwise  suspended  payment  of  their
obligations  to the Company and its  Restricted  Subsidiaries  in respect to the
contract or job in question or as to which any proceeding (including litigation,
arbitration or mediation) is pending seeking to collect or enforce collection of
same and (ii) unless and until the Consolidation  Date has occurred,  the amount
by which 40% of the difference  between Eligible Accounts  Receivable of DYN and
its Restricted Subsidiaries otherwise included in the Borrowing Base and amounts
related to DYN and its  Restricted  Subsidiaries  described in clause (b) of the
first sentence of this definition exceeds 66-2/3% of Modified Net Worth.

      "Business  Day"  means any day other  than a  Saturday  or Sunday on which
banks are not  authorized or required to close in Chicago,  Illinois and, if the
applicable  Business  Day  relates to a Borrowing  or payment in an  Alternative
Currency or to a conversion of a Credit  Utilization into U.S. Dollars, a day on
which banks and foreign exchange markets are open for business in the city where
disbursements of or payments on such Borrowings are to be made.

      "Canadian Subsidiaries" means JWP NRO Holdings,  Inc., EMCOR Canada Ltd.
and Comstock Canada Ltd.

      "Capital  Expenditures" means, for any period, capital expenditures of the
Company  and its  Restricted  Subsidiaries  during  such  period as defined  and
classified in accordance with GAAP consistently applied.

      "Capital  Lease"  means any lease of Property  (whether  real or personal)
which in accordance with GAAP is required to be capitalized on the balance sheet
of the lessee.

      "Capitalized  Lease Obligation" means the amount of the liability shown on
the  balance  sheet of any Person in respect of a Capital  Lease  determined  in
accordance with GAAP.

      "Change in  Control"  means that (i) more than 25% of the Voting  Stock of
the  Company  shall at any time and for any reason be owned,  either  legally or
beneficially,  by any Person or group of Persons acting in concert or (ii) Frank
MacInnis  shall cease to be the chief  executive  officer of the Company  and/or
Leicle  Chesser  shall  cease to be the chief  financial  officer of the Company
and/or  either such person  shall cease to have the duties and  responsibilities
normally  associated  with such positions and in any instance  covered by clause
(ii) the person in question shall not be replaced  within sixty days by a person
or persons of established  experience and  reputation,  both with respect to the
duties  required  of the  holder of such an office and in the  contracting  or a
related industry,  who has been approved by a majority of the Board of Directors
of the Company and who has not been  affiliated  with any member of the Board or
any business or other enterprise with which a Board member is affiliated.

      "Code"  means the Internal  Revenue Code of 1986,  as amended from time to
time.

      "Collateral" means all Properties,  rights,  interests and privileges from
time to time  subject  to the  Liens  granted  to the  Agent  by the  Collateral
Documents or required so to be by the terms hereof.

      "Collateral  Documents" means all security agreements,  pledge agreements,
assignments,  financing statements, debentures and other documents as shall from
time to time secure the Revolving Credit Notes or any other Obligations.

      "Commitments" is defined in Section 1.1 hereof.

      "Company" is defined in the introductory paragraph.

      "Consolidation  Date" means the date on which the Intercreditor  Agreement
has been  modified in a manner  satisfactory  to the  Required  Lenders so as to
eliminate any restrictions  contained therein on the right of the Agent to fully
enforce  the  Guarantees  from  DYN and its  Restricted  Subsidiaries  upon  the
occurrence of an Event of Default and  eliminating  any undertaking of the Agent
to release or discharge such Guarantee.

      "Controlled Group" means all members of a controlled group of corporations
and all trades or businesses  (whether or not incorporated) under common control
which,  together with the Company or any of its  Subsidiaries,  are treated as a
single employer under Section 414 of the Code.

      "Credit  Utilization"  means any  Borrowing and any issuance of a Letter
of Credit.

      "Default" means any event or condition the occurrence of which would, with
the  passage of time or the giving of notice,  or both,  constitute  an Event of
Default.

      "Designated Foreign Restricted Subsidiaries" means a Restricted Subsidiary
which  conducts  business  primarily  outside of the United  States,  the United
Kingdom and Canada.

      "Domestic  Rate" means a fluctuating  interest rate per annum equal at all
times to the greater of:

            (a) the rate of interest  announced by Harris Trust and Savings Bank
from time to time as its prime  commercial  rate as in effect on such day,  with
any change in such rate resulting from a change in said prime commercial rate to
be  effective  as of the date of the  relevant  change in said prime  commercial
rate; or

            (b)  the sum of (x)  the  rate  determined  by the  Agent  to be the
average (rounded  upwards,  if necessary,  to the next higher 1/100 of 1% of the
rates per annum quoted to the Agent at approximately 10:00 a.m. Chicago time (or
as soon thereafter as is practicable) on the day of  determination  (or, if such
day is not a Business Day, on the immediately  preceding Business Day) by two or
more Federal  funds  brokers  selected by the Agent for the sale to the Agent at
face  value of  Federal  funds in the  secondary  market in an  amount  equal or
comparable  to the  principal  amount owed to the Lenders for which such rate is
being determined, plus (y) 1/2 of 1%.

      "DYN" is defined in the introductory paragraph.

      "Dynalectric  Revolving  Credit  Agreement"  means  the  Revolving  Credit
Agreement dated as of December 14, 1994 by and among DYN,  certain  Subsidiaries
thereof and the lenders party thereto, as amended.

      "EBITDA"  means,  with  reference  to any period,  as  determined  for the
Company and its Restricted  Subsidiaries  on a consolidated  basis in accordance
with GAAP,  Net Income for such period plus all amounts  deducted in arriving at
such Net Income amount in respect of (i) Interest Expense for such period,  plus
(ii) federal,  state, foreign and local income taxes for such period, plus (iii)
all amounts  properly  charged for depreciation of fixed assets and amortization
of  intangible  assets  during  such  period on the books of the Company and its
Restricted Subsidiaries.

      "ERISA"  means the Employee  Retirement  Income  Security Act of 1974,  as
amended from time to time, and any successor statute.

      "ERISA  Affiliate" means any (i) corporation which is a member of the same
controlled  group of  corporations  (within the meaning of Section 414(b) of the
Code) as the Company,  (ii)  partnership or other trade or business  (whether or
not incorporated)  under common control (within the meaning of Section 414(c) of
the Code) with any  Borrower,  and (iii) member of the same  affiliated  service
group  (within the meaning of Section  414(m) of the Code) as the  Company,  any
corporation  described  in  clause  (i)  above  or any  partnership  or trade or
business described in clause (ii) above.

      "Event of Default"  means any event or  condition  specified  as such in
Section 8.1 hereof.

      "Federal  Funds  Rate"  means  the  fluctuating  interest  rate per  annum
described in part (x) of clause (b) of the definition of Domestic Rate.

      "Financial  Letter of  Credit"  means a Letter of Credit  that is not,  as
reasonably determined by the Agent, a Performance Letter of Credit.

      "GAAP" means generally  accepted  accounting  principles as in effect from
time to time, applied by the Company and its Restricted  Subsidiaries on a basis
consistent with the preparation of the Company's  December 31, 1995 consolidated
financial statements furnished to the Lenders.

      "Guarantees"  means  instruments  of guarantee  from the Guarantors of the
Obligations satisfactory in form and substance to the Agent.

      "Guarantors"  means those  corporations  listed on Schedule 4.2 hereto and
such other Restricted Subsidiaries as the Required Lenders may from time to time
designate as Guarantors in a written notice to the Company or as the Company may
from time to time designate.

      "Indebtedness   for  Borrowed   Money"  means  for  any  Person   (without
duplication) all indebtedness created, assumed or incurred in any manner by such
Person or in respect of which such  Person is  directly  or  indirectly  liable,
whether by  guarantee,  commitment  to  purchase,  undertaking  to maintain  the
solvency,  liquidity or a balance sheet  condition of the obligor,  or otherwise
representing (i) money borrowed  (including by the issuance of debt securities),
(ii) indebtedness for the deferred purchase price of property or services (other
than trade accounts  payable arising in the ordinary course of business),  (iii)
indebtedness  secured by any Lien upon  Property of such Person,  whether or not
such  Person has assumed or become  liable for the payment of such  indebtedness
but if such Person is not liable then such indebtedness shall be included at the
lesser of the amount  thereof or the fair market value of the Property  securing
same, (iv) Capitalized  Lease Obligations of such Person and (v) all obligations
of such Person on or with  respect to letters of credit  (other than  letters of
credit which support payment of obligations which do not constitute Indebtedness
for Borrowed Money of any Person),  bankers' acceptances and other extensions of
credit whether or not representing  obligations for borrowed money.  Performance
Guarantees do not constitute Indebtedness for Borrowed Money.

      "Intercreditor  Agreement" means an intercreditor  agreement with Reliance
Surety Company and certain of its Affiliates.

      "Interest  Expense"  means,  with reference to any period,  the sum of all
interest charges (including imputed interest charges with respect to Capitalized
Lease  Obligations  and  all  amortization  of debt  discount  and  expense  but
excluding  fees payable under  Sections 3.1 and 3.2 hereof) and letter of credit
fees and commissions of the Borrowers and the Restricted  Subsidiaries  for such
period  determined  in  accordance  with GAAP,  but  interest  paid  through the
issuance of securities to the holders of the  indebtedness  in question having a
maturity of more than one year from the date of issuance  and being of no higher
ranking or priority than the  indebtedness  in question shall not be included in
Interest Expense nor shall interest accruing but not paid on the promissory note
of the Company dated December 15, 1994 in the principal  amount of $5,464,133.78
and payable to Sellco Corporation be included in Interest Expense.

      "Issuer" means Harris Trust and Savings Bank and any other Lender approved
by the  Required  Lenders and the Company as an issuer of Letters of Credit to a
particular   Borrower  or  Borrowers  hereunder  or  for  use  in  a  particular
jurisdiction.

      "L/C Commitment" means $50,000,000 no more than $40,000,000 of which shall
be in use in the form of Financial  Letters of Credit,  in each case as the same
may be reduced  pursuant  to Section  3.6 hereof and  provided  that (i) the L/C
Commitment  shall never exceed the  Activated  Commitments  as from time to time
outstanding  and (ii) the L/C  Commitment is a part of, and not additive to, the
Activated Commitments.

      "L/C Documents"  means the Letters of Credit,  any draft or other document
presented in connection with a drawing  thereunder,  the  Applications  and this
Agreement.

      "L/C  Obligations"  means  the  aggregate  undrawn  face  amounts  of  all
outstanding Letters of Credit and all unpaid Reimbursement Obligations.

      "Lenders"  shall mean Harris Trust and Savings Bank and all other  lenders
becoming parties hereto pursuant to Section 11.18 hereof.

      "Letter of Credit" is defined in Section 1.3(a).

      "Leverage  Ratio" means, as of any time the same is to be determined,  the
ratio of (x) Senior Debt to (y) the sum of Senior Debt and Adjusted Tangible Net
Worth.

      "Lien" means any mortgage,  lien,  pledge,  charge or security interest of
any  kind  or  nature  (whether  fixed  or  floating  or of  any  ambulatory  or
non-crystallized nature or otherwise) in respect of any Property,  including the
interest of a vendor or lessor  under any  conditional  sale,  Capital  Lease or
other title retention arrangement.

      "Loan Documents" means this Agreement, the Revolving Credit Notes, the L/C
Documents,  the  Guarantees,  the  Intercreditor  Agreement  and the  Collateral
Documents  and each other  instrument  or document to be delivered  hereunder or
thereunder or otherwise in connection therewith.

      "Material  Adverse  Effect"  means,  with respect to any act,  omission or
occurrence,  any of the following consequences in the reasonable judgment of the
Required Lenders:

            (a)   The material  impairment of the ability of the Company or of
the Company       and the Guarantors  taken as a whole to pay or perform their
obligations under or pursuant       to the Loan Documents;
            (b)   Any  material  adverse  change in the  assets,  liabilities,
financial condition,    operations  or business  prospects  of the Company and
its Restricted Subsidiaries taken as      whole, or;
            (c) any  material  impairment  in the right of the  Company  and its
Restricted  Subsidiaries taken as whole to carry on their business substantially
as now conducted.

      "MES Revolving  Credit  Agreement"  means the Revolving  Credit  Agreement
dated as of December 14, 1994 among the Company,  MES Holdings  Corporation  and
the lenders party thereto, as amended.

      "Modified Net Worth" means  Tangible Net Worth  computed on a consolidated
basis for DYN and its  Restricted  Subsidiaries  plus any  amount by which  such
Tangible  Net Worth was reduced as a result of clause (i) of the  definition  of
that term less (or plus in the event the following calculation yields a negative
number)  the  amount  by  which  all  amounts  owing  DYN  and  its   Restricted
Subsidiaries  (other than ordinary trade accounts  payable) from the Company and
its other Restricted Subsidiaries exceeds all amounts owing the Company and such
other Restricted  Subsidiaries (other than ordinary trade accounts payable) from
DYN and  its  Restricted  Subsidiaries.  The  phrase  "ordinary  trade  accounts
payable"  shall  only  include  accounts  payable of the type which the party in
question  customarily incurs to unaffiliated third parties and which are payable
on ordinary industry terms.

      "Net  Income"  for any period  means the net income of the Company and the
Restricted  Subsidiaries  for such period  computed on a  consolidated  basis in
accordance with GAAP and, without  limiting the foregoing,  after deduction from
gross income of all expenses and provisions,  including  provisions for taxes on
or measured by income,  but  excluding  any gains or losses on the sale or other
disposition  of  investments or fixed or capital assets (except that the gain on
the  sale  of  the  Water  Companies  shall  be  included  in Net  Income),  any
extraordinary  gains and losses,  any taxes on such excluded gains,  and any tax
deductions or credits on account of any such excluded losses.

      "Obligations"  shall  mean  any  and  all  indebtedness,  obligations  and
liabilities  of the  Borrowers  and any of them to the Lenders or any of them or
the Agent or Issuers  now or  hereafter  arising  hereunder  or under any of the
other Loan Documents.

      "Percentage"  means,  for each Lender,  the  percentage  of the  Activated
Commitments  represented  by  such  Lender's  Activated  Commitment  or,  if the
Commitments have been terminated,  the percentage held by such Lender (including
through  participation  interests in L/C Obligations) of the aggregate principal
amount of all outstanding Obligations.

      "Performance  Guarantees"  means,  in respect of the Company or any of the
Restricted  Subsidiaries,  contingent  obligations  arising from the issuance of
performance guarantees,  assurances,  indemnities,  bonds, letters of credit, or
similar  agreements  in the  ordinary  course  of  business  in  respect  of the
contracts  (other than  contracts for  Indebtedness  for Borrowed  Money) of the
Company, any Restricted Subsidiary,  any joint venture of which the Company or a
Restricted Subsidiary is a member or Unique Construction Company for the benefit
of surety companies or for the benefit of others to induce such others to forego
the issuance of a surety bond in their favor.

      "Performance  Letters  of  Credit"  means a  Letter  of  Credit  that,  as
reasonably  determined by the Agent,  assures that the applicable  Borrower will
fulfill a contractual non-financial obligation, that is, an obligation that does
not entail the payment of money.

      "Person"  shall mean any  person,  firm,  corporation  partnership,  joint
venture or other entity.

      "Property"  shall  mean,  as to any Person,  all types of real,  personal,
tangible,  intangible  or mixed  property  owned by such  Person  whether or not
included in the most recent  balance  sheet of such Person and its  subsidiaries
under GAAP.

      "Required  Lenders"  shall  mean at any  time  Lenders  whose  Commitments
aggregate  66-2/3%  or  more  of the  total  Commitments  or if at the  time  no
Commitments  are  outstanding,  Lenders holding 66-2/3% or more of the aggregate
outstanding  principal balance of the Revolving Credit Notes and the credit risk
with respect to the Letters of Credit.

      "Restricted  Subsidiaries"  means those Subsidiaries  designated as such
on  Schedule  5.2  hereof  and  all  other  Subsidiaries  becoming  Restricted
Subsidiaries pursuant hereto.  Designated Foreign Restricted  Subsidiaries are
Restricted Subsidiaries.

      "Revolving  Credit Notes" shall mean the Revolving Credit Notes (including
notes issued pursuant to Section 11.18 hereof) and "Revolving Credit Note" shall
mean any of the Revolving Credit Notes.

      "Revolving Loans" is defined in Section 1.2 hereof.

      "Series A Notes" means the Company's 7% Senior  Secured Notes due 1997 and
all "payment in kind" obligations incurred in connection therewith.

      "Series C Indenture"  means the Indenture dated as of December 15, 1994 by
and between the Company,  MES Holdings Corporation and Fleet Bank of Connecticut
(formerly known as Shawmut Bank Connecticut,  N.A.) as amended and modified from
time to time.

      "Series C Notes"  means the 11 percent  Series C Notes of the  Company due
2001 issued  pursuant to the terms of the Series C Indenture  together  with any
"payment in kind" obligations or securities issued pursuant thereto.

      "Senior  Debt" means all  Indebtedness  for Borrowed  Money of the Company
and/or the Restricted Subsidiaries other than Subordinated Debt.

      "Sublimits"  means  (i) the  limitations  placed  upon the  amount  of the
Activated  Commitments  which may be  utilized  by  either  the  Company  or DYN
pursuant to Section 1.4 hereof and (ii) any other  limitations and restrictions,
whether now existing or hereafter arising, placed by the Company and the Lenders
on the portion of the Activated Commitments or of any type of Credit Utilization
thereunder, which may be availed of by a particular Borrower.

      "Subordinated  Debt"  means the Series C Notes and any other  Indebtedness
for Borrowed Money of the Company which is (i) on terms (including  maturity and
interest rate) acceptable to the Required  Lenders and (ii)  subordinated to the
prior  payment in full of the  Obligations  pursuant  to  written  subordination
provisions approved by the Required Lenders.

      "Subsidiary" means, as to any particular parent corporation, (i) any other
corporation at least 51% of the outstanding Voting Stock of which is at the time
directly or indirectly  owned by such parent  corporation  or by any one or more
other  corporations or other entities which are themselves  subsidiaries of such
parent  corporation,  and (ii) any  corporation  organized under the laws of and
conducting  business primarily in a jurisdiction which is not part of the United
States  of  America,   the  United  Kingdom  or  Canada  which  would  meet  the
requirements  of  clause  (i) if at least 51% of its  Voting  Stock was owned as
required by clause (i) and such  ownership  percentage is not less than 39%, the
Company or a Subsidiary  meeting the  requirements  of clause (i) has  effective
control over such  corporation and such entity is accounted for for all purposes
of this Agreement using the equity method of accounting.

      "Tangible Net Worth" means,  as of any time the same is to be  determined,
the  total   shareholders'   equity   (including   capital   stock,   additional
paid-in-capital,  warrants and retained  earnings but after  deducting  treasury
stock and, excluding minority interests in Restricted  Subsidiaries) which would
appear on the  balance  sheet of the  Company  and its  Restricted  Subsidiaries
determined on a consolidated  basis in accordance with GAAP, less the sum of (i)
the  aggregate  book value of all assets which would be classified as intangible
assets under GAAP, including, without limitation, goodwill, patents, trademarks,
trade names,  copyrights,  franchises and deferred charges  (including,  without
limitation,  unamortized  debt  discount  and  expense,  organization  costs and
deferred  research  and  development  expense)  and similar  assets and (ii) the
write-up of assets  above cost,  other than  write-ups  of assets to fair market
value in connection with acquisitions as permitted by GAAP.

      "Termination  Date" means June 19, 1999 or such  earlier date on which the
Commitments  are terminated in whole pursuant to Sections 3.6, 8.2 or 8.3 hereof
or such later date to which the  Commitments  are  extended  pursuant to Section
11.16 hereof.

      "Tranche B Activation  Date",  "Tranche C Activation  Date" and "Tranche D
Activation Date" means, respectively, the date of the relevant activation of the
Commitments pursuant to Section 6.3 hereof.

      "Unrestricted  Subsidiaries" means those Subsidiaries designated as such
on Schedule 5.2 hereof.

      "U.S.  Dollar  Equivalent" means the amount of U.S. Dollars which would be
realized by converting  an  Alternative  Currency into U.S.  Dollars in the spot
market at the exchange  rate quoted by the Agent,  at  approximately  11:00 a.m.
(London time) on the date on which a computation thereof is to be made, to major
banks in the interbank  foreign exchange market for the purchase of U.S. Dollars
for such Alternative Currency.

      "U.S.  Dollars" or "$" means  lawful  currency  of the United  States of
America.

      "Voting Stock" of any Person means capital stock or other equity interests
of any class or  classes  (however  designated)  having  ordinary  power for the
election of directors of such Person, other than stock having such power only by
reason of the happening of a contingency.

      "Water  Companies"  means  Jamaica  Water  Supply  Company and Sea Cliff
Water Company.

      "Welfare  Plan"  means a "welfare  plan" as defined in  Section 3(l)  of
ERISA.

      "Wholly-Owned  Subsidiary"  means a Subsidiary  of which all of the issued
and outstanding shares of capital stock (other than directors' qualifying shares
as required by law) or other equity  interests  are owned by the Company  and/or
one or more wholly-owned subsidiaries within the meaning of this definition.

      Section  9.2.  Interpretation.   The  foregoing  definitions  are  equally
applicable to both the singular and plural forms of the terms defined. The words
"hereof",  "herein",  and "hereunder" and words of like import when used in this
Agreement  shall refer to this  Agreement  as a whole and not to any  particular
provision of this Agreement. All references to time of day herein are references
to Chicago,  Illinois time unless  otherwise  specifically  provided.  Where the
character  or amount of any asset or  liability  or item of income or expense is
required to be determined or any  consolidation or other accounting  computation
is required to be made for the purposes of this  Agreement,  it shall be done in
accordance  with GAAP except where such  principles  are  inconsistent  with the
specific provisions of this Agreement. SECTION 10. THE AGENT AND THE ISSUERS

      Section 10.1.  Appointment and Authorization.  Each Lender hereby appoints
and  authorizes  the Agent to take such  action  as agent on its  behalf  and to
exercise  such  powers  hereunder  and  under the other  Loan  Documents  as are
designated  to the Agent by the terms  hereof  and  thereof  together  with such
powers as are reasonably  incidental thereto.  The Lenders acknowledge and agree
that the Agent and the  Issuers are not a trustee or other  fiduciary  for them.
The Agent or an Issuer may resign at any time by sending  twenty (20) days prior
written  notice to the  Borrowers  and the  Lenders  and may be  removed  by the
Required Lenders upon twenty (20) days prior written notice to the Borrowers and
the  Lenders.  In the event of any such  resignation  or removal,  the  Required
Lenders may appoint a new agent or issuer after  consultation with the Borrowers
(which  nonetheless  shall be bound by the decision of the  Required  Lenders in
their sole discretion), which shall succeed to all the rights, powers and duties
of the Agent or  applicable  Issuer (but only as to Letters of Credit  issued by
the new Issuer)  hereunder and under the other Loan Documents.  Any resigning or
removed  Agent or Issuer shall be entitled to the benefit of all the  protective
provisions hereof with respect to its acts as an agent or issuer hereunder,  but
no successor Agent or Issuer shall in any event be liable or responsible for any
actions of its predecessor.  If the Agent resigns or is removed and no successor
is appointed,  the rights and  obligations of such Agent shall be  automatically
assumed by the Required  Lenders and (i) the Borrowers and  Guarantors  shall be
directed to make all payments due each Lender hereunder  directly to such Lender
and (ii) the  Agent's  rights  in the  Collateral  Documents  shall be  assigned
without  representation,  recourse or warranty to the Lenders as their interests
may appear.

      Section  10.2.  Rights as a Lender.  The  Agent and the  Issuers  have and
reserve all of the rights,  powers and duties hereunder and under the other Loan
Documents  as any Lender may have and may  exercise the same as though they were
not the Agent or an Issuer and the terms  "Lender" or  "Lenders"  as used herein
and in all of such  documents  shall,  unless the  context  otherwise  expressly
indicates,  include  the Agent and  Issuers in their  individual  capacities  as
Lender.

      Section 10.3.  Standard of Care.  The Lenders  acknowledge  that they have
received and approved  copies of the Loan  Documents and such other  information
and documents  concerning the  transactions  contemplated and financed hereby as
they have requested to receive and/or review.  The Agent and the Issuers make no
representations  or  warranties  of any kind or  character  to the Lenders  with
respect to the validity, enforceability,  genuineness,  perfection, value, worth
or  collectibility  hereof or of the Revolving  Credit Notes or any of the other
Obligations  or of any of the other Loan  Documents or of the Liens provided for
thereby  or of any  other  documents  called  for  hereby or  thereby  or of the
Collateral.  The Agent need not verify the worth or existence of the  Collateral
and may rely  exclusively  on reports of the Company in computing  the Borrowing
Base.  Neither the Agent nor the Issuers nor any  director,  officer,  employee,
agent or representative  thereof (including any security trustee therefor) shall
in any  event  be  liable  for  any  clerical  errors  or  errors  in  judgment,
inadvertence  or oversight,  or for action taken or omitted to be taken by it or
them  hereunder or under the other Loan  Documents or in connection  herewith or
therewith  except for its or their own gross  negligence or willful  misconduct.
The Agent and the Issuers  shall incur no liability  under or in respect of this
Agreement or the other Loan  Documents  by acting upon any notice,  certificate,
warranty, instruction or statement (oral or written) of anyone (including anyone
in good  faith  believed  by  them  to be  authorized  to act on  behalf  of any
Borrower),  unless they have actual knowledge of the untruthfulness of same. The
Agent and the Issuers may execute any of their  duties  hereunder  by or through
employees,  agents,  and  attorneys-in-fact  and shall not be  answerable to the
Lenders for the default or  misconduct  of any such agents or  attorneys-in-fact
selected with  reasonable  care.  The Agent and the Issuers shall be entitled to
advice of counsel  concerning  all matters  pertaining  to the  agencies  hereby
created and their duties  hereunder,  and shall incur no liability to anyone and
be fully protected in acting upon the advice of such counsel.  The Agent and the
Issuers  shall be entitled to assume that no Default or Event of Default  exists
unless notified to the contrary by a Lender.  The Agent and the Issuers shall in
all events be fully  protected  in acting or  failing to act in accord  with the
instructions of the Required Lenders. Upon the occurrence of an Event of Default
hereunder,  the Agent shall take such action with respect to the  enforcement of
the Liens on the Collateral and the  preservation  and protection  thereof as it
shall be  directed  to take by the  Required  Lenders  but  unless and until the
Required  Lenders have given such direction the Agent shall take or refrain from
taking such actions as it deems  appropriate  and in the best of interest of all
Lenders.  The Agent shall in all cases be fully justified in failing or refusing
to act  hereunder  and  under  the  other  Loan  Documents  unless  it  shall be
indemnified to its satisfaction by the Lenders against any and all liability and
expense  which may be incurred by the Agent by reason of taking or continuing to
take any such action. The Agent may treat the owner of any Revolving Credit Note
as the holder  thereof  until written  notice of transfer  shall have been filed
with the Agent  signed by such owner in form  satisfactory  to the  Agent.  Each
Lender acknowledges that it has independently and without reliance on the Agent,
the Issuers or any other Lender and based upon such information,  investigations
and inquiries as it deems  appropriate made its own credit analysis and decision
to extend credit to the Borrowers. It shall be the responsibility of each Lender
to keep itself  informed as to the  creditworthiness  of the  Borrowers  and the
Guarantors  and the Agent and Issuers shall have no liability to any Lender with
respect thereto.

      Section  10.4.  Costs and  Expenses.  Each Lender  agrees to reimburse the
Agent and the Issuers for all costs and expenses suffered or incurred by them or
any security  trustee in performing  their duties  hereunder and under the other
Loan  Documents,  or in the exercise of any right or power  imposed or conferred
upon them hereby or thereby, to the extent that they are not promptly reimbursed
for same by the Borrowers or out of the Collateral,  all such costs and expenses
to be borne by the  Lenders  ratably  in  accordance  with the  amounts of their
respective Commitments.  If any Lender fails to reimburse the Agent or an Issuer
for its share of any such costs and expenses,  such costs and expenses  shall be
paid pro rata by the remaining Lenders,  but without in any manner releasing the
defaulting Lender from its liability hereunder.

      Section 10.5. Indemnity.  The Lenders shall ratably indemnify and hold the
Agent,  the  Issuers  and  their   directors,   officers,   employees,   agents,
representatives  or  attorneys-in-fact  (including as such any security  trustee
therefor), harmless from and against any liabilities,  losses, costs or expenses
suffered or incurred by them  hereunder or under the other Loan  Documents or in
connection with the transactions  contemplated hereby or thereby,  regardless of
when asserted or arising,  except to the extent they are promptly reimbursed for
the same by the Borrowers or out of the Collateral and except to the extent that
any event giving rise to a claim was caused by the gross  negligence  or willful
misconduct of the party seeking to be indemnified. If any Lender defaults in its
obligations  hereunder,  its share of the obligations  shall be paid pro rata by
the remaining Lenders, but without in any manner releasing the defaulting Lender
from its liability hereunder.

      Section 10.6.     Conflict.  In the  event  of a  conflict  between  the
provisions of this  Section 10 and the  provisions of any Collateral  Document
regarding the rights,  duties and obligations of the Agent,  the provisions of
this Section 10 shall govern.

SECTION 11. MISCELLANEOUS.

      Section 11.1. Withholding Taxes. (a) Payments Free of Withholding.  Except
as otherwise required by law and subject to Section 11.1(b) hereof, each payment
by each  Borrower  and each  Guarantor  under this  Agreement  or the other Loan
Documents shall be made without  withholding for or on account of any present or
future taxes (other than overall net income taxes (but not  withholdings) on the
recipient imposed by a jurisdiction  where it is domiciled or has an established
place of business)  imposed by or within the jurisdiction in which such Borrower
or such  Guarantor is domiciled,  any  jurisdiction  from which such Borrower or
such Guarantor makes any payment, or (in each case) any political subdivision or
taxing authority thereof or therein. If any such withholding is so required, the
Borrower  or  relevant  Guarantor  shall  make the  withholding,  pay the amount
withheld to the  appropriate  governmental  authority  before  penalties  attach
thereto or interest accrues thereon and forthwith pay such additional  amount as
may be necessary to ensure that the net amount actually  received by each Lender
and the  Agent  free  and  clear of such  taxes  (including  such  taxes on such
additional amount) is equal to the amount which that Lender or the Agent (as the
case may be) would have  received  had such  withholding  not been made.  If the
Agent or any Lender pays any amount in respect of any such taxes,  penalties  or
interest the Borrowers shall reimburse the Agent or that Lender for that payment
on demand in the  currency in which such payment was made.  If the  Borrowers or
any  Guarantor  pay any such taxes,  penalties or interest,  they shall  deliver
official tax receipts evidencing that payment or certified copies thereof to the
Lender or Agent on whose account such  withholding  was made (with a copy to the
Agent if not the recipient of the original) on or before the thirtieth day after
payment. If any Lender or the Agent determines it has received or been granted a
credit  against or relief or remission  for, or repayment  of, any taxes paid or
payable by it because of any taxes,  penalties or interest paid by the Borrowers
or any  Guarantor  and  evidenced  by such a tax  receipt,  such Lender or Agent
shall,  to the extent it can do so without  prejudice  to the  retention  of the
amount of such credit, relief,  remission or repayment,  pay to the Borrowers or
such  Guarantor as  applicable,  such amount as such Lender or Agent  reasonably
determines is attributable to such deduction or withholding and which will leave
such Lender or Agent (after such payment) in no better or worse position than it
would have been in if the Borrowers or Guarantors  had not been required to make
such deduction or  withholding.  Nothing in this Agreement  shall interfere with
the right of each  Lender and the Agent to arrange  its tax  affairs in whatever
manner  it thinks  fit nor  oblige  any  Lender  or the  Agent to  disclose  any
information  relating to its tax affairs or any  computations in connection with
such taxes.

            (b) U.S.  Withholding  Tax  Exemptions.  Each  Lender  that is not a
United  States  person (as such term is defined  in Section  7701(a)(30)  of the
Code) shall  submit to the  Borrowers  and the Agent on or before the earlier of
the date the initial  Borrowing is made hereunder and thirty (30) days after the
date hereof,  two duly completed and signed copies of either Form 1001 (relating
to such Lender and entitling it to a complete  exemption from withholding  under
the Code on all amounts to be received by such Lender,  including fees, pursuant
to the Loan  Documents  and the Revolving  Loans) or Form 4224  (relating to all
amounts to be  received by such  Lender,  including  fees,  pursuant to the Loan
Documents  and the  Revolving  Loans)  of the  United  States  Internal  Revenue
Service.  Thereafter  and from time to time,  each  Lender  shall  submit to the
Borrowers and the Agent such  additional duly completed and signed copies of one
or the other of such Forms (or such  successor  forms as shall be  adopted  from
time to time by the relevant  United  States taxing  authorities)  as may be (i)
requested by the Company in a written  notice,  directly  othrough the Agent, to
such  Lender  and  (ii)  required  under  then-current   United  States  law  or
regulations  to avoid or reduce United States  withholding  taxes on payments in
respect of all amounts to be received by such Lender,  including fees,  pursuant
to the Loan Documents or the Revolving Loans.

            (c) Inability of Lender to Submit Forms.  If any Lender  determines,
as a result of any change in applicable  law,  regulation  or treaty,  or in any
official application or interpretation  thereof,  that it is unable to submit to
the Borrowers or Agent any form or certificate  that such Lender is obligated to
submit  pursuant to subsection  (b) of this Section 11.1. or that such Lender is
required to withdraw or cancel any such form or certificate previously submitted
or any such form or  certificate  otherwise  becomes  ineffective or inaccurate,
such Lender shall promptly notify the Company and the Agent of such fact and the
Lender  shall to that  extent  not be  obligated  to  provide  any such  form or
certificate  and will be entitled to  withdraw  or cancel any  affected  form or
certificate,  as  applicable.  If any  Lender  can avoid the  effect of any such
change in law,  regulation  or treaty or in the  application  or  interpretation
thereof,  whether by changing its lending office or otherwise,  it undertakes to
do so if the same can be accomplished  without  disadvantage to it. If some, but
not all, of the Lenders are affected by a change of the type  described  herein,
such  Lender  agrees  that it will at the  request  of the  Company  assign  its
Obligations  to another Lender under and pursuant to the conditions set forth in
Section 11.18 hereof.

      Section 11.2. Holidays.  If any payment of principal or interest on any of
the Revolving  Credit Notes or any fees shall fall due on a Saturday,  Sunday or
on another day which is a legal  holiday for lenders in the States of  Illinois,
(i) interest at the rates such Notes bear for the period prior to maturity shall
continue  to accrue on such  principal  from the stated due date  thereof to and
including the next succeeding Business Day and (ii) such principal, interest and
fees shall be payable on such succeeding Business Day.

      Section 11.3. No Waiver,  Cumulative Remedies.  No delay or failure on the
part of the Agent,  any  Issuer or any  Lender or on the part of the Agent,  any
Issuer or any holder of any of the  Obligations  in the exercise of any power or
right shall operate as a waiver  thereof,  nor as an acquiescence in any default
nor shall any  single or partial  exercise  of any power or right  preclude  any
other or further  exercise of any other power or right.  The rights and remedies
hereunder of the Agent,  the  Issuers,  Lenders and of the holders of any of the
Obligations  are  cumulative  to, and not  exclusive  of, any rights or remedies
which any of them would otherwise have.

      Section 11.4. Waivers,  Modifications and Amendments. Any provision hereof
or of any of the  other  Loan  Documents  may be  amended,  modified,  waived or
released  and any  Default  or  Event of  Default  and its  consequences  may be
rescinded  and  annulled  upon the  written  consent  of the  Required  Lenders;
provided,  however,  that  without  the  written  consent of each Lender no such
amendment,  modification or waiver shall increase the amount or extend the terms
of any Lender's  Commitment or reduce the interest rate  applicable to or extend
the maturity of its Revolving Credit Note or reduce the amount of the principal,
interest, fees or other amounts to which it is entitled hereunder or release any
guaranty of any Obligations  (except for the releases and discharges required by
the  Intercreditor  Agreement) or release all or any substantial (in value) part
of the  collateral  security  afforded by the  Collateral  Documents  (except in
connection with a sale or other disposition  thereof or as otherwise provided in
the  Collateral  Documents)  or change this Section or change the  definition of
"Required  Lenders" or change the number of Lenders  required to take any action
hereunder or under any of the other Loan Documents.  No amendment,  modification
or waiver of the Agents' or Issuer's  protective  provisions  shall be effective
without the prior written consent of the Agent and the Issuers.

      Section 11.5. Costs and Expenses. The Borrowers agree to pay on demand all
reasonable  costs and expenses of the Agent in connection with the  negotiation,
preparation,  execution,  delivery,  recording  or filing or release of the Loan
Documents or in connection with any consents  hereunder or thereunder or waivers
or amendments  hereto or thereto or assignments  pursuant hereto,  including the
reasonable fees and expenses of counsel for the Agent with respect to all of the
foregoing,  and all recording,  filing, insurance or other fees, costs and taxes
incident to  perfecting a Lien upon the  collateral  security for the  Revolving
Credit Notes and the other  Obligations,  and all reasonable  costs and expenses
(including  reasonable  attorneys' fees) incurred by the Agent, the Issuers, the
Lenders or any other holders of the  Obligations in connection  with any Default
or Event of Default or in connection with the enforcement of the Loan Documents,
and all reasonable  costs, fees and taxes of the types enumerated above incurred
in  supplementing  (and  recording  or  filing  supplements  to) the  Collateral
Documents in connection with assignments contemplated by Section 11.18 hereof if
counsel to the Agent  believes such  supplements to be appropriate or desirable.
The Borrowers  agree to indemnify and save the Lenders,  the Issuers,  the Agent
and any security  trustee for the Agent or the Lenders harmless from any and all
liabilities,  losses, costs and expenses incurred by the Lenders, the Issuers or
the Agent in connection with any action,  suit or proceeding brought against the
Agent or the  Issuers,  any  security  trustee or any Lender by any Person which
arises  out of the  transactions  contemplated  or  financed  by any of the Loan
Documents or out of any action or inaction by the Agent, any security trustee or
any  Lender  thereunder,  except  for such  thereof  as is  caused  by the gross
negligence or willful  misconduct of the party  seeking to be  indemnified.  The
provisions  of this  Section  11.5 and the  protective  provisions  of Section 2
hereof shall survive payment of the Obligations.

      Section  11.6.  Stamp Taxes.  The  Borrowers  agree that they will pay any
documentary,  stamp or similar taxes payable in respect to this Agreement or any
other Loan Document,  including  interest and  penalties,  in the event any such
taxes are assessed,  irrespective of when such assessment is made and whether or
not any credit to it is then in use or available.

      Section  11.7.   Survival  of   Representations   and   Indemnities.   All
representations and warranties made herein or any of the other Loan Documents or
in certificates given pursuant hereto or thereto shall survive the execution and
delivery of this Agreement and the other Loan  Documents,  and shall continue in
full  force and  effect  with  respect to the date as of which they were made as
long as any credit is in use or available  hereunder.  All indemnities and other
provisions  relative to  reimbursement to the Agent, the Issuers and the Lenders
of amounts  sufficient  to protect  the yield of the Agent,  the Issuers and the
Lenders  with  respect to the Loans and  Letters of Credit,  shall  survive  the
termination of this Agreement and the payment of the Obligations.

      Section 11.8. Construction.  The parties hereto acknowledge and agree that
this  Agreement  shall not be construed  more favorably in favor of one than the
other based upon which party  drafted the same, it being  acknowledged  that all
parties hereto  contributed  substantially to the negotiation and preparation of
this Agreement.

      Section  11.9.  Addresses  for  Notices.   Unless  specifically   provided
otherwise hereunder,  all communications provided for herein shall be in writing
and shall be deemed to have been given or made when served  personally  or three
days after  being  deposited  in the United  States  mail  addressed,  if to any
Borrower,  in each case to such  Borrower  in care of the Company at 101 Merritt
Seven Corporate Park,  Norwalk,  Connecticut 06851,  Attention:  Chairman of the
Board and  President,  and if to the Lenders at their  addresses as shown on the
signature pages hereof or on any Assignment Agreement,  or at such other address
as shall be  designated  by any party  hereto in a written  notice given to each
party pursuant to this Section 11.9.

      Section  11.10.  Obligations  Several.  The  obligations  of  the  Lenders
hereunder are several and not joint.  Nothing contained in this Agreement and no
action taken by the Lenders  pursuant  hereto shall be deemed to constitute  the
Lenders a partnership, association, joint venture or other entity.

      Section 11.11.    Headings.  Article and Section  headings  used in this
Agreement  are for  convenience  of reference  only and are not a part of this
Agreement for any other purpose.

      Section 11.12. Severability of Provisions. Any provision of this Agreement
which is unenforceable in any jurisdiction  shall, as to such  jurisdiction,  be
ineffective  to the extent of such  unenforceability  without  invalidating  the
remaining  provisions hereof or affecting the validity or enforceability of such
provision in any other jurisdiction. All rights, remedies and powers provided in
this Agreement and other Loan Documents may be exercised only to the extent that
the exercise  thereof does not violate any  applicable  mandatory  provisions of
law, and all the  provisions  of this  Agreement  and other Loan  Documents  are
intended to be subject to all applicable  mandatory  provisions of law which may
be controlling  and to be limited to the extent  necessary so that they will not
render this Agreement or other Loan Documents invalid or unenforceable.

      Section 11.13.    Counterparts.  This  Agreement  may be executed in any
number  of  counterparts,   and  by  different   parties  hereto  on  separate
counterparts,  and all such  counterparts  taken  together  shall be deemed to
constitute one and the same instrument.

      Section 11.14.  Binding Nature and Governing Law. This Agreement  shall be
binding upon the Borrowers and their successors and assigns,  and shall inure to
the  benefit of the Lenders and the  benefit of their  successors  and  assigns,
including any  subsequent  holder of an interest of the Revolving  Credit Notes.
This  Agreement  and the  rights  and  duties  of the  parties  hereto  shall be
construed  and  determined  in  accordance  with,  and shall be  governed by the
internal laws of the State of Illinois without regard to principles of conflicts
of law. No Borrower may assign its rights hereunder  without the written consent
of the Lenders.

      Section 11.15.  Entire  Understanding.  This Agreement,  together with the
other Loan  Documents  and any  agreements  between  the  Company  and the Agent
concerning fees, constitute the entire understanding of the parties with respect
to the subject matter hereof and any prior agreements,  whether written or oral,
with respect thereto are superseded hereby.

      Section  11.16.  Extensions of the  Commitments.  Not less than 60 days or
more than 120 days prior to the then  effective  Termination  Date,  the Company
(acting on behalf of the  Borrowers  pursuant  to Section 1.6 hereof) may advise
the  Agent in  writing  of its  desire  to extend  the  Termination  Date for an
additional 12 months (but not beyond June 19, 2001) and the Agent shall promptly
notify the Lenders of each such request; provided not more than one such request
for the extension of the Termination  Date may be made in any one calendar year.
In the  event  that the  Lenders  are  agreeable  to such  extension  (it  being
understood  that any Lender  may  accept or  decline  such a request in its sole
discretion and on any terms such Lender may elect), the Borrowers,  the Lenders,
the  Guarantors  and the Agent shall enter into such  documents as the Agent may
reasonably deem necessary or appropriate to reflect such extension and to assure
that all  extensions of credit  pursuant to the  Commitments  as so extended are
secured  by  the  Liens  of  the  Collateral  Documents  and  guaranteed  by the
Guarantees, all costs and expenses incurred by the Agent in connection therewith
to be paid by the Borrowers.

      Section 11.17. Participations.  Any Lender may grant participations in its
extensions  of  credit   hereunder  to  any  other   financial   institution  (a
"Participant") provided that (i) no Participant shall thereby acquire any direct
rights under this  Agreement,  (ii) no Lender shall agree with a Participant not
to exercise any of its rights hereunder  without the consent of such Participant
except for rights  which  under the terms  hereof may only be  exercised  by all
Lenders,  (iii) no sale of a participation  in extensions of credit shall in any
manner  relieve the selling  Lender of its  obligations  hereunder  and (iv) the
Borrowers  shall not be  responsible  for the costs  incurred  by any  Lender in
connection with such participations.

      Section 11.18.  Assignment Agreements.  Each Lender may, from time to time
upon at least five Business Days' notice to the Agent, assign to other financial
institutions  all or part of its rights  and  obligations  under this  Agreement
(including without limitation the indebtedness evidenced by the Revolving Credit
Notes  then  owned  by  such  assigning  Lender,  together  with  an  equivalent
proportion of its obligation to make Revolving  Loans and participate in Letters
of Credit hereunder)  pursuant to an Assignment  Agreement;  provided,  however,
that  (i)  each  such  assignment  shall be of a  constant,  and not a  varying,
percentage of the assigning Lender's rights and obligations under this Agreement
and the assignment shall cover the same percentage of such Lender's  Commitment,
Revolving Loans,  Revolving Credit Note and interests in Letters of Credit; (ii)
unless the Agent otherwise  consents,  the assigning  Lender shall assign all of
its  Commitment,  Revolving  Loans,  Revolving  Credit Note and interests in the
Letters of Credit or the aggregate  amount  thereof being  assigned  pursuant to
each  such  assignment  (determined  as of the  effective  date of the  relevant
Assignment  Agreement)  shall be an amount  which shall in no event be less than
$5,000,000 and shall be an integral multiple of $1,000,000;  (iii) the Agent and
the  Company  (which is acting on its own behalf  and  pursuant  to Section  1.6
hereof on behalf of the  Borrowers  as well) must each  consent,  which  consent
shall not be unreasonably  withheld  (provided that the Company may withhold its
consent to an  assignment  by the Agent in its sole  discretion  if after giving
effect thereto the Agent would have an Activated  Commitment,  computed prior to
giving effect to any reductions or terminations of the Activated Commitments, of
less than  $25,000,000)  and shall be evidenced by execution of a counterpart of
the  relevant  Assignment  Agreement  in the  space  provided  thereon  for such
acceptance,  to each  such  assignment  to a  party  which  was not an  original
signatory of this Agreement and (v) the assigning Lender (other than the Lenders
party  hereto  as of the date  hereof)  must pay to the Agent a  processing  and
recordation fee of $3,000.  Upon the execution of each  Assignment  Agreement by
the assigning Lender thereunder, the assignee lender thereunder, the Company and
the Agent and payment to such  assigning  Lender by such assignee  lender of the
purchase  price for the  portion  of the  indebtedness  of the  Borrowers  being
acquired by it, (i) such assignee lender shall  thereupon  become a "Lender" for
all purposes of this Agreement with a Commitment in the amount set forth in such
Assignment Agreement and with all the rights,  powers and obligations afforded a
Lender hereunder, (ii) such assigning Lender shall have no further liability for
funding the portion of its Commitment assumed by such other Lender and (iii) the
address  for  notices  to such  assignee  Lender  shall be as  specified  in the
Assignment  Agreement  executed  by it.  Concurrently  with  the  execution  and
delivery of such  Assignment  Agreement,  the  Borrowers  shall each execute and
deliver a Revolving  Credit Note to the  assignee  Lender,  (all such  Revolving
Credit Notes to constitute "Revolving Credit Notes" for all purposes of the Loan
Documents)  and if the  assignment  is of the full  Commitment  of the assigning
Lender,  the assignor Lender shall thereupon  return the Revolving  Credit Notes
theretofore  issued to it to the Company marked "canceled." If an assignor is an
Issuer  its  rights  and  obligations  as  Issuer  shall  be  unaffected  by any
assignment.

      Section  11.19.  Terms of  Collateral  Documents not  Superseded.  Nothing
contained  herein  shall be deemed or  construed  to permit any act or  omission
which is prohibited by the terms of any Collateral  Document,  the covenants and
agreements contained herein being in addition to and not in substitution for the
covenants and agreements contained in the Collateral Documents.


<PAGE>




      Section 11.20.    PERSONAL JURISDICTION and Jury Trial Waives.

      (a)  EXCLUSIVE  JURISDICTION.  EXCEPT AS PROVIDED IN  SUBSECTION  (b), the
AGENT,  THE LENDERS AND THE BORROWERS AGREE THAT ALL DISPUTES AMONG THEM ARISING
OUT  OF,  CONNECTED  WITH,   RELATED  TO,  OR  INCIDENTAL  TO  THE  RELATIONSHIP
ESTABLISHED AMONG THEM IN CONNECTION WITH THIS AGREEMENT, AND WHETHER ARISING IN
CONTRACT,  TORT,  EQUITY,  OR OTHERWISE,  SHALL BE RESOLVED ONLY BY (AND EACH OF
THEM  FOR  THE  BENEFIT  OF  THE  OTHERS  HEREBY  IRREVOCABLY   SUBMITS  TO  THE
JURISDICTION  OF) THE STATE OR FEDERAL COURTS LOCATED IN COOK COUNTY,  Illinois,
BUT EACH OF THE  AGENT,  THE  LENDERS  AND THE  BORROWERS  ACKNOWLEDGE  THAT ANY
APPEALS  FROM THOSE  COURTS MAY HAVE TO BE HEARD BY A COURT  LOCATED  OUTSIDE OF
COOK COUNTY,  ILLINOIS.  THE BORROWERS  WAIVE IN ALL DISPUTES ANY OBJECTION THAT
THEY MAY HAVE TO THE LOCATION OF THE COURT CONSIDERING THE DISPUTE.

      (b) OTHER  JURISDICTIONS.  THE BORROWERS AGREE THAT THE AGENT, AND each OF
THE  LENDERS  SHALL HAVE THE RIGHT TO PROCEED  AGAINST  THE  BORROWERS  OR THEIR
PROPERTY  ("PROPERTY")  IN A COURT IN ANY LOCATION OR JURISDICTION TO ENABLE THE
AGENT OR ANY LENDER TO REALIZE ON  PROPERTY,  OR TO ENFORCE A JUDGMENT  OR OTHER
COURT ORDER ENTERED IN FAVOR OF THE AGENT OR ANY LENDER AND,  WITHOUT  PREJUDICE
TO THE GENERALITY OF THE FOREGOING,  EACH BORROWER  AGREES THAT THE AGENT OR ANY
LENDER  SHALL BE ENTITLED TO COMMENCE  PROCEEDINGS  (WHETHER  FOR THE PURPOSE OF
OBTAINING OR  ENFORCING  ANY ORDER OR JUDGMENT OR  OTHERWISE  HOWSOEVER)  IN THE
COURTS OF THE  JURISDICTIONS  WHERE  SUCH  BORROWER  OR ANY OF ITS  PROPERTY  IS
LOCATED.

      (c)   Jury Trial  Waiver.  The  Borrowers,  the Agent,  and each  Lender
hereby  irrevocably  waives  any and all  right to  trial  by jury in any  legal
proceeding  arising out of or relating to any Loan Document or the  transactions
contemplated thereby.

      Section 11.21. Currency.  Each reference in this Agreement to U.S. Dollars
or to an Alternative  Currency (the "relevant  currency") is of the essence.  To
the fullest extent  permitted by law, the obligation of each Borrower in respect
of any amount due in the  relevant  currency  under  this  Agreement  or the L/C
Documents  shall,  notwithstanding  any payment in any other  currency  (whether
pursuant to a judgment or  otherwise),  be discharged  only to the extent of the
amount in the relevant  currency  that the Agent,  Issuer or Lender  entitled to
receive such payment may, in accordance with normal banking procedures, purchase
with the sum  paid in such  other  currency  (after  any  premium  and  costs of
exchange) on the Business Day immediately  following the day on which such party
receives such payment.  If the amount in the relevant  currency so purchased for
any reason falls short of the amount  originally  due in the relevant  currency,
the Borrowers shall pay such additional  amounts,  in the relevant currency,  as
may be  necessary  to  compensate  for the  shortfall.  Any  obligations  of the
Borrowers not discharged by such payment shall, to the fullest extent  permitted
by applicable  law, be due as a separate and  independent  obligation and, until
discharged as provided herein, shall continue in full force and effect.

      Section  11.22.  Currency  Equivalence.  If for the  purposes of obtaining
judgment in any court it is  necessary to convert a sum due from any Borrower on
the  Obligations  in  the  currency  expressed  to be  payable  herein  or in an
Application or under the Revolving Credit Notes (the "specified  currency") into
another currency, the parties agree that the rate of exchange used shall be that
at which in accordance  with normal banking  procedures the Agent could purchase
the specified  currency  with such other  currency on the Business Day preceding
that on which  final  judgment  is given.  The  obligation  of each  Borrower in
respect  of any such sum due to the  Agent,  any  Issuer  or any  Lender  on the
Obligations  shall,  notwithstanding  any judgment in a currency  other than the
specified  currency,  be discharged  only to the extent that on the Business Day
following receipt by the Agent,  such Issuer or such Lender,  as applicable,  of
any sum adjudged to be so due in such other currency, the Agent, such Issuers or
such Lender,  as applicable,  may in accordance  with normal banking  procedures
purchase the specified  currency with such other currency.  If the amount of the
specified  currency  so  purchased  is less than the sum  originally  due to the
Agent,  such Issuers or such Lender in the  specified  currency,  the  Borrowers
agree,  as a separate  obligation  and  notwithstanding  any such  judgment,  to
indemnify the Agent,  such Issuers or such Lender,  as the case may be,  against
such loss, and if the amount of the specified  currency so purchased exceeds the
amount  originally due to the Agent, such Issuer or such Lender in the specified
currency,  the Agent,  such Issuer or such Lender, as the case may be, agrees to
remit such excess to the Borrowers.

      Section 11.23. One Lender. If and so long as Harris Trust and Savings Bank
is the only Lender  hereunder,  Harris Trust and Savings Bank shall have all the
rights,  powers and  privileges  afforded the Agent,  the Lenders,  the Required
Lenders and the Issuers hereunder and under the other Loan Agreements.


<PAGE>



      Upon your  acceptance  hereof in the manner  hereinafter  set forth,  this
Agreement shall be a contract between us for the purposes hereinabove set forth.

                   Dated as of this 19th day of June, 1996.
                                                EMCOR GROUP, INC.

                                                By:  /s/ Frank T. MacInnis


Its:________________________

                                                DYN SPECIALTY CONTRACTING INC.

                                                By:  /s/ Jeffrey M. Levy


Its:________________________





<PAGE>



      Accepted  and Agreed to at  Chicago,  Illinois as of the day and year last
above written.

      Each of the Lenders hereby agrees with each other Lender that if it should
receive or obtain any payment (whether by voluntary payment, by realization upon
collateral,   by  the  exercise  of  rights  of  setoff  or  banker's  lien,  by
counterclaim  or cross  action,  or by the  enforcement  of any rights under the
Credit  Agreement,  the Revolving  Credit Notes or the  Collateral  Documents or
otherwise) in respect of the  Obligations,  in a greater amount than such Lender
would have received had such payment been made to the Agent and been distributed
among the Lenders as contemplated by Section 3.7 hereof,  then in that event the
Lender receiving such  disproportionate  payment shall purchase for cash without
recourse  from the other  Lenders an  interest in the  Obligations  owed to such
Lenders in such  amount as shall  result in a  distribution  of such  payment as
contemplated  by Section 3.7 hereof.  In the event any payment  made to a Lender
and shared  with the other  Lenders  pursuant to the  provisions  hereof is ever
recovered  from such  Lender,  the Lenders  receiving a portion of such  payment
hereunder  shall  restore  the same to the payor  Lender,  with  interest to the
extent payable by the payor. In the event any amount paid to an Issuer under the
Applications  shall  ever be  recovered  from such  Issuer,  each  Lender  shall
reimburse  such  Issuer for its pro rata share of the amount so  recovered  with
interest  to the  extent  payable  by  the  Issuer.  Amount  and  Percentage  of
Commitment:

                                          HARRIS TRUST AND SAVINGS BANK
$100,000,000.00
(100.0%)
                                          By:  /s/ Wes W. Frangul
                                                 Vice President

                                          111 West Monroe Street
                                          Chicago, Illinois  60690
                                          Attention:  Wes Frangul




<PAGE>





                                  Exhibit A

                            Revolving Credit Note

                                                       _________________, 1996

      For   value   received,   the   undersigned,    _____________________,   a
________________  corporation ("Borrower"),  hereby promises to pay to the order
of   _______________________________________________   (the   "Lender")  on  the
Termination Date of the hereinafter  defined Credit Agreement,  at the principal
office of Harris Trust and Savings Bank in Chicago, Illinois, in the currency of
each Loan evidenced hereby in accordance with Section 1 of the Credit Agreement,
the aggregate  unpaid principal amount of all Revolving Loans made by the Lender
to the Borrower pursuant to the Credit Agreement,  together with interest on the
principal amount of each Revolving Loan from time to time outstanding  hereunder
at the rates, and payable in the manner and on the dates specified in the Credit
Agreement.

      The Lender shall record on its books or records or on a schedule  attached
to this Note, which is a part hereof, each Revolving Loan made by it pursuant to
the Credit Agreement,  any repayment of principal and interest and the principal
balances from time to time outstanding  hereon,  and the currency in which made,
provided  that  prior to the  transfer  of this Note all such  amounts  shall be
recorded on a schedule attached to this Note. The record thereof,  whether shown
on such books or records or on a  schedule  to this Note,  shall be prima  facie
evidence  of the same,  provided,  however,  that the  failure  of the Lender to
record any of the  foregoing  or any error in any such record shall not limit or
otherwise  affect the  obligation of the Borrowers to repay all Revolving  Loans
made to them pursuant to the Credit  Agreement  together  with accrued  interest
thereon.

      This Note is one of the Revolving  Credit Notes  referred to in the Credit
Agreement  dated as of June 19,  1996,  among the  Borrowers,  Harris  Trust and
Savings  Bank,  as Agent,  and the Lenders from time to time party  thereto (the
"Credit Agreement"), and this Note and the holder hereof are entitled to all the
benefits provided for thereby or referred to therein,  to which Credit Agreement
reference is hereby made for a statement thereof. All defined terms used in this
Note, except terms otherwise  defined herein,  shall have the same meaning as in
the Credit Agreement.

      This Note is issued by the Borrower  under the terms and provisions of the
Credit Agreement and is secured by the Collateral  Documents,  and this Note and
the holder hereof are entitled to all of the benefits and security  provided for
thereby  or  referred  to  therein,  to which  reference  is  hereby  made for a
statement thereof.  This Note may be declared to be, or be and become, due prior
to its expressed maturity, voluntary prepayments may be made hereon, and certain
prepayments are required to be made hereon,  all in the events, on the terms and
with the effects provided in the Credit Agreement.

      This Note shall be  construed  in  accordance  with,  and governed by, the
internal laws of the State of Illinois without regard to principles of conflicts
of law.

      The  Borrower  hereby  promises to pay all costs and  expenses  (including
attorneys'  fees)  suffered or incurred by the holder hereof in collecting  this
Note or enforcing  any rights in any  collateral  herefor.  The Borrower  hereby
waives presentment for payment and demand.

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


                                          By:_________________________________


Its:______________________________






<PAGE>




                                  Exhibit B

                          Form of Opinion of Counsel


                           __________________, 1996


Harris Trust and Savings Bank, as Agent
Chicago, Illinois

Lenders from time to time party to the
  Credit Agreement hereinafter identified

Gentlemen:

      We have served as counsel to EMCOR  Group,  Inc.,  a Delaware  Corporation
(the "Company"),  DYN Specialty Contracting Inc., a Virginia corporation ("DYN",
the Company and DYN being  hereinafter  referred  to as the  Borrowers)  and the
corporations  listed on Exhibit A hereto (the "Guarantors") in connection with a
revolving  credit  facility being made  available by you to the Borrowers.  This
opinion is delivered to you at the request of the Borrowers  pursuant to Section
6.2 of the Credit  Agreement  dated as of  _______________  between  you and the
Borrowers (the "Credit Agreement") and capitalized terms used without definition
below have the meanings ascribed to them in the Credit Agreement.

      As  such  counsel,   we  have  supervised  the  taking  of  the  corporate
proceedings  necessary  to  authorize  the  execution  and delivery of, and have
examined  executed  originals  of,  the Loan  Documents  described  on Exhibit B
attached hereto. We have also examined and are familiar with:

            (i) A copy of the articles of incorporation of each of the Borrowers
and Guarantors,  each certified  within ____ days hereof by the Secretary of the
State of incorporation of each such Borrower and Guarantor;

            (ii) Certificates  dated as of a date no earlier than ___ days prior
to the date  hereof from the  Secretary  of the States of  incorporation  of the
Borrowers and  Guarantors  and in each other state where any of the Borrowers or
Guarantors  is licensed or qualified to do business,  as to the good standing of
each such corporation in those states;

            (iii) A copy of the by-laws of each of the Borrowers and  Guarantors
certified  by the  Secretary  of such  corporation  as being the by-laws of such
corporation in effect at all times since ____________, 19___;

            (iv) Copies of certain resolutions adopted by the board of directors
[and  the  stockholders]  of  each  Borrower  and  Guarantor,  certified  by the
Secretary of such Borrower or Guarantor; and

            (v)   [Identify   any  other   matters  or  items   pertaining  to
organization,     authority and good standing;]

and we have also examined such other  instruments  and records and inquired into
such other factual  matters and matters of law as we deem necessary or pertinent
to the  formulation of the opinions  hereinafter  expressed.  As to questions of
fact relevant to the opinions  stated  herein,  we have relied upon  information
obtained  from the officers of each  Borrower and  Guarantor  and other  sources
believed by us responsible,  and, with your permission, we have assumed, without
independent investigation, the accuracy of such information.

      In rendering the opinions expressed below, we have examined originals,  or
copies  of  originals  certified  to  our  satisfaction,   of  such  agreements,
documents,  certificates  and  other  statements  of  government  officials  and
corporate officers and such other papers and evidence as we have deemed relevant
and necessary as a basis for such opinions.  We have assumed the  genuineness of
all  signatures  (other  than  those  of  any  Borrowers  and  Guarantors),  the
authenticity  of all documents  submitted to us as originals and the  conformity
with the  original  documents  of any  copies  thereof  submitted  to us for our
examination.

      Based upon the foregoing, we are of the opinion that:

            1. Each Borrower and Guarantor is a corporation  duly  organized and
validly  existing  and  in  good  standing  under  the  laws  of  its  state  of
incorporation  with full and adequate  corporate power and authority to carry on
its business as now  conducted  and is duly  licensed or  qualified  and in good
standing in each jurisdiction  wherein the conduct of its business or the assets
and Properties owned or leased by it require such licensing or qualification.

            2. Each  Borrower has full right,  power and authority to borrow and
apply for Letters of Credit from you, each  Guarantor has full right,  power and
authority to guarantee all of the  indebtedness,  obligations and liabilities of
the Borrowers to you, and the Borrowers and the Guarantors each have full right,
power and authority to mortgage,  pledge,  assign and otherwise  encumber  their
assets and  properties as  collateral  security for such  borrowings,  letter of
credit  liabilities  and  guarantees,  to execute and deliver the Loan Documents
executed by it and to observe  and  perform  all the matters and things  therein
provided for. The execution and delivery of the Loan  Documents  executed by the
Borrowers and Guarantors does not, nor will the observance or performance of any
of the matters or things therein  provided for,  contravene any provision of law
or of the articles of incorporation,  charter or by-laws of any of the Borrowers
and Guarantors (there being no other agreements under which any of the Borrowers
are  organized)  or,  to the best of our  knowledge  after due  inquiry,  of any
covenant,  indenture or agreement binding upon or affecting any of the Borrowers
or Guarantors or any of their respective properties or assets.

            3. The Loan Documents  executed by the Borrowers and Guarantors have
been duly authorized by all necessary corporate action (no stockholder  approval
being required), have been executed and delivered by the proper officers of each
Borrower and  Guarantor  and  constitute  valid and binding  agreements  of each
Borrower  and  Guarantor  enforceable  against  them in  accordance  with  their
respective terms, except as such terms may be limited by bankruptcy,  insolvency
or similar  laws and legal or  equitable  principles  affecting  or limiting the
enforcement of creditors' rights generally.

            4. No order,  authorization,  consent,  license or exemption  of, or
filing or  registration  with,  any court or  governmental  department,  agency,
instrumentality or regulatory body, whether local, state or federal,  is or will
be required in  connection  with the lawful  execution  and delivery of the Loan
Documents or the  observance  and  performance by each Borrower and Guarantor of
any of the terms thereof.

            5. To the  best of our  knowledge  after  due  inquiry,  there is no
action,  suit,  proceeding or investigation at law or in equity before or by any
court or public body pending or threatened  against or affecting any Borrower or
Guarantor or any of their respective  assets and properties  which, if adversely
determined,  could  result in any  material  adverse  change in the  properties,
business,  operations or financial  condition of any Borrower or Guarantor or in
the  value  of  the  collateral   security  for  your  loans  and  other  credit
accommodations to the Borrowers.

            6. The  Revolving  Loans and L/C  Obligations  of the  Company  will
constitute "Senior Indebtedness" for purposes of the Series C Indenture.

[We note that many of the Loan  Documents  provide that they are governed by the
laws of Illinois.  For purposes of our opinion as to the  enforceability of such
Loan Documents,  we have with your permission  assumed that the laws of Illinois
do not  differ  in any  respect  pertinent  to such  opinion  from  the  laws of
_____________.]

                                          Respectfully submitted,







<PAGE>





                                  Exhibit A
                                The Guarantors






<PAGE>




                                  Exhibit B

      (a) Credit  Agreement  by and between the  Borrowers  and Harris Trust and
Savings  Bank  ("Harris"),  individually  and as  agent  (Harris  acting  in its
capacity as agent being herein referred to as the "Agent");

      (b)   Revolving  Credit  Note of the  Company  payable  to the  order of
Harris in the principal sum of $________________;

      (c)   Revolving  Credit  Note of DYN  payable  to the order of Harris in
the principal sum of _____________________;

      (d)   Guarantees from ______________ to the Agent;

      (e)   Pledge Agreements from ______________, to the Agent;

      (f)   Security Agreements from _______________ to the Agent;

[NOTE: Other Collateral Documents to be added.]

The  foregoing  documents  are  herein  collectively  referred  to as the  "Loan
Documents".







<PAGE>

                                  EXHIBIT C

                              EMCOR GROUP, INC.
                          BORROWING BASE CERTIFICATE

TO:   Harris Trust and Savings Bank as Agent under, and the Lenders party to,
      the Credit Agreement described below

     Pursuant to the terms of the Credit Agreement dated as of __________,  1996
among us (the "Credit Agreement"),  we submit this Borrowing Base Certificate to
you and certify that the  information  set forth below and on any attachments to
this  Certificate  is  true,  correct  and  complete  as of  the  date  of  this
Certificate. Any capitalized terms used herein without definition shall have the
same meanings as such terms have in the Credit Agreement.



                              I. BORROWING BASE

A.    BORROWING BASE

      1.    Gross accounts

               DYN                               ____________
               EMCOR EX DYN                      ____________       ____________
                                                                           A1

      2.    Ineligible accounts identified
            in Credit Agreement

               DYN                              ____________
               EMCOR EX DYN                     ____________        ____________
                                                                           A2

      3.    Claims/disputed amounts not
            included in A2                                          ____________

               DYN                              ____________
               EMCOR EX DYN                     ____________        ____________
                                                                           A3

      *4.   DYN Sublimit

               DYN Net  Worth                   ____________  
               Less Net Due to DYN 
               or plus Net Due from DYN         ____________ 
               Total                            ____________ 
               DYN Sublimit (66-2/3% of
               total)                           ____________
                                                                   -------------
                                                                           A4

      5.    Borrowing Base

               EMCOR EX DYN (A1 minus A2
                   and A3) x .4                 ____________
            DYN (Lesser of A1 minus A2 and
                  A3 x .4 or A4)                ____________
                                                                    ------------
                                                                           A5

B.    ADVANCES/AVAILABILITY (SHORTFALL)

      1.    Revolving Loans                     ____________
                                                     B1

      2.    Letters of Credit                   ____________
                                                     B2

      3.    Total Advances (sum of
            line B1 and B2)                                         ____________
                                                                           B3

      4.    Borrowing Base
            (line A5)                                               ____________
                                                                           B4
      5.    Unused Availability
            (B3 minus B4)                                           ____________
                                                                           B5


Dated as of this ____ day of ______________, 19___.

                                          EMCOR GROUP, INC.
                                          By:_________________________________


Its______________________________

- ------------------
*Eliminate DYN Sublimit Restrictions after the Consolidation Date



<PAGE>

                                  EXHIBIT D

                              EMCOR GROUP, INC.

                            COMPLIANCE CERTIFICATE

                       FOR THE MONTH ENDING __________


To:   Harris Trust and Savings Bank
      as Agent under, and the Lenders
      party to the Credit Agreement
      described below

      This  Compliance  Certificate is furnished to the Lenders  pursuant to the
requirements  of Section 7.5 of the Credit  Agreement dated as of June 19, 1996,
by and between EMCOR Group,  Inc., a Delaware  corporation (the "Company"),  DYN
Specialty Contracting Inc., a _____________ corporation ("DYN") and Harris Trust
and Savings Bank as agent thereunder (the "Agent") and the Lenders named therein
(the "Credit  Agreement").  Unless otherwise  defined herein,  the terms used in
this Compliance  Certificate  have the meanings  ascribed  thereto in the Credit
Agreement.

THE UNDERSIGNED HEREBY CERTIFIES THAT:

      1.    I am the duly elected ______________ of the Company;

      2. We have reviewed the terms of the Credit Agreement and we have made, or
have  caused  to be  made  under  our  supervision,  a  detailed  review  of the
transactions and conditions of the Borrowers and Restricted  Subsidiaries during
the  accounting  period  covered by the  financial  statements  being  furnished
concurrently with this Certificate;

      3. The examinations described in paragraph 2 did not disclose, and we have
no knowledge of, the  existence of any condition or the  occurrence of any event
which  constitutes a Default or an Event of Default at any time during or at the
end of the accounting period covered by the accompanying financial statements or
as of the date of this Certificate, except as set forth immediately below;

      4.    The financial statements required by Section 7.5 of the Credit
Agreement and being furnished to you concurrently with this Certificate are
true, correct and complete as of the dates and for the periods covered
thereby; and

      5. Schedule I attached hereto sets forth  financial data and  computations
evidencing  the  Borrowers'  compliance  with  certain  covenants  of the Credit
Agreement, all of which data and computations are true, complete and correct and
have been made in accordance with the relevant Sections of the Credit Agreement.
1

      6.    Also attached hereto is a summary of accounts over $1,000,000 in
litigation, mediation or arbitration.*

      Described below are the exceptions,  if any, to paragraph 3 by listing, in
detail,  the nature of the  condition or event,  the period  during which it has
existed and the action which the Borrowers have taken, is taking, or proposes to
take with respect to each such condition or event:
                  ------------------------------------------------

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

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

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

      The foregoing certifications,  together with the computations set forth in
Schedule I attached hereto and the financial statements  furnished  concurrently
with this  Certificate  in support  hereof,  are made and  delivered  as of this
______ day of _______________, 19___.

                                          EMCOR GROUP, INC.


                                       By:_______________________________
                                     Title:______________________________



                                                     (Type or Print Name)


*Include Only Quarterly.




<PAGE>



                                  SCHEDULE I

                              EMCOR GROUP, INC.

                           COMPLIANCE CALCULATIONS
                FOR __________________, 1996 CREDIT AGREEMENT

                   CALCULATIONS AS OF _______________, 19__

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

A.    Adjusted Tangible Net Worth (Section 7.6)
                          [Calculations to follow.]

B.    Leverage Ratio (Section 7.7)
                          [Calculations to follow.]

C.    Interest Coverage Ratio (Section 7.8)
                          [Calculations to follow.]

D.    Current Ratio (Section 7.9)
                          [Calculations to follow.]

D.    Capital and Other Restricted Expenditures (Section 7.13)
                          [Calculations to follow.]

E.    Applicable Margin (Senior Debt to EBITDA)
                          [Calculations to follow.]




<PAGE>


                                  EXHIBIT E

                          ASSIGNMENT AND ACCEPTANCE

                         Dated _____________, 19_____

      Reference  is made to the Credit  Agreement  dated as of  _______________,
1996 (the "Credit Agreement") among EMCOR Group, Inc., the other Borrowers,  the
Lenders (as defined in the Credit  Agreement) and Harris Trust and Savings Bank,
as Agent for the Lenders (the  "Agent").  Terms defined in the Credit  Agreement
are        used        herein        with        the        same        meaning.
_____________________________________________________   (the   "Assignor")   and
_________________________ (the "Assignee") agree as follows:

      1. The Assignor hereby sells and assigns to the Assignee, and the Assignee
hereby  purchases and assumes from the Assignor,  a _______%  interest in and to
all of the Assignor's  rights and obligations  under the Credit  Agreement as of
the Effective  Date (as defined  below),  including,  without  limitation,  such
percentage  interest in the Assignor's  Commitment as in effect on the Effective
Date and the  Revolving  Loans,  if any,  owing to the Assignor on the Effective
Date and the Assignor's Percentage of any outstanding L/C Obligations, if any.

      2. The Assignor (i) represents and warrants that as of the date hereof (A)
its Commitment is $____________,  (B) the aggregate outstanding principal amount
of  Revolving  Loans  made by it under the Credit  Agreement  that have not been
repaid is  $____________  and a description of the interest rates and currencies
for such Revolving Loans is attached as Schedule 1 hereto, and (C) the aggregate
principal amount of Assignor's outstanding L/C Obligations is $___________ and a
description  of  the  expiry  date,  amount  and  account  party  for  such  L/C
Obligations is also attached as Schedule 1 hereto;  (ii) represents and warrants
that it is the legal and  beneficial  owner of the interest being assigned by it
hereunder and that such interest is free and clear of any adverse  claim,  lien,
or  encumbrance  of any kind;  (iii) makes no  representation  or  warranty  and
assumes  no  responsibility  with  respect  to  any  statements,  warranties  or
representations  made  in or in  connection  with  the  Loan  Documents  or  the
execution, legality, validity, enforceability, genuineness, sufficiency or value
of the Loan  Documents or any other  instrument or document  furnished  pursuant
thereto;   and  (iv)  makes  no   representation  or  warranty  and  assumes  no
responsibility  with respect to the  financial  condition of any Borrower or any
Guarantor or the  performance  or observance by any Borrower or any Guarantor of
any of their  respective  obligations  under the Credit  Agreement  or any other
instrument or document furnished pursuant thereto.

      3. The  Assignee (i)  confirms  that it has received  copies of the Credit
Agreement  and the  Intercreditor  Agreement,  together  with copies of the most
recent  financial  statements  delivered to the Lenders  pursuant to in Sections
7.5(a),  (b) and (c) thereof and such other  documents and information as it has
deemed  appropriate  to make its own credit  analysis and decision to enter into
this  Assignment and  Acceptance;  (ii) agrees that it will,  independently  and
without  reliance upon the Agent,  the Assignor or any other Lender and based on
such  documents  and  information  as it shall  deem  appropriate  at the  time,
continue to make its own credit  decisions in taking or not taking  action under
the Credit  Agreement;  (iii)  appoints  and  authorizes  the Agent to take such
action  as Agent on its  behalf  and to  exercise  such  powers  under  the Loan
Documents as are delegated to the Agent by the terms thereof, together with such
powers as are reasonably incidental thereto; (iv) agrees that it will perform in
accordance  with their  terms all of the  obligations  which by the terms of the
Credit  Agreement  are  required  to be  performed  by it as a  Lender;  and (v)
specifies as its lending offices (and address for notices) the offices set forth
beneath its name on the signature pages hereof.

      4. As consideration  for the assignment and sale contemplated in Section 1
hereof,  the  Assignee  shall  pay to the  Assignor  on the  Effective  Date (as
hereinafter  defined)  in  federal  funds  an  amount  equal  to the  percentage
specified in Section One of the balance of Revolving  Loans  outstanding on such
date. It is understood that  commitment  and/or Letter of Credit fees accrued to
the date hereof with respect to the interest assigned hereby are for the account
of the Assignor and such fees  accruing  from and  including the date hereof are
for the account of the  Assignee.  Each of the Assignor and the Assignee  hereby
agrees that if it receives  any amount under the Credit  Agreement  which is for
the account of the other party hereto, it shall receive the same for the account
of such other  party to the extent of such other  party's  interest  therein and
shall promptly pay the same to such other party.

      5.  The  effective  date  for  this  Assignment  and  Acceptance  shall be
_____________,  19___(the  "Effective  Date").  Following  the execution of this
Assignment  and  Acceptance,  it  will  be  delivered  to the  Company  for  its
acceptance and to the Agent for acceptance and recording by the Agent.

      6. Upon such  acceptance and recording,  as of the Effective Date, (i) the
Assignee shall be a party to the Credit Agreement and, to the extent provided in
this  Assignment  and  Acceptance,  have the rights and  obligations of a Lender
thereunder  and  (ii)  the  Assignor  shall,  to the  extent  provided  in  this
Assignment  and  Acceptance,  relinquish  its  rights and be  released  from its
obligations under the Credit Agreement.

      7. Upon such acceptance and recording,  from and after the Effective Date,
the Agent shall make all payments  under the Credit  Agreement in respect of the
interest  assigned  hereby  (including,  without  limitation,  all  payments  of
principal,  interest  and  commitment  and  letter of credit  fees with  respect
thereto) to the Assignee.  The Assignor and Assignee shall make all  appropriate
adjustments  in payments  under the Credit  Agreement  for periods  prior to the
Effective Date directly between themselves.

      8. In accordance with Section 11.18 of the Credit Agreement,  the Assignee
requests and directs that the Agent  prepare and cause the  Borrowers to execute
and deliver to the Assignee Revolving Credit Notes payable to the Assignee.

      9.    This   Assignment  and  Acceptance   shall  be  governed  by,  and
construed in accordance with, the laws of the State of Illinois.

[ASSIGNOR LENDER]


                                       By:_____________________________________

                                     Title:____________________________________

                                          [ASSIGNEE LENDER]


                                       By:_____________________________________
                                     Title:____________________________________

                                          Lending   Office   (and   address  for
                                            notices):



Accepted and consented this
____ day of ___________, 19__

EMCOR GROUP, INC.


By:____________________________
Title:_________________________


DYN SPECIALTY CONTRACTING INC.


By:____________________________
Title:_________________________


Accepted and consented to by the Agent this
_______ day of ___________, 19__

HARRIS TRUST AND SAVINGS BANK


By:____________________________
Title:_________________________




<PAGE>



                                      --
                                  SCHEDULE I
                               REVOLVING LOANS

                  Borrower to Whom     Type of      Interest   Currency if other
Principal Amount   Loan Disbursed   Revolving Loan    Rate     than U.S. Dollars
- ----------------   --------------   --------------    ----     -----------------
                                                           









                               LETTER OF CREDIT
                                                             Currency if
                                                              other than
  Account Party        Face Amount        Expiry Date        U.S. Dollars 
  -------------        -----------        -----------         ----------
                                                             








<PAGE>





                                 SCHEDULE 4.2

                                THE GUARANTORS

                              INITIAL GUARANTORS

<TABLE>
<CAPTION>


                                JURISDICTION OF    PERCENTAGE        OWNER
            NAME                 INCORPORATION     OWNERSHIP
- -------------------------------------------------------------------------------------

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

EMCOR Group, Inc.

DYN Specialty Contracting Inc.       Virginia        100%      EMCOR
                                                               Mechanical/Electrical
                                                               Services, Inc.

Dynalectric Company                   Florida        100%      DYN Specialty
                                                               Contracting, Inc.

Dynalectric Company of Nevada         Nevada         100%      DYN Specialty
                                                               Contracting, Inc.

Contra Costa Electric, Inc.         California       100%      DYN Specialty
                                                               Contracting, Inc.

B&B Contracting and Supply Company     Texas         100%      DYN Specialty
                                                               Contracting, Inc.

KDC, Inc.                           California       100%      DYN Specialty
                                                               Contracting, Inc.

EMCOR Mechanical/Electrical          Delaware        100%      MES Holdings Corp.
Services, Inc.

EMCOR Mechanical/Electrical          Delaware        100%      EMCOR
Services (East), Inc.                                          Mechanical/Electrical
                                                               Services, Inc.

Heritage Air Systems, Inc.           New York        100%      EMCOR
                                                               Mechanical/Electrical
                                                               Services (East), Inc.

Welsbach Electric Corp.              Delaware        100%      EMCOR
                                                               Mechanical/Electrical
                                                               Services (East), Inc.

Forest Electric Corp.                New York        100%      EMCOR
                                                               Mechanical/Electrical
                                                               Services (East), Inc.

Welsbach Electric Corp. of L.I.      New York        100%      EMCOR
                                                               Mechanical/Electrical
                                                               Services (East), Inc.

Penguin Maintenance and Services     Delaware        100%      EMCOR
Inc.                                                           Mechanical/Electrical
                                                               Services (East), Inc.

EMCOR/Penguin Air Conditioning       New York        100%      EMCOR
Corp.                                                          Mechanical/Electrical
                                                               Services (East), Inc.

J.C. Higgins Corp.                   Delaware        100%      EMCOR
                                                               Mechanical/Electrical
                                                               Services (East), Inc.

EMCOR Mechanical/Electrical          Delaware        100%      EMCOR
Services (Midwest), Inc.                                       Mechanical/Electrical
                                                               Services, Inc.

JWP/Hyre Electric Co. of Indiana,    Delaware        100%      EMCOR
Inc.                                                           Mechanical/Electrical
                                                               Services, Inc.

EMCOR Midwest, Inc.                  Delaware        100%      EMCOR
                                                               Mechanical/Electrical
                                                               Services (Midwest),
                                                                       Inc.

Gibson Electric Co., Inc.           New Jersey       100%      EMCOR Midwest, Inc.

EMCOR Mechanical/Electrical          Delaware        100%      EMCOR
Service (West), Inc.                                           Mechanical/Electrical
                                                               Services, Inc.

University Mechanical &             California       100%      EMCOR
Engineering Contractors, Inc.                                  Mechanical/Electrical
                                                               Services (West), Inc.

T.L. Cholette, Inc.                  Michigan        100%      University Mechanical
                                                               & Engineering
                                                               Contractors, Inc.

University Mechanical &               Arizona        100%      University Mechanical
Engineering Contractors, Inc.                                  & Engineering
                                                               Contractors, Inc., a
                                                               California corporation

Hansen Mechanical Contractors,        Nevada         100%      University Mechanical
Inc.                                                           & Engineering
                                                               Contractors, Inc., a
                                                               California corporation

Trautman & Shreve, Inc.              Colorado        100%      University Mechanical
                                                               & Engineering
                                                               Contractors, Inc., a
                                                               California corporation

EMCOR Mechanical/Electrical          Delaware        100%      EMCOR
Services (South), Inc.                                         Mechanical/Electrical
                                                               Services, Inc.

EMCOR Gowan, Inc.                      Texas         100%      EMCOR
                                                               Mechanical/Electrical
                                                               Services (South) Inc.

EMCOR International, Inc.            Delaware        100%      MES Holdings
                                                                Corporation

Inte-Fac Corp                        New York        100%      EMCOR
                                                               Mechanical/Electrical
                                                               Services (East), Inc.

EMCOR Facilities Services, Inc.      Delaware        100%      MES Holdings
                                                                Corporation

MES Holdings Corporation             Delaware        100%      EMCOR Group, Inc.
</TABLE>


                 TO BE PROVIDED BY TRANCHE B ACTIVATION DATE
<TABLE>
<CAPTION>



                                    JURISDICTION OF    PERCENTAGE           OWNER
            NAME                     INCORPORATION     OWNERSHIP
- -------------------------------------------------------------------------------------------
<S>                                 <C>                <C>          <C>    

EMCOR (UK) Limited                        UK              100%      EMCOR International
                                                                    Inc.

Drake & Scull Engineering Ltd.            UK              100%      EMCOR (UK) Limited

Drake & Scull  Airport Services           UK              100%      Drake & Scull
Ltd.                                                                Engineering Ltd.

Drake & Scull Technical Services          UK              100%      Drake & Scull
Ltd.                                                                Engineering Ltd.

Drake & Scull Engineering (UK)            UK              100%      Drake & Scull
Limited                                                             Engineering Ltd.

Drake & Scull International, Ltd.         UK              100%      Drake & Scull
                                                                    Engineering Ltd.

Drake & Scull (Scotland) Ltd.             UK              100%      EMCOR (UK) Limited

HKW Consultancy Ltd.                      UK              100%      EMCOR (UK) Limited

Drake & Scull Holdings Ltd.               UK              100%      EMCOR (UK) Limited

DSC Building Ltd.                         UK              100%      Drake & Scull
                                                                    Holdings Ltd.

Del Commerce (Contract Services)          UK              100%      Drake & Scull
Ltd.                                                                Holdings Ltd.

JWP Leasing (UK) Ltd.                     UK              100%      EMCOR (UK) Limited

Heritage Air Systems Ltd.                 UK              100%      EMCOR (UK) Limited

</TABLE>

                 TO BE PROVIDED BY TRANCHE C ACTIVATION DATE

<TABLE>
<CAPTION>

                               JURISDICTION OF   PERCENTAGE           OWNER
            NAME                INCORPORATION     OWNERSHIP
- -------------------------------------------------------------------------------------------
<S>                                <C>           <C>                <C>  

JWP NRO Holdings, Inc.             Canada            100%           EMCOR International
                                                                    Inc.

EMCOR Canada Ltd.                  Canada            100%           EMCOR International
                                                                    Inc.

Comstock Canada, Ltd.              Canada            100%           EMCOR International
                                                                    Inc.

</TABLE>




<PAGE>





                                 SCHEDULE 5.2

                               THE SUBSIDIARIES

                           RESTRICTED SUBSIDIARIES

<TABLE>
<CAPTION>


                                    JURISDICTION OF    PERCENTAGE     OWNER
            NAME                     INCORPORATION     OWNERSHIP
- -------------------------------------------------------------------------------------------
<S>                                 <C>                <C>          <C>    

DYN Specialty Contracting Inc.         Virginia           100%      EMCOR
                                                                    Mechanical/Electrical
                                                                    Services, Inc.

Dynalectric Company                     Florida           100%      DYN Specialty
                                                                    Contracting, Inc.

Dynalectric Company of Nevada           Nevada            100%      DYN Specialty
                                                                    Contracting, Inc.

Contra Costa Electric, Inc.           California          100%      DYN Specialty
                                                                    Contracting, Inc.

B & B Contracting and Supply             Texas            100%      DYN Specialty
Company                                                             Contracting, Inc.

KDC, Inc.                             California          100%      DYN Specialty
                                                                    Contracting, Inc.

EMCOR Mechanical/Electrical            Delaware           100%      MES Holdings Corp.
Services, Inc.

Defender Indemnity, Ltd.                Vermont           100%      EMCOR Risk Holdings,
                                                                    Inc.

EMCOR Risk Holdings, Inc.              Delaware           100%      MES Holdings Corp.

EMCOR Mechanical/Electrical            Delaware           100%      EMCOR
Services (East), Inc.                                               Mechanical/Electrical
                                                                        Services

Heritage Air Systems, Inc.             New York           100%      EMCOR Mechanical
                                                                    Electrical Services
                                                                    (East), Inc.

Welsbach Electric Corp.                New York           100%      EMCOR Mechanical
                                                                    Electrical Services
                                                                    (East), Inc.

Forest Electric Corp.                  New York           100%      EMCOR Mechanical
                                                                    Electrical Services
                                                                    (East), Inc.

Welsbach Electric Corp. of L.I.        New York           100%      EMCOR Mechanical
                                                                    Electrical Services
                                                                    (East), Inc.

Penguin Maintenance and Services       Delaware           100%      EMCOR Mechanical
Inc.                                                                Electrical Services
                                                                    (East), Inc.

Inte-Fac Corp.                         New York           100%      EMCOR Mechanical
                                                                    Electrical Services
                                                                    (East), Inc.

EMCOR/Penguin Air Conditioning         New York           100%      EMCOR Mechanical
Corp.                                                               Electrical Services
                                                                    (East), Inc.

J.C. Higgins Corp.                     Delaware           100%      EMCOR Mechanical
                                                                    Electrical Services
                                                                    (East), Inc.

EMCOR Facilities Services, Inc.        Delaware           100%      MES Holdings Corp.

EMCOR Mechanical/Electrical            Delaware           100%      EMCOR
Services (Midwest), Inc.                                            Mechanical/Electrical
                                                                    Services, Inc.

JWP/Hyre Electric Co. of Indiana,      Delaware           100%      EMCOR
Inc.                                                                Mechanical/Electrical
                                                                    Services (Midwest),
                                                                            Inc.

JWP Technical Services of Ohio,          Ohio             100%      EMCOR
Inc.                                                                Mechanical/Electrical
                                                                    Services (Midwest),
                                                                            Inc.

EMCOR Midwest, Inc.                    Delaware           100%      EMCOR
                                                                    Mechanical/Electrical
                                                                    Services (Midwest),
                                                                            Inc.

Gibson Electric Co., Inc.             New Jersey          100%      EMCOR Midwest, Inc.

Zack Power & Industrial Company        Delaware           100%      EMCOR
                                                                    Mechanical/Electrical
                                                                    Services (Midwest),
                                                                            Inc.

EMCOR Mechanical/Electrical            Delaware           100%      EMCOR
Services (West), Inc.                                               Mechanical/Electrical
                                                                    Services, Inc.

University Mechanical &               California          100%      EMCOR
Engineering Contractors, Inc.                                       Mechanical/Electrical
                                                                    Services (West), Inc.

T.L. Cholette, Inc.                    Michigan           100%      University Mechanical
                                                                    & Engineering
                                                                    Contractors, Inc., a
                                                                    California corporation

University Mechanical &                 Arizona           100%      University Mechanical
Engineering Contractors, Inc.                                       & Engineering
                                                                    Contractors, Inc., a
                                                                    California corporation

Hansen Mechanical Contractors,          Nevada            100%      University Mechanical
Inc.                                                                & Engineering
                                                                    Contractors, Inc., a
                                                                    California corporation

Trautman & Shreve, Inc.                Colorado           100%      University Mechanical
                                                                    & Engineering
                                                                    Contractors, Inc., a
                                                                    California corporation

RCV Cogeneration, Inc.                California          100%      University Mechanical
                                                                    & Engineering
                                                                    Contractors, Inc., a
                                                                    California corporation

EMCOR Mechanical/Electrical            Delaware           100%      EMCOR
Services (South), Inc.                                              Mechanical/Electrical
                                                                    Services, Inc.

EMCOR Gowan, Inc.                        Texas            100%      EMCOR
                                                                    Mechanical/Electrical
                                                                    Services (South) Inc.

EMCOR International, Inc.              Delaware           100%      MES Holdings

JWP NRO Holdings, Inc.                  Canada            100%      EMCOR International

EMCOR Canada Ltd.                       Canada            100%      EMCOR International

Comstock Canada Ltd.                    Canada            100%      EMCOR International

EMCOR (UK) Limited                        UK              100%      EMCOR International,
                                                                    Inc.

Drake & Scull Engineering Ltd.            UK              100%      EMCOR UK Limited

Drake & Scull Airport Services            UK              100%      Drake & Scull
Ltd.                                                                Engineering, Ltd.

Drake & Scull Technical Services          UK              100%      Drake & Scull
Ltd.                                                                Engineering, Ltd.

Drake & Scull Engineering (UK)            UK              100%      Drake & Scull
Limited                                                             Engineering, Ltd.

Drake & Scull International, Ltd.         UK              100%      Drake & Scull
                                                                    Engineering, Ltd.

Drake & Scull (Scotland) Ltd.             UK              100%      EMCOR (UK) Limited

HKW Consultancy Ltd.                      UK              100%      EMCOR (UK) Limited

Drake & Scull Holdings Ltd.               UK              100%      EMCOR (UK) Limited

DSC Building Ltd.                         UK              100%      Drake & Scull
                                                                    Holdings Ltd.

Del Commerce (Contract Services)          UK              100%      EMCOR UK Limited
Ltd.

H & F Kornfeld Ltd. (UK)                  UK              100%      EMCOR UK Limited

JWP Leasing (UK) Ltd.                     UK              100%      EMCOR (UK) Limited

BL Distribution Ltd.                      UK              100%      EMCOR (UK) Limited

Businessland Holdings Ltd.                UK              100%      EMCOR (UK) Limited

Heritage Air Systems Ltd.                 UK              100%      EMCOR (UK) Limited

Forest Drake & Scull Electric Ltd.        UK              100%      EMCOR (UK) Limited

MES Holdings Corporation               Delaware           100%      EMCOR Group, Inc.

JWP Technical Services                 Malaysia           100%      EMCOR International,
(Malaysia)2                                                         Inc.

JWP (Cayman Islands) Ltd.*          Caymen Islands        100%      EMCOR International,
                                                                    Inc.

NESMA EMCOR Company Ltd. (50%)*      Saudia Arabia        50%       JWP (Cayman Islands)
                                                                    Ltd.

Drake & Scull (Cayman Islands)      Caymen Islands        100%      EMCOR International,
Ltd.*                                                               Inc.

Drake & Scull Assarain (Oman)            Oman             49%       Drake & Scull (Cayman
(49%)*                                                              Islands) Ltd.

Lunar Drake & Scull Llc. (UAE)        __________          49%       Drake & Scull (Cayman
(49%)*                                                              Islands) Ltd.

</TABLE>

<PAGE>



                          UNRESTRICTED SUBSIDIARIES
<TABLE>
<CAPTION>


                                    JURISDICTION OF    PERCENTAGE
               NAME                  INCORPORATION     OWNERSHIP            OWNER
- -------------------------------------------------------------------------------------------
<S>                                 <C>                <C>          <C>  

A to Z Equipment Corp.                New York            100%      Sellco Corporation

Afgo Engineering Corporation          New York            100%      Sellco Corporation

Afgo Engineering Corp. of             Delaware            100%      Sellco Corporation
Washington

Antwerp Education Center N.V.         Belgium             100%      Sellco Corporation

AZCO Inc.                             Delaware            100%      Sellco Corporation

Businessland Canada Ltd.              Canada              100%      JWP Information
                                                                    Services Inc.

Businessland (Hong Kong) Limited      Hong Kong           100%      JWP Information
                                                                    Services Inc.

Case/Acme Systems, Inc.               New York            100%      Sellco Corporation

Computer Maintenance Corporation      New Jersey          100%      Sellco Corporation

Drake & Scull France SARL             France              100%      Sellco Corporation

E.M.A. International, Inc.            District of         100%      Sellco Corporation
                                      Columbia

Gone Inc.                             California          100%      Sellco Corporation

G/M Tech                              New York            100%      Sellco Corporation

Guzovsky/JWP Electrical Inc.          Rhode Island        100%      Sellco Corporation

Intec Business Phones Inc.            Delaware            100%      Sellco Corporation

ISYS Security Systems, Inc.           Delaware            100%      Sellco Corporation

Jamaica Water Securities Corp.        New York            100%      Sellco Corporation

Jamaica Water Supply Company          New York            96%       Jamaica Water
                                                                    Securities Corp.

JWP Voc I                             Delaware            100%      Sellco Corporation

JWP Voc II                            Delaware            100%      Sellco Corporation

JWP Asset Management Inc.             Delaware            100%      Sellco Corporation

JWP Communications Inc.               Delaware            100%      Sellco Corporation

JWP Controls Inc.                     California          100%      Sellco Corporation

JWP Controls Holding, Inc.            Delaware            100%      Sellco Corporation

JWP Credit Corp.                      Delaware            100%      Sellco Corporation

JWP E.C. Corp.                        New York            100%      Sellco Corporation

JWP Environmental Composting          Minnesota           100%      Sellco Corporation
Technologies, Inc.

JWP Equipment Services Inc.           Delaware            100%      Sellco Corporation

JWP Espana SA                         Spain               100%      Sellco Corporation

JWP France SARL                       France              100%      Sellco Corporation

JWP/Guzovsky Electrical Corp.         Massachusetts       100%      Sellco Corporation

JWP/HCII Corp.                        Delaware            100%      Sellco Corporation

JWP of Hartford, Inc.                 Connecticut         100%      Sellco Corporation

JWP Information Services, Inc.        California          100%      Sellco Corporation

JWP Information Services SARL         France              100%      Sellco Corporation

JWP/IS Network Integration            Pennsylvania        100%      Sellco Corporation
Services, Inc.

JWP Merger Sub Inc.                   Delaware            100%      Sellco Corporation

JWP New England Inc.                  Delaware            100%      Sellco Corporation

JWP/SHI Corp.                         Delaware            100%      Sellco Corporation

JWP TS Corp.                          New Jersey          100%      Sellco Corporation

Kerby Saunders, Inc.                  New York            100%      Sellco Corporation

Kerby Saunders-Warkol, Inc.           Delaware            100%      Sellco Corporation

Marlon of Texas, Inc.                 Texas               100%      Sellco Corporation

Metalair Industries, Inc.             Texas               100%      Sellco Corporation

Micro Avenue                          Belgium             100%      Sellco Corporation

MicroCom                              Belgium             100%      Sellco Corporation

North Am. Heating & Air               Delaware            100%      Sellco Corporation
Conditioning Company

Sivea Benelux                         Belgium             100%      Sellco Corporation

SLR Constructors Inc.                 New York            100%      Sellco Corporation

Superior Engineering Corporation      Utah                100%      Sellco Corporation

Sutter Hill Industries, Inc.          Illinois            100%      Sellco Corporation

Teletime Limited                      Ontario             100%      Sellco Corporation

University Cogeneration, Inc.         California          100%      Sellco Corporation

University Nuclear Systems, Inc.      Washington          100%      Sellco Corporation

Wachtel, Duklauer & Fein              New York            100%      Sellco Corporation
Incorporated

JWP Unrestricted Sub 9 Inc.           New York            100%      Sellco Corporation

Sellco Corporation                    Delaware            100%      EMCOR Group, Inc.

JWP Energy Products Inc.              Idaho               100%      EMCOR Group, Inc.

JWP/MEC Corp.                         Pennsylvania        100%      EMCOR Group, Inc.

University Energy Services of         California          100%      EMCOR Group, Inc.
California, Inc.

University Technical Services Inc.    California          100%      University Energy
                                                                    Services of California

JWP Telecom, Inc.                     Delaware            100%      EMCOR Group, Inc.

JWP Telecommunication Services        Delaware            100%      JWP Telecom, Inc.
Inc.

Standard Telecommunications, Inc.     New York            100%      JWP Telecom, Inc.

Standard Telecommunications           New Jersey          100%      JWP Telecom, Inc.
Equipment Inc.

MEC Constructors, Inc. (formerly      Delaware            100%      EMCOR Group, Inc.
JWP Pacific International, Inc.)

Jamaica Technical Trading Company     Delaware            100%      MEC Constructors, Inc.

JWP Technical Services (C.N.M.I.)     Northern            100%      MEC Constructors, Inc.
Inc.                                  Marianas

JWP Technical Services (Hong Kong     Hong Kong           100%      MEC Constructors, Inc.
Limited)

JWP Technical Services                Singapore           100%      MEC Constructors, Inc.
(Singapore) PTE Ltd.

JWP Thailand Ltd.                     Thailand            100%      MEC Constructors, Inc.

JWP Technical Services of Guam,       Delaware            50%       MEC Constructors, Inc.
Inc.

                                                          50%       University Mechanical
                                                                    & Engineering
                                                                    Contractors, Inc.
</TABLE>





<PAGE>




                                SCHEDULE 7.10

                                 INDEBTEDNESS

(a)   EMCOR Group, Inc. ("EMCOR")

     1.   Indebtedness  evidenced  by the  Series  C Notes  and the  obligations
          existing  under the indenture  pursuant to which such notes are issued
          and the documents executed in connection therewith.

      2.  Note payable to SellCo Corporation in the principal amount of
          $5,464,133.78.

      3.  Note payable to Connecticut Development Authority in the principal
          amount of $180,000.


(b)   EMCOR Penguin Air Conditioning Corp.

      1.  $203,000 owed in connection with Industrial Revenue Bond financing.

(c)   Gibson Electric Co., Inc.

      1.  $74,000 note payable to Pitney Bowes Credit Corp.

(d)   EMCOR Gowan, Inc.

      1.  $808,000 payable under finance lease and purchase money mortgage.

(e)   Heritage Air Systems Limited. (U.K.)

      1.  (pound)237,500 - note bearing interest at 8% payable to Barclays Bank.

(f)   Dynalectric Company

      1.  $32,000 payable under finance leases and purchase money mortgages.

(g)   Comstock Canada, Ltd.

      1.  Canadian $2,000,000 credit facility from Canadian Imperial Bank.
<PAGE>

(h)   U.K. Borrowing Group

     1.   EMCOR (U.K.) Limited,  Drake & Scull Holdings,  Limited, Drake & Scull
          Engineering Limited,  Drake & Scull Airport Services Limited,  Drake &
          Scull  Technical  Services  Ltd.,   DelCommerce   (Contract  Services)
          Limited,  Heritage Air Systems Limited,  Forest Drake & Scull Electric
          Limited,  and JWP Leasing  Limited  (the "UK  Borrowing  Group")  have
          overall  credit  limit of  (pound)17,100,000.  Each  member  of the UK
          Borrowing Group has secured the indebtedness to Barclays Bank by liens
          upon its assets and each member is also jointly and  severally  liable
          under these credit facilities. In addition, each member has guaranteed
          the obligations of each other member.

     2.   The UK borrowing  Group has guaranteed the  obligations of its members
          in respect of bonds issued by Seaboard Surety Company for its members.
          This guarantee is secured by a lien upon the assets of each member.

(i)   University Mechanical & Engineering Contractors, Inc., an Arizona
      Corporation

      1.  $696,000 Mortgage Note.

(j)   Various EMCOR Subsidiaries

      1.  $1,000,000 payable under finance leases and purchase money
          mortgages.

(k)   University Mechanical & Engineering Contractors Inc., a California
      Corporation

      1.  Note payable to former shareholders in the principal amount of
          $608,000.


(l)   Lunar Drake & Scull

     1.   Lunar Drake & Scull is liable in respect of its Performance Guarantees
          of approximately $3,500,000 from the British Bank of the Middle East.


<PAGE>




(m)   Dynalectric Company of Nevada

      1.  $20,000 Mortgage Note.

(n)   Drake & Scull Engineering Ltd. ("D&S")

      (pound)129,000 payable in respect of finance leases.

(o)   Other

      1.  The information contained in Schedule 7.11 and 7.12 is hereby
          incorporated herein by reference thereto.

      2.  Excluded is indebtedness owing by EMCOR to its subsidiaries, by its
          subsidiaries to EMCOR, and by its subsidiaries to its other
          subsidiaries





<PAGE>





                                SCHEDULE 7.11

                                    LIENS

(a)   EMCOR Group, Inc. ("EMCOR")

      1. Lien in favor of Connecticut Development Authority on certain equipment
         and furniture located at EMCOR's offices in Norwalk, CT.
         (Amount Secured - $180,000)

      2. Finance leases secured by property leased (Amount Secured - $100,000)

(b)   EMCOR Penguin Air Conditioning Corp.

      1. Lien on building and related property pursuant to Industrial  Revenue
         Bond financing (Amount Secured - $203,000)

(c)   Gibson Electric Co., Inc.

      1. Finance leases  secured by property  leased and purchase money mortgage
         on property purchased (Amount Secured - $74,000).

(d)   EMCOR Gowan, Inc.

      1. Finance leases  secured by property  leased and purchase money mortgage
         on property purchased (Amount Secured - $808,000).

(e)   Heritage Air Systems Limited (UK) ("Heritage Limited")

      1. (pound)237,500 note secured by all assets.

(f)   Dynalectric Company

      1. Finance leases  secured by property  leased and purchase money mortgage
         on property purchased (Amount Secured - $32,000).


<PAGE>



(g)   Dynalectric Company of Nevada

      1. $20,000 Mortgage Note on a condominium.

(h)   Comstock Canada Ltd. ("Comstock") and EMCOR Canada Ltd. ("EMCOR
      Canada")

      1. Canadian   Imperial  Bank  has  made  available  to  Comstock  a  CDN
         $2,000,000  credit facility.  The indebtedness is secured by accounts
         receivable of Comstock and a deposit  instrument  of U.S.  $1,400,000
         of EMCOR Canada.

(i)   U.K. Borrowing Group
      1. EMCOR (U.K.) Limited,  Drake & Scull Holdings,  Limited,  Drake & Scull
         Engineering  Limited,  Drake & Scull Airport Services Limited,  Drake &
         Scull Technical Services Ltd., DelCommerce (Contract Services) Limited,
         Heritage Air Systems  Limited,  Forest Drake & Scull Electric  Limited,
         and JWP Leasing Limited (the "UK Borrowing  Group") have overall credit
         limit of  (pound)17,100,000.  Each member of the UK Borrowing Group has
         secured the  indebtedness to Barclays Bank by liens upon its assets and
         each member is also  jointly and  severally  liable  under these credit
         facilities.  In addition, each member has guaranteed the obligations of
         each other member.

      2. The UK borrowing Group has guaranteed the obligations of its members in
         respect of bonds  issued by Seaboard  Surety  Company for its  members.
         This guarantee is secured by a lien upon the assets of each member.

(j)   University  Mechanical  &  Engineering  Contractors,  Inc.,  an Arizona
      Corporation

      1. $696,000 Mortgage Note on real estate payable to Bank of America.

(k)   Drake & Scull Engineering Ltd.

      Finance   leases   secured   by   property   leased   (amount   secured  -
      (pound)129,000).

(l)   Various EMCOR Subsidiaries

      1. EMCOR  subsidiaries  have obtained bonds from Seaboard  Surety Company,
         Reliance  Surety  Company and its affiliates  ("Reliance"),  and London
         Guarantee.  The agreements  pursuant to which the bonds were issued and
         will be issued in the  future  provide  that the  subsidiary  for which
         bonds are written  grants liens upon its assets in favor of the bonding
         companies.

         In connection with the above, Reliance has liens upon the assets of Dyn
         Specialty  Contracting,  Inc.,  B&B  Contracting  and  Supply  Company,
         Dynalectric Company,  Dynalectric Company of Nevada, Inc., Contra Costa
         Electric,  Inc. and KDC Inc. and on their outstanding shares of capital
         stock.

         2. Miscellaneous finance leases of approximately $1,000,000.



<PAGE>




                                SCHEDULE 7.12

                 INVESTMENTS, LOANS, ADVANCES AND GUARANTEES

      1.   EMCOR Group, Inc. ("EMCOR" or "Parent") guarantees performance and
           payment bonds of its subsidiaries - existing and future.

      2.   Parent guarantees finance leases of its subsidiaries - existing
           and future.

      3.   University Mechanical Engineering & Contractors Inc., a California
           corporation ("University"), guarantees performance bonds of
           University Mechanical & Engineering Contractors, Inc., an Arizona
           corporation - existing and future.

      4.   EMCOR International, Inc., Comstock Canada Ltd., JWP-NRO Holdings
           Inc. and Parent guarantee various performance and payment bonds of
           Comstock Canada, Ltd. ("Comstock") - existing and future.

      5.   UK Borrowing Group has certain guarantees with respect to its
           members: See Schedules 7.10 and 7.11 - existing and future.

      6.   Barclays  Bank  guaranteed  a bond  issued for the benefit of Drake &
           Scull  Engineering  ("D&S") by Saudi Investment Bank in the amount of
           approximately (pound)152,000. The bond beneficiary is Philip Holtzman
           & Co. Barclays Bank  indemnifies  Saudi Investment Bank in respect of
           this bond and D&S guarantees the Barclays obligation.

      7.   D&S guarantees  indebtedness  under a credit facility between Drake &
           Scull Assarain LLC. and Bank Muscat Al Ahli Al Omani in an amount not
           to exceed 392,000 Rials Omani ($105,000).

      8.   D&S guarantees  indebtedness  under a credit facility between Drake &
           Scull LLC and ABN AMRO Bank in an amount not to exceed 14,000,000 UAE
           Dirhams ($3,820,000).

      9.   EMCOR (UK) Limited guarantees indebtedness under a credit facility
           between NESMA EMCOR Saudi Arabia Ltd. and the Saudi Investment
           Bank in an amount not to exceed 16,500,000 Rials ($4,400,000).

      10.  Drake & Scull Engineering Ltd. guarantees indebtedness under a
           credit facility between Drake & Scull International and ANZ
           Grindlays Bank in an amount not to exceed 13,300,000 UAE Dirhams
           ($3,625,000).

      11.  Parent guarantees performance and payment bonds of Unique
           Construction Company - existing and future.

      12.  Guarantee by Parent of mortgage indebtedness of Erlanger Land Co.
           Inc. to The Prudential Insurance Company of America.  Current
           amount outstanding - $5,552,000.

      13.  Guarantees by Parent of any contract by U.S.A. General Services
           Administration pursuant to Solicitation No. GSC-RESF-B-C-0048-N

      14.  Guarantee by Parent of agreement among Zack Power & Industrial
           Company, Parent and Foster Wheeler Energy Corp.

      15.  Guarantee by Parent of agreement between Parent and George Hyman
           with respect to Jensen Water Treatment Facility for Los Angeles

      16.  Guarantee/Keepwell by Parent with respect to Dynatran Division of
           Dynalectric Company for Virginia Department of Transportation

      17.  Guarantees  dated October 24, 1991 and November 15, 1994 by Parent of
           (i) subcontract  agreement  between PCL  Construction  Group Inc. and
           Comstock  Canada with respect to Royal  Hospital  Project,  Edmonton,
           Canada and (ii)  subcontract  between  Comstock and PCL  Construction
           Group with respect to National Archives of Canada, Gatineau Building,
           Gatineau, Quebec.

      18.  Guarantee/Keepwell by Parent with respect to agreement between
           Wachtel, Duklauer & Fein Inc. ("WDF") and New York City Health and
           Hospitals Corp. ("NYC") relating to Kings County Hospital Power
           Plant modernization

      19.  Guarantee/Keepwell by Parent with respect to agreement between WDF
           and NYC relating to Bellevue Hospital Center Emergency Room
           Renovation

      20.  Guarantee/Keepwell by Parent with respect to agreement between
           Dynalectric Company and State of Utah

      21.  Guarantee by Parent of agreement between EMCOR Mechanical of Guam
           Inc. and PACCO Ltd. of Guam

      22.  Parent  letter  agreement  dated August 24, 1992 to Lehrer,  McGowan,
           Bovis  agreeing to insure  that Kerby  Saunders-Warkol,  Inc.,  d/b/a
           EMCOR Mechanical Services will have sufficient financial resources to
           perform  agreements as trade manager for mechanical and plumbing work
           at New York Hospital

      23.  Parent nominal party under agreement dated December 9, 1991 with
           Mannesmann Demag Corporation with respect to LTV project.  EMCOR
           assigned obligation to EMCOR Technical Services of Ohio Inc. but
           Parent remains prime obligor

      24.  Parent guarantee dated May 10, 1991 of agreement ("Costain
           Agreement") between Costain Construction Limited ("Costain") and
           Drake & Scull Engineering Ltd. ("D&S") with respect to development
           at 54 Lombard Street, London

      25.  Parent guarantee dated December 6, 1991 (in favor of Fleetway
           House Construction Management Limited with whom Costain
           contracted) of Costain Agreement

      26.  EMCOR guarantee of warranty between Limeback and D&S with respect
           to 54 Lombard Street, London

      27.  EMCOR guarantee dated April 27, 1990 in favor of Costain with
           respect to ERSB Sellafield

      28.  EMCOR guarantee dated May 7, 1991 of agreement between John Mowlen
           & Co. PLC and D&S with respect to Works Package 330 Mechanical
           Services at CIS Refurbishment, Manchester

      29.  EMCOR guarantee dated January 20, 1991 of agreement between Olympia &
           York Limited Contractors and Olympia & York Canary Wharf Ltd. and D&S
           with respect to Building B1/B2, Mechanical and Plumbing Works

      30.  EMCOR guarantee dated May 1991 of agreement between British Rail
           and D&S with respect to North Pole International


<PAGE>




      31.  EMCOR guarantee dated June 6, 1991 of agreement between Olympia &
           York Canary Wharf Ltd. and Forest Drake Scull Electric Ltd. with
           respect to Building DS-7 Fit Out-Electrical Works for Daily
           Telegraph Offices

      32.  EMCOR guarantee dated June 6, 1991 of agreement between Olympia &
           York Canary Wharf Ltd. and Olympia & York Contractors Ltd. and D&S
           with respect to Canary Wharf Building B1, Texaco Fit Out

      33.  EMCOR guarantee dated June, 1991 of agreement between Olympia &
           York Canary Wharf and D&S, trading as Forest Drake & Scull
           Communications Systems with respect to communication cabling in
           Building DS-7, Job No. 900009 10 99063

      34.  EMCOR guarantee dated May 27, 1991 of agreement between Try
           Construction Ltd. and D&S with respect to BP Research Center,
           Sunbury, Middlesex Building 200

      35.  EMCOR guarantee of agreement between Olympia & York Contractors
           Limited and Olympia & York Canary Wharf Limited and D&S with
           respect to Canary Wharf Building B1/B2, Drake & Scull Engineering
           - Electric Works

      36.  EMCOR guarantee of agreement between Olympia & York Canary Wharf
           Limited and JWP Information Services, Ltd. with respect to
           communications cabling works in Building FC-2, Job Number 900296

      37.  EMCOR guarantee of agreement between Olympia & York Canary Wharf
           Limited and Olympia & York Contractors Ltd. and D&S with respect
           to Building B/1, Small Power & Lighting

      38.  EMCOR guarantee dated October, 1992 of agreement between Amec
           Design & Management Ltd. and D&S with respect to Work Package 360
           for mechanical, electrical and plumbing services at Northwest
           Water Ltd. Central Site, Warrington

      39.  EMCOR guarantee dated February 27, 1992 of agreement between
           Thames Water Utilities Ltd. and D&S with respect to Advance ME&I
           Installment Works, Contract Number 1732/D42

      40.  EMCOR guarantee dated January 14, 1992 of agreement between John
           Lang Construction Ltd. and D&S with respect to Health Care
           International, Glasgow in respect of contract among Amec, D&S and
           Wessex

      41.  Deed of Warranty dated January 31, 1992 between EMCOR and British
           Airways with respect to agreement between Drake & Scull Airport
           Services Ltd. and British Airways

      42.  Comfort  Letter/Guarantee dated January 16, 1990 in favor of Property
           Services Agency in respect of D&S and Drake & Scull Scotland Ltd.

      43.  EMCOR indemnity dated February 22, 1990 in favor of Wessex
           Regional Health Authority in respect of contract between D&S and
           Amec PLC

      44.  EMCOR guarantee of agreement between Forest Drake Scull Electric
           Ltd. and Herbert Construction (U.K.) Ltd. ("Herbert") in respect
           of Forest Drake Scull Ltd. work at Canary Wharf, American Express
           floors

      45.  EMCOR  guarantee of lease  agreement  between IBM RITC 6000  computer
           from Lombard Water North Central PLC.

      46.  Indemnification of trade payables in Nevada for JWP Controls

      47.  Indemnification of trade payables in Nevada for Dynalectric
           Company

      48.  EMCOR has agreed to indemnify Barnett Bank of Central Florida,
           N.A. and Barnett Bank Trust Company, N.A. in respect of certain
           environmental liabilities relating to Sebastian, Florida property.

      49.  Guarantees by EMCOR of obligations of Drake & Scull Engineering
           Co. Limited with respect to London Underground contracts

      50.  The Parent is liable by reason of indemnification agreements or
           reimbursement agreements in respect of the following Letter of
           Credit:

             Bank                                           Party for
        Issuing Letter                      L/C In        Whose Account
      of Credit ("L/C")      Amount        Favor Of        L/C Issued
      -----------------      ------        --------        ----------

    Howard Bank              250,000   State of Vermont      Defender


<PAGE>




      51.  Indemnification obligations to Days Cove Reclamation Company
           ("Days Cove") pursuant to a stock agreement and termination
           agreement to be entered into among JWP Equipment Services Inc.,
           Days Cove and EMCOR with respect to the sale of the stock of JWP
           Environmental Services Inc. to Days Cove

      52.  Indemnification obligations to Barnett Bank of Central Florida,
           N.A. and Barnett Bank Trust Company, N.A. in connection with sale
           of business of JWP/HCCII Corp. (formerly HETRA Computer and
           Communications Industries, Inc.)

      53.  In connection with sales of other subsidiaries'  assets or stock, the
           selling   subsidiaries   and  its  direct  and/or   indirect   parent
           corporations  also have similar  indemnification  obligations  to the
           buyer.

      54.  Indemnification obligations of Parent with respect to surety bonds
           issued by Seaboard, Reliance and London Guarantee.

      55.  Guarantee by Parent of employment arrangement between Drake &
           Scull Engineering Limited and Andrew Gay.

      56.  EMCOR (UK) Guarantee  dated  September 28, 1993 of agreement  between
           D&S and John Mowlem  Construction Ltd. in respect of package 1705 M&E
           Engineering Services at the MOD (PE) Collocation Bristol.

      57.  EMCOR (UK) Guarantee dated December 14, 1993 of agreement between
           D&S and Fleetway House Construction Management Ltd. in respect of
           54 Lombard Street fit out.

      58.  EMCOR (UK) Guarantee dated January 5, 1994 of agreement between
           D&S and British Aerospace Defence Ltd. in respect of Estates
           Services Maintenance of the BAE Defence Ltd., Samlesbury Site.

      59.  EMCOR (UK) Guarantee dated May 29, 1994 of agreement between D&S
           and Fleetway House Construction Management Ltd. in respect of
           facilities management contract at 54 Lombard Street.

      60.  EMCOR (UK) Guarantee dated August 11, 1994 of agreement between
           D&S Higgs & Hill Western Ltd. in respect of Mountstuart Primary
           School.

      61.  EMCOR (UK) Guarantee dated January 13, 1995 of agreement  between D&S
           and The City of Dundee DC in respect of central heating works.

      62.  EMCOR (UK) Guarantee dated January 24, 1995 of agreement between
           D&S and Heathrow Airport Ltd. in respect of mechanical and public
           health services on the Europier Project.

      63.  EMCOR (UK) Guarantee dated February 27, 1995 of agreement between D&S
           and Dundee DC in respect of lighting installation at the Mill O'Mains
           Security Lighting Contract.

      64.  EMCOR (UK)  Guarantee  dated March 17, 1995 of agreement  between D&S
           and North West Water Ltd. in respect of maintenance of electrical and
           mechanical installation of Lingley Mere & Dawson House, Warrington.

      65.  EMCOR (UK) Guarantee dated March 20, 1995 of agreement between D&S
           and EBC Construction Ltd. in respect of electrical installation at
           Lyndhurst Magistrates Court.

      66.  EMCOR (UK) Guarantee dated April 3, 1995 of agreement between D&S and
           City of Dundee DC in  respect of  contract  heating  replacement  for
           Whorterbank low rise development.

      67.  EMCOR (UK) Guarantee dated April 5, 1995 of agreement between D&S and
           GEC Alsthom in respect of mechanical and electrical  installation  at
           Connah's Quay Power Generation Station.

      68.  EMCOR (UK)  Guarantee  dated July 12, 1995 of  agreement  between D&S
           Trafalgar House Construction  (Regions) Ltd. in respect of design and
           installation of mechanical and electrical works at Invicta  Barracks,
           Kent.

      69.  EMCOR (UK) Guarantee dated July 19, 1995 of agreement between D&S
           and Trafalgar House (Regions) Ltd. in respect of mechanical and
           electrical services at Farnborough Hospital.

      70.  EMCOR (UK) Guarantee  dated August 11, 1995 of agreement  between D&S
           and  Trustees  of Victoria & Albert  Museum in respect of  electrical
           works.

      71.  EMCOR (UK) Guarantee dated August 11, 1995 of agreement between
           D&S and Vodafone Ltd. in respect of mobile maintenance service.

      72.  EMCOR (UK) Guarantee dated September 19, 1995 of agreement between
           D&S and Bovis Construction Ltd. in respect of mechanical and
           electrical works at 30 Berkeley Square.

      73.  EMCOR  (UK)  Guarantee  dated  October  4,  1995 in  favor  of  Banco
           Comercial de Macau in support of advance payment guarantee granted in
           connection with Macau International Airport FM Contract.

      74.  EMCOR (UK) Guarantee dated October 12, 1995 of agreement  between D&S
           and Atomic Weapons  Establishment  in respect of maintenance  work at
           Aldermaston facility.

      75.  EMCOR (UK) Guarantee dated October 16, 1995 of agreement between
           D&S and Bard Pharmaceuticals Ltd. in respect of mechanical and
           electrical works at new production facility.

      76.  EMCOR (UK) Guarantee dated October 16, 1995 of agreement  between D&S
           and Amoco (UK) in respect of facilities  management services at Amoco
           head office building.

      77.  EMCOR (UK) Guarantee dated November 7, 1995 of agreement between
           D&S and NG Bailey & Co. Ltd. in respect of mechanical and
           electrical services at HMS Neptune, Faslane.

      78.  EMCOR  (UK)  Guarantee  dated  November  7,  1995 in  favor  of Banco
           Comercial de Macau in respect of mechanical,  electrical and building
           works at Macau International Airport.

      79.  EMCOR (UK) Guarantee dated November 11, 1995 of agreement between D&S
           and The BBC  (Midlands  Region) in respect  of  building  engineering
           services at Pebble Mill.

      80.  EMCOR (UK) Guarantee dated December 5, 1995 of agreement between
           D&S and British Aerospace Defence Ltd. in respect of estate
           service maintenance at Brough Aerodrome.

      81.  EMCOR (UK) Guarantee dated December 21, 1995 of agreement between
           EMCOR-NESMA and United Arab Can Manufacturing Co. in respect of
           electrical work at Damman Can/End Plant.

      82.  EMCOR (UK) Guarantee dated February 21, 1996 of agreement between D&S
           and   British   Gas  Plc  in  respect  of   mechanical   installation
           laboratories at Loughborough.

      83.  D&S Guarantee  dated December 21, 1995 in favor of ANZ Grindlays Bank
           in respect of banking  arrangements for Drake & Scull  International,
           Abu Dhabi.

      84.  D&S  Guarantee  dated  April  18,  1996  of  agreement   between  YDS
           Engineering  Ltd.  and  Gammon-Paul  Y Joint  Venture  in  respect of
           electrical  works at HACTL  Superterminal  1 at Chek Lap Kok Airport,
           Hong Kong.

      85.  D&S  Guarantee  dated  April  18,  1996  of  agreement   between  YDS
           Engineering  Ltd. and  Gammon-Paul Y Joint Venture in respect of HVAC
           installation  and associated  works at HACTL  Superterminal 1 at Chek
           Lap Kok Airport, Hong Kong.

      86.  D&S Guarantee dated April 18, 1996 of Agreement between YDS
           Engineering Ltd. and Hong Kong Air Cargo Terminals Ltd. in respect
           of electrical installation works at HACTL Superterminal 1 at Chek
           Lap Kok Airport, Hong Kong.

      87.  D&S Guarantee dated April 18, 1996 of agreement between YDS
           Engineering Ltd. and Hong Kong Air Cargo Terminals Ltd. in respect
           of HVAC installation works at HACTL Superterminal 1 at Chek Lap
           Kok Airport, Hong Kong.

      88.  D&S Guarantee dated April 22, 1996 in favor of Barduct Ltd. in
           support of special supply terms granted to YDS Engineering Ltd. in
           connection with HACTL Superterminal 1 at Chek Lap Kok Airport,
           Hong Kong.

      89.  D&S Guarantee dated October 23, 1990 of agreement between D&S and
           Mowlem Regional Construction Ltd. in respect of electrical and
           mechanical services to building 459 RAF St. Mawgan, Cornwall.

      90.  D&S Holdings  Guarantee dated February 13, 1991 of agreement  between
           D&S and  Olympia & York  Canary  Wharf Ltd. in respect of under floor
           and high level electrical fitting out works in building DS-7 at phase
           1 of Canary Wharf development.

      91.  D&S Holdings Guarantee dated April 19, 1991 of agreement between
           D&S and Trafalgar House Construction Management Ltd. in respect of
           DS-7 Canary Wharf, London.

      92.  D&S Holdings  Guarantee dated April 19, 1991 of agreement between D&S
           and  Olympia & York  Canary  Wharf  Ltd.  in  respect  of  electrical
           contract at DS-7 Canary Wharf, London.

      93.  D&S Holdings Guarantee dated July 30, 1991 of agreement between
           D&S and Wimpey Construction Ltd. in respect of building services
           at British Telecom, Milton Keynes.

      94.  D&S Holdings  Guarantee  dated  October 2, 1991 of agreement  between
           D&S,  Olympia  & York  Canary  Wharf  Ltd.  in  respect  of  services
           agreement, Phase I fit and for Daily Telegraph.

      95.  D&S Holdings  Guarantee  dated June 6, 1992 of agreement  between D&S
           and Lothian Health Board in respect of  maintenance  work to East and
           Community units.

      96.  D&S Holdings  Guarantee dated July 20, 1992 of agreement  between D&S
           and Lothian  Health  Board in respect of  mechanical  and  electrical
           maintenance at Royal Infirmary and Associated Hospitals.

      97.  D&S Holdings  Guarantee dated December 22, 1992 of agreement  between
           D&S and  Eastern  Telegraph  Company  in respect  of  mechanical  and
           electrical services installation  contract at New  Telecommunications
           College.

      98.  Guarantee by Dynalectric  Company of debts and  obligations of Allied
           Electric in respect of contract  among  Dynalectric  Company,  Allied
           Electric and Memphis IRS Computer Center.

      99.  Guarantee Agreement dated July 17, 1995 of Parent of payment by
           University Mechanical Engineering & Contractors Inc., Superior
           Engineering Corp. of their respective debts and obligations
           arising out of their respective contracting activities in State of
           Utah.

      100. Guarantee Agreement by Parent of D&S Contractors with Hargmead
           Ltd. and Kier Build Ltd. in the nature of a Performance Guarantee.

      101. Guarantee by Parent to Young's Engineering  Holding,  Ltd. ("YEH") to
           indemnify  it in  respect  of 50% of its  indemnification  obligation
           under a Performance Bond in favor of Gammon-Paul Joint Venture ("Main
           Contractor") under contract in which joint venture of YEH and D&S are
           performing work.

      102. Guarantee by Parent of contract between Forest Electric Corp. and
           Turner Construction Company for New York Mercantile Exchange.

      103. University  letter to  Connecticut  General  Life  Insurance  Company
           agreeing to take all steps reasonably within its power to assure that
           University  Cogeneration  Inc.  (i)  continues  to have a minimum net
           worth of at least  $5,000,000  and (ii) applies its  resources to pay
           its debt and other obligations as they become due.

      104. The information contained in Schedules 7.10 and 7.11 is hereby
           incorporated herein by reference.


<PAGE>



                                   SCHEDULE
                        INVESTMENTS, LOANS AND ADVANCES
<TABLE>
<CAPTION>

                                       AMOUNT OF               PAYEE
          INVESTMENTS                 INVESTMENT             OR HOLDER
          -----------                 ----------             ---------
<S><C>                          <C>                     <C>   
   
1. Unique Construction          49% stock interest      Gibson Electric
   Company                      Cost $206,000           Co., Inc.

2  Bonds held for retention     $1,000,000 aggregate    Welsbach Electric
                                 principal amount       Corp.

3. State of Israel Bonds        $60,000 aggregate       Welsbach Electric
                                principal amount        Corp.

4. State of Israel Bonds        $200,000 aggregate      Forest Electric
                                 principal amount       Corp.


5. Morton Hoffman Mortgage      $116,000, unpaid        Forest Electric
   Note                         principal amount        Corp.

6. New York City Bonds held     $638,000 aggregate      Forest Electric
   for retention                principal amount        Corp.

7. Alan Fox Mortgage Note       $466,000                Forest Electric
                                unpaid principal amount Corp.


8. Skyview Co-Op Mortgage       $26,000                 Forest Electric
   Receivable                                           Corp.

9. Joseph DiSanti               $331,000, unpaid        Forest Electric
   Mortgage Note                principal amount, $0    Corp.
                                current book balance

10.Meli Borelli Associates,     $162,000, unpaid        EMCOR Penguin Air
   Inc. Note                    principal amount        Conditioning

11.Note made by Nassau          $61,000, unpaid         Forest Electric
   Street Partnership           principal amount        Corp.


12.Limited Partnership          $113,217 current book   Forest Electric
   Interest in Nassau           balance                 Corp.
   Street Partners

13.Limited Partnership          ($89,575) current book  Forest Electric
   Interest in Astoria          balance                 Corp.
   Studios                                         
  
14.Note made by C. Thomas       $50,000, unpaid         EMCOR
   Taylor                       principal amount, $0
                                current book balance

15.Note made by MI              $76,000 current book    EMCOR Midwest
   Investments                  value
   (Huen), Inc.

16.Riverdale Apartment Co-op    315 Shares              Forest Electric
   Stock                                                Corp.

17.Note made by Hoffman         $125,469 unpaid         Gibson Electric
   Homes                        principal amount,       Co., Inc. and
                                $25,000 current book    Sutter Hill
                                balance                 Industries, Inc.,
                                                        d/b/a
                                                        EMCOR Residential
                                                        Services

18.Contingent Note made by      $923,000 unpaid         University
   Huntington Partners          principal amount        Industries


19.J. DiSanti Concrete Inc.     2,500 shares of         EMCOR
                                preferred stock

</TABLE>


<PAGE>




                                                                  NEWS RELEASE

                                  EXHIBIT 99

FOR IMMEDIATE RELEASE

CONTACT:          Joseph W. Barnett
                        Vice Pres./Communications
                        EMCOR Group, Inc.
                        (203) 849-7812

- ------------------------------------------------------------------------------
                       EMCOR GROUP, INC. INCREASES AND
                   REFINANCES ITS REVOLVING CREDIT FACILITY
- ------------------------------------------------------------------------------

NORWALK,  CONNECTICUT,  June  21,  1996 --  EMCOR  Group,  Inc.  (NASDAQ:  EMCG)
announced  today that is has entered into a credit  agreement  with Harris Trust
and Savings Bank to provide EMCOR with up to a $100,000,000  credit facility for
a three year  period.  Under the terms of the credit  facility,  $50  million of
borrowing capacity is immediately available. The remaining borrowing capacity is
subject to the receipt of additional  commitments  from other banks, an earnings
test and  consents  of  bonding  companies  providing  surety  bonds to  EMCOR's
Canadian and United Kingdom subsidiaries.

All  outstanding   indebtedness   under  EMCOR's  existing  $45  million  credit
facilities was repaid in full, and those agreements were terminated.

Frank T. MacInnis,  Chairman of the Board and President of EMCOR,  stated he was
pleased that the Company was successful in obtaining a long-term credit facility
that will assist the Company in realizing its growth  opportunities  in 1996 and
beyond.

EMCOR Group, Inc. is a worldwide leader in mechanical/electrical  construction
and facilities management services.












- --------
1 Include only quarterly.
2 Designated Foreign Restricted Subsidiaries.



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