SELAS CORP OF AMERICA
10-Q, 1997-10-30
INDUSTRIAL PROCESS FURNACES & OVENS
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                               UNITED STATES
                    SECURITIES AND EXCHANGE COMMISSION
                        WASHINGTON, D. C.  20549

                                FORM 10-Q


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

 FOR THE PERIOD ENDED            SEPTEMBER 30, 1997                   

                                    OR

 ( ) TRANSITION REPORT PURSUANT TO SECTION 13 or 15 (d) OF THE
      SECURITIES EXCHANGE ACT OF 1934


 COMMISSION FILE NUMBER       1-5005                                  


                    SELAS CORPORATION OF AMERICA                      
         (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)


            PENNSYLVANIA                        23-1069060            

 (STATE OR OTHER JURISDICTION OF    (IRS EMPLOYER IDENTIFICATION NO.)
 INCORPORATION OR ORGANIZATION)

          DRESHER, PENNSYLVANIA                     19025             
  (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)        (ZIP CODE)


                            (215) 646-6600                            
             (REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE)


 INDICATE BY CHECK MARK WHETHER THE REGISTRANT (1) HAS FILED ALL REPORTS
 REQUIRED TO BE FILED BY SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT
 OF 1934 DURING THE PRECEDING 12 MONTHS (OR FOR SUCH SHORTER PERIOD THAT THE
 REGISTRANT WAS REQUIRED TO FILE SUCH REPORTS), AND (2) HAS BEEN SUBJECT TO
 SUCH FILING REQUIREMENTS FOR THE PAST 90 DAYS.

                                         (X) YES   ( ) NO

 INDICATE THE NUMBER OF SHARES OUTSTANDING OF EACH OF THE ISSUER'S CLASSES
 OF COMMON STOCK, AS OF THE LATEST PRACTICABLE DATE.


             CLASS                     OUTSTANDING AT OCTOBER 28, 1997 
 COMMON SHARES, $1.00 PAR VALUE      5,577,324 (exclusive of 363,564
                                             treasury shares)


                                    -2-


                      SELAS CORPORATION OF AMERICA


                               I N D E X

                                                            Page
                                                           Number
 PART I - FINANCIAL INFORMATION

       Item 1.  Financial Statements

          Consolidated Balance Sheets as of
          September 30, 1997 and December 31, 1996 . . . . .  3, 4

          Consolidated Statements of Operations for the
          Three Months Ended September 30, 1997
          and 1996   . . . . . . . . . . . . . . . . . . . .  5

          Consolidated Statements of Operations for the 
          Nine Months Ended September 30, 1997 and 1996. . .  6

          Consolidated Statements of Cash Flows
          for the Nine Months Ended September 30,
          1997 and 1996  . . . . . . . . . . . . . . . . . .  7

          Consolidated Statement of Shareholders' Equity 
          for the Nine Months Ended September 30, 1997 . . .  8

          Notes to Consolidated Financial Statements   . . .  9, 10, 11


       Item 2.  Management's Discussion and Analysis of
                Financial Condition and Results of
                Operations   . . . . . . . . . . . . . . . .  12, 13, 14




 PART II - OTHER INFORMATION



       Item 6.  Exhibits and Reports on Form 8-K   . . . . .  15



                                      -3-

                         SELAS CORPORATION OF AMERICA

                         Consolidated Balance Sheets
                                   Assets

                                            September 30,     December 31,
                                               1997              1996
                                            (Unaudited)       (Audited) 
 Current assets

   Cash, including cash equivalents of
     $2,113,000 in 1997 and $7,532,000
     in 1996  . . . . . . . . . . . . . .   $ 3,031,872      $ 8,343,820

   Accounts receivable (including unbilled 
     receivables of $12,073,000 in 1997
     and $7,783,000 in 1996, less allowance 
     for doubtful accounts of $696,000 in 
     1997 and $787,000 in 1996) . . . . .    34,716,632       41,660,153

   Inventories  . . . . . . . . . . . . .     9,605,982        8,433,522

   Deferred income taxes  . . . . . . . .     2,761,010        2,051,580

   Other current assets . . . . . . . . .       537,855          623,169

       Total current assets . . . . . . .    50,653,351       61,112,244


 Investment in unconsolidated affiliate .       535,217          538,278

 Property, plant and equipment

   Land   . . . . . . . . . . . . . . . .     1,050,109        1,118,802
                                    
   Buildings .  . . . . . . . . . . . . .    10,845,569       11,499,609

   Machinery and equipment .  . . . . . .    22,075,945       19,455,946

                                             33,971,623       32,074,357

   Less:  Accumulated depreciation  . . .    16,946,992       15,362,577 

     Net property, plant and equipment  .    17,024,631       16,711,780

 Deferred pension cost. . . . . . . . . .       183,723          225,060

 Excess of cost over net assets of acquired
   subsidiaries less accumulated amortization
   of $1,547,000 and $1,140,000 . . . . .    15,650,643       12,126,709

 Other assets including patents, less 
   amortization . . . . . . . . . . . . .       804,356          448,201

                                            $84,851,921      $91,162,272
                                            ===========      ===========

      See accompanying notes to the consolidated financial statements.


                                        -4-

                           SELAS CORPORATION OF AMERICA

                           Consolidated Balance Sheets
                      Liabilities and Shareholders' Equity

                                            September 30,     December 31,
                                               1997              1996
                                            (Unaudited)       (Audited) 
 Current liabilities

  Notes payable . . . . . . . . . . . . . . $ 1,168,078      $   583,767

  Current maturities of long-term debt  . .   2,620,984        2,271,830

  Accounts payable  . . . . . . . . . . . .  17,717,952       20,169,143

  Federal, state and foreign income taxes .   1,596,587          926,823

  Customers' advance payments on contracts       88,050        4,854,880

  Guarantee obligations and estimated 
   costs of service . . . . . . . . . . .     2,420,313        1,725,690

  Other accrued liabilities . . . . . . .     6,045,597       10,758,185

       Total current liabilities  . . . .    31,657,561       41,290,318

 Long-term debt   . . . . . . . . . . . .     7,696,204        6,836,593

 Pension plan obligation  . . . . . . . .       183,723          225,060

 Other postretirement benefit obligations     4,023,066        4,084,768

 Deferred income taxes. . . . . . . . . .     1,310,444        1,084,057

 Contingencies and commitments 

 Shareholders' equity 

  Common shares, $1 par; 10,000,000 shares
   authorized; 5,577,324 and 5,553,624
   shares issued, respectively. . . . . .     5,577,324        5,553,624

  Additional paid-in capital  . . . . . .    11,740,628       11,660,807

  Retained earnings . . . . . . . . . . .    22,658,007       19,672,731

  Foreign currency translation adjustment       386,901        1,136,251

  Less:  363,564 common shares held in
          treasury, at cost . . . . . . .      (381,937)        (381,937)

       Total shareholders' equity   . . .    39,980,923       37,641,476

                                            $84,851,921      $91,162,272
                                            ===========      ===========

         See accompanying notes to the consolidated financial statements.





                                      -5-

                         SELAS CORPORATION OF AMERICA

                    Consolidated Statements of Operations
                                  (Unaudited)



                                           Three Months Ended      
                                      September 30,     September 30,
                                          1997              1996    

 Sales, net                           $28,328,138       $29,724,295

 Operating costs and expenses
   Cost of sales                       22,852,879        23,740,370
   Selling, general and
     administrative expenses            3,735,121         3,638,310

 Operating income                       1,740,138         2,345,615

 Interest (expense)                      (247,341)         (304,634)
 Interest income                           71,872            84,607
 Other income (expense), net              156,937          (101,680) 

 Income before income taxes             1,721,606         2,023,908

 Income taxes                             582,448           684,031 

 Net income                           $ 1,139,158       $ 1,339,877
                                      ===========       ===========



 Earnings per share

   Primary    
     Income per common and 
     common equivalent share                 $.21              $.25 
                                      ===========       ===========

     Weighted average common
     shares outstanding                 5,374,000         5,277,000

   Fully diluted
     Income per common and 
     common equivalent share                 $.21              $.25 
                                      ===========       ===========

     Weighted average common
     shares outstanding                 5,383,000         5,296,000




     See accompanying notes to the consolidated financial statements.





                                     -6-


                       SELAS CORPORATION OF AMERICA

                  Consolidated Statements of Operations
                                (Unaudited)


                                             Nine Months Ended     
                                      September 30,    September 30,
                                          1997              1996    

 Sales, net                           $86,334,612       $73,755,093

 Operating costs and expenses
   Cost of sales                       67,931,495        57,751,598
   Selling, general and
     administrative expenses           11,632,796        11,065,522

 Operating income                       6,770,321         4,937,973

 Interest (expense)                      (764,952)         (798,871)
 Interest income                          207,360           221,248
 Other income (expense), net             (146,599)          (71,518) 

 Income before income taxes             6,066,130         4,288,832

 Income taxes                           2,385,789         1,567,858 

 Net income                           $ 3,680,341       $ 2,720,974
                                      ===========       ===========
 Earnings per share

   Primary    
     Income per common and 
     common equivalent share                 $.69              $.52 
                                      ===========       ===========

     Weighted average common
     shares outstanding                 5,360,000         5,253,000

   Fully diluted
     Income per common and 
     common equivalent share                 $.68              $.51 
                                      ===========       ===========

     Weighted average common
     shares outstanding                 5,382,000         5,296,000





     See accompanying notes to the consolidated financial statements.



                         SELAS CORPORATION OF AMERICA 
                                     -7-
                    Consolidated Statements of Cash Flows
                                  (Unaudited)
                                               Nine Months Ended    
                                         September 30,   September 30,
                                             1997            1996    
 Cash flows from operating activities:
  Net income . . . . . . . . . . . . .   $ 3,680,341     $ 2,720,974
  Adjustments to reconcile net income to
   net cash provided by operating
    activities:
   Depreciation and amortization . . .     2,608,439       2,105,766
   Equity in (income) loss of unconsoli-
    dated affiliate  . . . . . . . . .        (1,967)         60,010
   (Gain) loss on sale of property and 
    equipment    . . . . . . . . . . .         6,105          (1,240)
   Deferred taxes  . . . . . . . . . .      (508,732)       (404,795)
   Changes in operating assets and liabilities:
    (Increase) decrease in accounts     
     receivable. . . . .  . . . . . . .    3,507,647      (4,108,386)
    (Increase) in inventories . . . . .   (1,674,593)       (883,375)
    (Increase) decrease in other assets     (360,902)        501,480
     Increase in accounts payable . . .      965,971      11,441,656
     Increase (decrease) in accrued 
      expenses  . . . . . . . . . . . .   (2,508,456)      1,880,571
    (Decrease) in customer advances . .   (4,206,834)     (1,391,912)
    (Decrease) in other liabilities . .      (10,653)        (27,292)
        Net cash provided by 
        operating activities  . . . . .    1,496,366      11,893,457
 Cash flows from investing activities:
  Purchases of property, plant and 
   equipment  . . . . . . . . . . . . .   (2,592,533)     (1,670,308)
  Proceeds from sale of property, plant
   and equipment .  . . . . . . . . . .        8,052          35,912
  Purchase of long term investment  . .         --            16,742
  Acquisition of subsidiary company,
   net of cash acquired . . . . . . . .   (5,151,620)           --  
        Net cash (used) by investing 
        activities    . . . . . . . . .   (7,736,101)     (1,617,654)
 Cash flows from financing activities:
  Proceeds from short-term bank 
   borrowings                                670,119            --
  Proceeds from long-term borrowings         176,793            --
  Proceeds from borrowings to acquire
   subsidiary company . . . . . . . . .    3,500,000            --
  Repayments of short-term bank 
   borrowings . . . . . . . . . . . . .       (7,404)     (1,329,248)
  Repayments of long-term debt  . . . .   (2,192,339)     (1,629,974)
  Proceeds from exercise of stock 
   options  . . . . . . . . . . . . . .       91,269            --
  Payment of dividends  . . . . . . . .     (695,065)       (622,808)
        Net cash provided (used) by  
        financing facilities  . . . . .    1,543,373      (3,582,030)
 Effect of exchange rate changes on 
  cash  . . . . . . . . . . . . . . . .     (615,586)       (180,613)
 Net increase (decrease) in cash and
  cash equivalents  . . . . . . . . . .   (5,311,948)      6,513,160
 Cash and cash equivalents, beginning of
  period  . . . . . . . . . . . . . . .    8,343,820       3,912,364
 Cash and cash equivalents, end of 
  period  . . . . . . . . . . . . . . .  $ 3,031,872     $10,425,524
                                         ===========     ===========


                                        -8-

                           SELAS CORPORATION OF AMERICA

                    Consolidated Statement of Shareholders' Equity
                         Nine Months Ended September 30, 1997     
                                    (Unaudited)

                                   Common Stock              Additional
                              Number of                       Paid-In
                               Shares          Amount         Capital   

 Balance, January 1, 1997     5,553,624      $5,553,624     $11,660,807
 Net income
 Exercise of stock options       23,700          23,700          79,821
 Cash dividends paid
   ($.135 per share)
 Translation (loss)                                                    

 Balance, September 30, 1997  5,577,324      $5,577,324     $11,740,628
                               =========      ==========     ===========


                                               Foreign
                                               Currency
                                Retained     Translation
                                Earnings      Adjustment


 Balance, January 1, 1997     $19,672,731    $1,136,251    
 Net income                     3,680,341
 Exercise of stock options
 Cash dividends paid
   ($.135 per share)             (695,065)              
 Translation (loss)                            (749,350)

 Balance, September 30, 1997  $22,658,007    $  386,901
                               ==========     ==========

                                                Total
                                 Treasury    Shareholders'
                                  Stock         Equity  

 Balance, January 1, 1997     $  (381,937)   $37,641,476
 Net income                                    3,680,341
 Exercise of stock options                       103,521
 Cash dividends paid
   ($.135 per share)                            (695,065) 
 Translation (loss)                             (749,350)

 Balance,  September 30, 1997 $  (381,937)   $39,980,923
                               ==========     ==========


  (See accompanying notes to the consolidated financial statements)


                                        -9-

                           SELAS CORPORATION OF AMERICA

                          PART I - FINANCIAL INFORMATION


 ITEM 1.  Notes to Consolidated Financial Statements (Unaudited)

 1.  In the  opinion of management, the  accompanying consolidated condensed
     financial  statements  contain all  adjustments  (consisting of  normal
     recurring adjustments) necessary to present fairly Selas Corporation of
     America's consolidated financial position as of  September 30, 1997 and
     December 31, 1996, and  the consolidated results of its  operations for
     the  three  and nine  months  ended  September 30,  1997  and  1996 and
     consolidated statements of  shareholders' equity and cash flows for the
     nine months then ended.

 2.  The accounting policies followed by the Company are set forth in note 1
     to  the Company's financial statements in the 1996 Selas Corporation of
     America Annual Report.

 3.  Inventories consist of the following:

                                       September 30,   December 31,
                                            1997            1996    

        Raw material                    $2,966,021      $2,601,927
        Work-in-process                  2,080,850       1,749,371
        Finished products and
          components                     4,559,111       4,082,224

                      Total             $9,605,982      $8,433,522
                                        ==========      ==========
 4.    Income Taxes

       Consolidated income taxes for the nine month periods ended  September
       30,  1997  and 1996  are $2,386,000  and  $1,568,000 which  result in
       effective tax rates of  39.3% and 36.6%,  respectively.  The rate  of
       tax in  relation to pre-tax income  in 1997 has been  impacted by the
       settlement   of  a  tax  issue  at  one  of  the  Company's  European
       subsidiaries in the amount of approximately $80,000.

 5.    Legal Proceedings

       The Company  is a defendant along  with a number of  other parties in
       approximately  155  lawsuits  as of  December  31,  1996  (112 as  of
       December  31,  1995)  alleging  that  plaintiffs  have  or  may  have
       contracted  asbestos-related  diseases as  a  result  of exposure  to
       asbestos products  or equipment  containing asbestos  sold by  one or
       more  named  defendants.   Due to  the  noninformative nature  of the
       complaints, the Company does  not know whether any of  the complaints
       state valid claims against the  Company.  The Company is also  one of
       approximately  500  defendants   in  a  class  action  on  behalf  of
       approximately  2700 present or former employees of a Texas steel mill
       alleging that products supplied by the defendants created a poisonous
       atmosphere that caused unspecified physical harm.  These 



                                  -10-

             SELAS CORPORATION OF AMERICA

                    PART I - FINANCIAL INFORMATION

 ITEM 1.  Notes to Consolidated Financial Statements (Unaudited)-
             (Continued)

 5.    Legal Proceedings - (Continued)

       cases  are being defended by one or  more of the Company's  insurance
       carriers presently known to  be "at risk."  Through October 1993, the
       legal costs  of defense  of the  asbestos and  steel mill  cases were
       shared among the insurance carriers (92%) and the  Company (8%).  The
       lead  insurance carrier  settled a number  of the  cases in  1993 and
       requested  that the Company pay  a portion of  the settlement amount.
       The Company declined to do so because no such payment  is required by
       the express terms  of the policies.  The lead  carrier then purported
       in October 1993 to  abrogate the arrangement under which  the defense
       costs had been shared, and the Company responded by  tendering all of
       the  cases to the  lead carrier and  demanding that the  lead carrier
       honor its  obligations under its policies to pay 100% of the costs of
       defense and 100% of  all settlements and judgments  up to the  policy
       limits.  The lead carrier has settled approximately 17 and 98  claims
       in  1996 and 1995,  respectively, with no request  for the Company to
       participate in any  settlement.    The lead carrier has  informed the
       Company that the primary policy for the period July 1, 1972 - July 1,
       1975  has been  exhausted and  that the  lead carrier will  no longer
       provide a defense under that policy.   The Company has requested that
       the  lead  carrier substantiate  this  situation.   The  Company  has
       contacted representatives of the  Company's excess insurance  carrier
       for some or  all of this period.   The Company does  not believe that
       the asserted  exhaustion of the  primary insurance coverage  for this
       period  will  have  a  material   adverse  effect  on  the  financial
       condition, liquidity, or results of operations of the Company.

       In 1995, a dispute which was submitted to arbitration, arose  under a
       contract  between  a  customer  and  a  subsidiary  of  the  Company.
       Substantial claims were asserted against the subsidiary Company under
       the  terms  of  the  contract.    The  Company  recorded  revenue  of
       approximately $1,400,000 in 1994 and has a current billed  receivable
       of $140,000.

       The Company  is also involved in other lawsuits arising in the normal
       course  of  business.   While  it  is  not possible  to  predict with
       certainty  the outcome of these matters, management is of the opinion
       that the disposition of these lawsuits and claims will not materially
       affect the  Company's consolidated financial  position, liquidity, or
       results of operations.


                                  -11-

             SELAS CORPORATION OF AMERICA

                    PART I - FINANCIAL INFORMATION

 ITEM 1.  Notes to Consolidated Financial Statements (Unaudited)-
          (Continued)

 6. Statements of Cash Flows

    Supplemental disclosures of cash flow information:

                                               Nine Months Ended      
                                         September 30,    September 30,
                                            1997              1996    

      Interest received . . . . . . .    $  176,480       $  165,042
      Interest paid . . . . . . . . .    $  660,870       $  452,139
      Income taxes paid . . . . . . .    $1,469,521       $  864,387

 7. Accounts Receivable

    At  September 30,  1997, the  Company had  $1,667,620 of  trade accounts
    receivable  due  from  the   major  U.S.  automotive  manufacturers  and
    $2,713,324   of  trade   accounts  receivable   due  from   hearing  aid
    manufacturers.   The Company  also had  $21,356,756 in  receivables from
    long-term  contracts  for  customers  in  the steel  industry  in  North
    America, Europe and Asia.

 8. Earnings Per Common and Common Equivalent Share

    Earnings  per common and common  equivalent share are  computed based on
    the weighted  average number of shares outstanding  each quarter, giving
    effect to the exercise of outstanding stock options, where dilutive.

    On April 22, 1997, the Board of Directors declared a three-for-two stock
    split of  the  Company's  outstanding  common stock  pursuant  to  which
    1,851,213 shares were issued.  Shareholders  of record on June 10,  1997
    received one  additional share for  every two  common shares held.   The
    effect of this transaction  was to reduce additional paid-in  capital by
    $1,851,213  with a corresponding increase in common stock which has been
    retroactively recorded.  All common and earnings per share data in these
    financial statements and footnotes has been retroactively recorded.




                                   -12


                      SELAS CORPORATION OF AMERICA

                     PART I - FINANCIAL INFORMATION


 ITEM 2:  Management's Discussion and Analysis of Financial Condition
          and Results of Operations                                 

 Consolidated  net sales for the  three and nine  months ended September 30,
 1997 declined  to $28.3 million from  $29.7 million for the  same period in
 1996.   Consolidated sales  for the  nine months  ended September  30, 1997
 increased to $86.3 million compared to $73.8 million for the same period in
 1996.  Net sales for the heat processing segment decreased to $16.4 million
 for the quarter ended September  30, 1997 and increased to $51  million for
 the nine  months ended  September 30,  1997 compared  to $19.7 million  and
 $43.4  million for  the  same periods  in 1996.   The  lower sales  for the
 current quarter are due to the fact that several large engineered contracts
 are nearing completion and the negative impact  of  a stronger  U.S. dollar 
 on  the Company's  foreign operations. Higher sales for the  nine months are
 due to progress made on several large engineered contracts  in the first
 half of  1997, partially offset  by the impact of the  stronger U.S. dollar
 on the Company's foreign  operations. Sales and earnings of large engineered
 system's contracts are recognized on a percentage-of-completion  method. 
 Such contracts  generally require more than twelve months to complete.  The
 sales backlog for the heat processing segment at September 30, 1997 is
 $16.9 million compared to $57.7 million at September  30, 1996.   Net  sales
 for  the precision  electromechanical and plastics  component segment
 increased to $8.6 million and $24.6 million for the three  and nine month
 periods ended September 30, 1997 compared to $6.8 million and  $20.3 million
 for the  same periods in 1996.   The increase is primarily  due  to the
 acquisition in  February,  1997 of  RTI Electronics (formerly Rodan Division
 of Ketema) which accounted for the majority of the increase as  its sales
 were $1.7  million and $4.1 million  for the three and  nine month periods
 in 1997.  Net sales for the tire holders, lifts and related products'
 segment increased  to $3.3 million and $10.7  million for the three and nine
 months ended September 30, 1997 compared to $3.2 million and $10 million for
 the same periods in 1996, due to higher tire lift sales to the Company's
 automotive customers.
 The  Company's gross  profit margin  as a percentage-of-sales  decreased to
 19.3% and  21.4% for the three  and nine month periods  ended September 30,
 1997 compared  to 20.1% and  21.7% for  the same  periods in  1996.   Gross
 profit  margins for  the Company's  heat processing  segment for  the three
 months ended  September 30, 1997 decreased to 11.7% from 14.2% for the same
 period  in 1996 and increased to 15.6%  for the nine months ended September
 30, 1997  from 15.2% for the  same period in  1996.  The  current quarter's
 gross profit  margins were impacted by  higher costs on a  contract that is
 nearing  completion.  Gross profit  margins in the  heat processing segment
 vary   markedly  from   contract   to  contract,   depending  on   customer
 specifications and 





                                   -13

                      SELAS CORPORATION OF AMERICA

                     PART I - FINANCIAL INFORMATION

 ITEM 2:  Management's Discussion and Analysis of Financial Condition
          and Results of Operations (Continued)                     

 other conditions  related to the  contract.   Gross profit margins  for the
 precision  electromechanical and  plastics  component segment  decreased to
 35.3% and  35.7% for  the three  and nine months  ended September  30, 1997
 compared to 40.3% and 39.9% for the same periods in 1996.   The decrease in
 gross profit margins is due to a shift in  the mix of products sold by this
 segment in 1997  that carry  lower gross profit  margins than the  products
 sold  in  1996.   This  is  driven  by  the  February  acquisition  of  RTI
 Electronics  whose  gross profit  margins  are  lower  than  the  segment's
 historical  gross profit margins and to a lesser degree by a shift in the
 mix of products being sold to hearing aid manufacturers due to an increase
 in market demand for programmable hearing aids. Gross profit margins  for
 the Company's
 tire  holder, lifts and related products segment increased to 15% and 16.2%
 for the three and  nine months ended September 30, 1997  from 13.8% and 13%
 for the same periods in  1996.  The higher gross profit margins  are due to
 increased units sold and improved manufacturing efficiencies.

 Selling, general and administrative expenses  increased to $3.7 million and
 $11.6 million for the  three month and nine  month periods ended  September
 30, 1997 compared to $3.6 million and $11.1 million for the same periods in
 1996.   The  increase is  due  to the  February,  1997 acquisition  of  RTI
 Electronics, as their  expenses for the  quarter were $.2  million and  $.5
 million for the three and nine month periods ended September 30, 1997.

 Interest income  for the  three and  nine months  ended September  30, 1997
 decreased to $72,000 and $207,000 compared to  $85,000 and $221,000 for the
 same  periods  in 1996.   Interest  expense for  the  three and  nine month
 periods  ended  September  30,  1997  decreased to  $247,000  and  $765,000
 compared to  $305,000 and $798,000 due  to lower borrowings  in the current
 year.  

 Other  income (expense) includes foreign exchange gain for the three months
 ended September 30, 1997 of $161,000 and  a loss for the nine months  ended
 September 30, 1997 of $68,000 compared to losses of $46,000 and $17,000 for
 the same periods in 1996.

 Consolidated  income taxes for the  nine month periods  ended September 30,
 1997  and 1996 are $2,386,000 and  $1,568,000 which result in effective tax
 rates of 39.3%  and 36.6%, respectively.   The rate  of tax in  relation to
 pre-tax income in 1997  has been impacted by the settlement  of a tax issue
 at   one  of  the  Company's   European  subsidiaries  in   the  amount  of
 approximately $80,000.




                                  -14


                      SELAS CORPORATION OF AMERICA

                     PART I - FINANCIAL INFORMATION


 ITEM 2:  Management's Discussion and Analysis of Financial Condition
          and Results of Operations (Continued)                     

 Consolidated  net  income  for the  three  and  nine  months periods  ended
 September  30, 1997 is $1,139,000 and $3,680,000 compared to $1,340,000 and
 $2,721,000  for  the same  periods in  1996.   The  lower earnings  for the
 current quarter are due to lower sales and lower gross profit margins.  The
 higher  nine months  earnings are due  to higher sales,  slightly offset by
 lower gross profit margins.

 In February 1997, the Financial Accounting Standards Board issued Statement
 128,  "Earnings Per Share",  and Statement 129,  "Disclosure of Information
 about Capital Structure",  whose provisions are  effective for the  Company
 for  fiscal  years ending  after  December  15,  1997.    Had  the  Company
 determined earnings per share based on  the provisions of Statement 128 for
 the three and nine months ended September 30, 1997, the  results would have
 been presented as indicated below:

                                      Three Months      Nine Months
                                         Ended             Ended
                                      September 30,     September 30,
                                         1997              1997     

 Earnings per common share              $ .22             $ .71
 Earnings per common share
   assuming dilution                    $ .21             $ .69

 Liquidity and Capital Resources

 Consolidated  net working  capital decreased  to $19  million for  the nine
 months ended September 30,  1997 from $19.8 million  at December 31,  1996.
 The decrease is due primarily to  the acquisition of RTIE in February, 1997
 and the  payment of dividends, partially offset by the net earnings for the
 nine months ended September 30, 1997.  The major changes  in the components
 of working capital  are lower  current liabilities of  $9.6 million,  lower
 receivables of $7  million, lower cash balances of $5.3 million, and higher
 inventories of $1.2 million.

 In September the Company announced an agreement to acquire MRL Industries,
 Sonora, California, for $16,750,000 in Selas stock which is intended to be
 accounted for as a pooling of interest and is subject to completion of
 due diligence and the approval of the Company's shareholders.

 The Company  believes that its  present working capital  position, combined
 with  funds  expected to  be generated  from  operations and  the available
 borrowings  capacity through its revolving credit  loan facilities, will be
 sufficient  to meet its  anticipated cash requirements  for operating needs
 and capital expenditures for 1997.






                                   -15-


                     SELAS CORPORATION OF AMERICA

                      PART II - OTHER INFORMATION





 ITEM 6.  Exhibits and Reports on Form 8-K

 (a)        The following Exhibit is filed as part of this report.

            10K.  Agreement and Plan of Acquisition dated as of September 25, 
                  1997 by and among the Company, Selas Acquisition Corporation,
                  NII, Incorporated, Widmar, Inc. and certain shareholders of
                  NII and Widmar, Inc. and certain shareholders of NII and
                  Widmar, together with Exhibit A thereto, the form of the
                  Agreement and Plan of Merger among the Company, Selas
                  Acquisition Corporation and NII, Incorporated.
                
 (b)        Reports on  Form 8-K - The  Company did not file  any reports on
            Form 8-K during the quarter for which this report is filed. 






                       SELAS CORPORATION OF AMERICA


                               SIGNATURE









 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 thereunto duly authorized.


                                     SELAS CORPORATION OF AMERICA
                                          (Registrant)



 Date:  October 29, 1997                  Robert W. Ross  
                                       Vice President and CFO
                                     





                                               EXHIBIT





                         AGREEMENT AND PLAN OF MERGER

                        DATED AS OF ____________, 1997

                                 BY AND AMONG


                        SELAS CORPORATION OF AMERICA,

                        SELAS ACQUISITION CORPORATION

                                     AND

                              NII, INCORPORATED












                         AGREEMENT AND PLAN OF MERGER


                                     THIS AGREEMENT AND PLAN OF  MERGER (the
 "Agreement")  is dated  as of                   , 1997  by and  among SELAS
 CORPORATION  OF  AMERICA,  a  Pennsylvania  corporation  ("Parent"),  SELAS
 ACQUISITION CORPORATION, a California  corporation ("Merger Sub"), and NII,
 INCORPORATED, a California  corporation ("NII").   Merger Sub  and NII  are
 hereinafter   sometimes  collectively  referred   to  as  the  "Constituent
 Corporations."  Parent is  a party to this  Agreement as a third  party and
 not as a Constituent Corporation.


                                  Background

                                     Merger  Sub  is   a  corporation   duly
 organized and validly existing under  the laws of the State of  California.
 The authorized  capital stock of Merger Sub  consists of 100 Common Shares,
 no par value ("Merger Sub  Common Shares"), all of which shares  are issued
 and  outstanding  as of  the  date  hereof and  owned  by  Widmar, Inc.,  a
 California corporation and wholly-owned subsidiary of Parent ("Widmar").
 NII is a corporation duly organized and validly existing under the laws of
 the State of California.  The authorized capital stock  of NII consists of
 100,000,000 Common Shares,  no par value ("NII Common Shares"), of  which,
 as of the  date hereof, [28,586,067]  NII Common Shares are issued and
 outstanding.

                                     The  parties  hereto are  entering into
 this  Agreement in  order to  set  forth the  terms and  conditions of  the
 proposed merger of  Merger Sub into NII  (the "Merger"), the  amendments to
 the articles of incorporation  of the surviving corporation to  be effected
 by the Merger, the  mode of carrying the Merger into effect,  the manner of
 converting the outstanding NII  Common Shares and Merger Sub  Common Shares
 and  related  matters.     The  parties   hereto,  together  with   certain
 shareholders of NII, have executed  and delivered an Agreement and  Plan of
 Acquisition  dated as of September    , 1997 (the "Acquisition Agreement"),
 setting forth certain representations, warranties, covenants and agreements
 with respect to the Merger and related transactions.

                                     The respective Boards of  Directors and
 shareholders of Merger  Sub and NII, and the Board  of Directors of Parent,
 by resolutions duly adopted, have approved and adopted this Agreement.  The
 shareholders of Parent have  approved the transactions contemplated  by the
 Acquisition Agreement,  including, without limitation, the  issuance of the
 Common Shares, par  value $1 per share, of  Parent ("Parent Common Shares")
 to be issued in connection with the Merger.

                                    NOW, THEREFORE, in consideration of the
 foregoing  and the  respective  representations, warranties,  covenants and
 agreements set forth herein  and in the Acquisition Agreement,  the parties
 hereto, intending to be legally bound, hereby agree as follows:


                                  ARTICLE I

                                 DEFINITIONS

  A.        Definitions.   Capitalized terms  not  otherwise defined  herein
 shall have the meanings  ascribed thereto in the Acquisition Agreement.  As
 used herein, the following terms shall have the following meanings:

                                     "ACQUISITION AGREEMENT"  shall have the
 meaning set forth in the Background section hereof.

                                     "AGGREGATE SELAS SHARES" means a number
 of Parent  Common Shares equal  to the  lesser of (x)  a quotient equal  to
 $16,750,000 divided by the Average Share Price and (y) 1,675,000; provided,
 however, that if  Parent exercises the Selas Option  (as defined in Section
 6.10  of the  Acquisition Agreement),  the Aggregate  Selas Shares  means a
 number of Parent  Common Shares  equal to a  quotient equal to  $16,750,000
 divided by the Average Share Price.  If between the first date that is used
 in  calculating the Average  Share Price and the  Effective Time the issued
 and  outstanding  Parent  Common Shares  shall  have  been  changed into  a
 different number of or class of shares as the result of a stock dividend, a
 stock split,  a reverse split, recapitalization,  reclassification or other
 similar  change  in capitalization  of Parent  without  the receipt  of any
 consideration  by Parent  (such  event, a  "Parent Recapitalization"),  the
 Aggregate Selas  Shares shall  be appropriately  adjusted  to reflect  such
 stock  dividend,  subdivision,  reclassification, recapitalization,  split,
 combination or exchange.

                                     "AVERAGE SHARE PRICE" means the average
 of  the daily  closing prices  per share  of Parent  Common Shares  for the
 fifteen trading  days ending seven trading days  prior to the Closing Date.
 The closing price for  each day shall be the last sale  price, regular way,
 or,  in case  no such  sale takes  place on  such day,  the average  of the
 closing bid  and asked prices, regular  way, in either case  as reported in
 the  principal consolidated  transaction reporting  system with  respect to
 securities listed or admitted to trading on the American Stock Exchange. 




                                     "CGCL" shall have the meaning set forth
 in Section 2.1.

                                     "DISSENTING  SHAREHOLDERS"  shall  have
 the meaning set forth in Section 4.2(a) hereof.

                                     "DISSENTING  SHARES"   shall  have  the
 meaning set forth in Section 4.2(a) hereof.

                                     "EFFECTIVE TIME" shall have the meaning
 set forth in Section 2.3 hereof.

                                     "EXCHANGE RATIO" shall mean  a fraction
 whose  numerator equals  the Non-Widmar Percentage  of the  Aggregate Selas
 Shares  and whose denominator equals  the number of  issued and outstanding
 NII Common  Shares immediately prior to  the Effective Time other  than NII
 Common Shares owned immediately prior to the Effective Time by Widmar.

                                     "MCENTIRE"   shall   mean  William   D.
 McEntire.

                                     "MERGER SUB COMMON  SHARES" shall  have
 the meaning set forth in the Background section hereof.

                                     "MERGER"  shall  have  the meaning  set
 forth in the Background section hereof.

                                     "NII  COMMON  SHARES"  shall  have  the
 meaning set forth in the Background Section hereof.

                                     "NON-WIDMAR  PERCENTAGE"  shall mean  a
 percentage  equal to the percentage of the aggregate outstanding NII Common
 Shares immediately prior to  the Effective Time that are  owned immediately
 prior to the Effective Time by holders other than Widmar.

                                     "PARENT  RECAPITALIZATION"  shall  have
 the meaning set forth in the definition of Aggregate Selas Shares above.

                                     "SURVIVING CORPORATION"  shall have the
 meaning set forth in Section 2.1 hereof.





                                                             ARTICLE II

                                                             THE MERGER

            B.                       Merger  of Merger  Sub  into NII.    In
            accordance   with  the   provisions  of   this  Agreement,   the
            Acquisition Agreement  and  the California  General  Corporation
            Law,  as amended (the "CGCL"), at the Effective Time, Merger Sub
            shall be merged with  and into NII, which shall be the surviving
            corporation (hereinafter sometimes referred to as the "Surviving
            Corporation").     After  the  Effective  Time,   the  Surviving
            Corporation  shall   continue  its  corporate   existence  as  a
            California  corporation.   At the  Effective Time,  the separate
            existence of Merger Sub shall cease.

            C.                       Effect of the Merger.  At the Effective
            Time,  the effect  of the  Merger  shall be  as provided  in the
            applicable  provisions  of  the  CGCL.    Without  limiting  the
            generality  of  the foregoing,  and subject  thereto and  to the
            Acquisition  Agreement, at the Effective Time,  except as may be
            otherwise  provided  herein,  the  Surviving  Corporation  shall
            succeed,  without  other  transfer,  to  all  property,  rights,
            privileges, powers and franchises of  Merger Sub, and all debts,
            liabilities  and duties of  Merger Sub  shall become  the debts,
            liabilities and duties  of the Surviving  Corporation as if  the
            Surviving Corporation had itself incurred them.

            D.                       Effective  Time.    The   Merger  shall
            become  effective upon the filing with the Secretary of State of
            the State of  California of  a copy of  this Agreement with  the
            officers'  certificates required  by  Section 1103  of the  CGCL
            attached thereto (the "Effective Time").

                                                  ARTICLE III.

                            SURVIVING CORPORATION

            E.                       Articles  of  Incorporation.   From and
            after  the Effective Time  and until amended  in accordance with
            the  CGCL, the articles of incorporation of Merger Sub in effect
            immediately prior to the  Effective Time shall be amended  as of
            the  Effective  Time  so that  Article  I  of  such articles  of
            incorporation  reads in its entirety  as follows:   "The name of
            the  corporation  is  __________."  and,  as  so  amended,  such
            articles of incorporation shall be the articles of incorporation
            of the Surviving Corporation.




            F.                       Bylaws.   From and  after the Effective
            Time  and until amended in the manner  provided in the bylaws of
            Merger Sub  and the  CGCL, the  bylaws of  Merger Sub  in effect
            immediately prior to the  Effective Time shall be the  bylaws of
            the Surviving Corporation.

            G.         Directors and Officers.

            a.                       The  directors  of  Merger Sub  at  the
            Effective Time shall be the  initial directors of the  Surviving
            Corporation after the Effective Time and shall hold office  from
            the Effective  Time until  their respective successors  are duly
            elected or appointed and  qualify in the manner provided  in the
            articles   of  incorporation   and  bylaws   of  the   Surviving
            Corporation or as otherwise provided by law.

            b.                       The  officers of  NII at  the Effective
            Time shall be the initial  officers of the Surviving Corporation
            after  the  Effective  Time  and  shall  hold  office  from  the
            Effective  Time  until  their  respective  successors  are  duly
            elected or appointed and  qualify in the manner provided  in the
            articles  of   incorporation  and   bylaws   of  the   Surviving
            Corporation or as otherwise provided by law.


                                                     ARTICLE IV

           CONVERSION OF SHARES; EXCHANGE OF CERTIFICATES

            H.                       Conversion  of NII  Common Shares.   At
            the  Effective Time,  by virtue  of the  Merger and  without any
            action on the part of Parent,  Merger Sub, NII or the holders of
            NII Common Shares:

            a.                       Each issued and outstanding  Merger Sub
            Common  Share shall  be converted  into  and become  one validly
            issued, fully paid  and nonassessable Common Share, no par value
            per share, of the Surviving Corporation.

            b.                       Each NII  Common Share that is (i) held
            in the treasury  of NII, (ii) owned by any  subsidiary of NII or
            (ii) owned  by Parent  or any  subsidiary of  Parent (including,
            without  limitation,  Widmar)  or  NII  shall  automatically  be
            cancelled  and retired and shall  cease to exist,  and no Parent
            Common  Shares  or other  consideration  shall  be delivered  or
            exchanged therefor.




 c.         Subject  to  Section 4.4(c),  each  issued  and outstanding  NII
 Common Share (excluding Dissenting  Shares and NII Common  Shares described
 in  Section 4.1(b))  shall be  converted into  a number  of fully  paid and
 nonassessable Parent  Common Shares equal to the Exchange Ratio.  As of the
 Effective Time, all such NII  Common Shares shall no longer  be outstanding
 and  shall automatically be cancelled and retired  and shall cease to exist
 and each holder  of a certificate which immediately prior  to the Effective
 Time represented any such NII Common Shares shall cease to  have any rights
 with respect thereto, except the right to receive Parent Common Shares (and
 any cash  in lieu of fractional  Parent Common Shares) into  which such NII
 Common  Shares  were  converted  upon  surrender  of  such  certificate  in
 accordance with Section 4.3, without interest.  

 I.         Dissenting Shareholders.

 a.         Any NII  Common Shares for which  the holder thereof  has, as of
 the Effective Time, asserted or preserved, and not effectively withdrawn or
 otherwise  lost,  his dissenters'  rights pursuant  to  the CGCL  (all such
 holders, collectively,  the "Dissenting Shareholders" and  all such shares,
 the "Dissenting  Shares") shall not be converted  into the right to receive
 the  consideration   described  in  Section  4.1(c),   but  the  Dissenting
 Shareholders shall be  entitled to payment of  the value of  the Dissenting
 Shares  in accordance with the  provisions of the  CGCL; provided, however,
 that  if, after  the Effective  Time, any  Dissenting Shareholder  fails to
 perfect  or otherwise  loses any  such dissenters'  rights pursuant  to the
 CGCL,  any such Dissenting Shareholder shall forfeit the right to appraisal
 of  such Dissenting Shares, and  such Dissenting Shares  shall thereupon be
 deemed to have been converted into and to have been exchangeable for, as of
 the Effective Time,  the right  to receive the  consideration described  in
 Section  4.1(c) hereof, without any interest,  unless otherwise required by
 law.

 b.         NII  shall  give prompt  notice to  Parent  with respect  to any
 preservation  or assertion of  rights under the  CGCL by any  holder of NII
 Common Shares.   NII shall not,  except with the  prior written consent  of
 Parent, voluntarily make any payment with respect to, or settle or offer to
 settle, any rights of any Dissenting Shareholder.




 J.         Surrender of Certificates.

 a.         At  the Effective  Time, the  Representative shall  surrender to
 Parent  certificates   that  immediately   prior  to  the   Effective  Time
 represented all of the then issued and outstanding NII Common Shares (other
 than Dissenting  Shares).   Parent shall  mark  all certificates  delivered
 pursuant  to this Section 4.3(a)  to indicate their  cancellation and shall
 promptly  thereafter  deliver the  same  to the  Surviving  Corporation for
 disposal.   The  holder  of  a  certificate  that  represented  issued  and
 outstanding NII Common Shares immediately prior to the Effective Time shall
 have no rights  after the Effective  Time with respect  to such NII  Common
 Shares, except:  (i) in the case of holders of NII Common  Shares described
 in Section 4.1(c),  to receive  the consideration provided  for in  Section
 4.1(c)  or (ii)  in the  case of  Dissenting Shareholders,  to perfect  the
 rights  to  appraisal for  such shares  which are  Dissenting Shares  or to
 receive the consideration provided for in Section 4.1(c) in accordance with
 Section 4.2(a).

 b.         The  Boards of Directors of Parent and the Surviving Corporation
 are empowered  to  adopt  further rules  and  regulations,  not  materially
 inconsistent with the provisions of this Agreement, regarding the surrender
 and  exchange of certificates  that represented the  issued and outstanding
 NII Common Shares immediately prior to the Effective Time.

 K.         Consideration and Payment.  

 a.         Subject to Section 4.4(b) below and the terms and conditions set
 forth in the  Acquisition Agreement, in reliance upon  the representations,
 warranties, covenants and  agreements of NII and the Principal Shareholders
 contained  in the Acquisition Agreement, and in consideration of the Merger
 and  the  other transactions  contemplated  by  the Acquisition  Agreement,
 Parent shall,  at the Effective Time,  deliver or cause to  be delivered to
 the  Representative, in full payment in respect of the Merger, certificates
 representing  that number of whole Parent Common Shares to which the former
 holders  of  NII Common  Shares described  in  Section 4.1(c)  are entitled
 pursuant to  Section 4.1(c)  and the  aggregate amount of  cash in  lieu of
 fractional Parent Common Shares to which such holders are entitled pursuant
 to Section  4.4(c).  No  interest will be paid  or will accrue  on any cash
 payable pursuant to Section 4.4(c) or on any dividends payable with respect
 to the whole Parent Common Shares deliverable hereunder.  Such certificates
 shall be  registered in the names  of such former NII  Shareholders, with a
 single certificate for each such holder reflecting the Parent Common Shares
 to which  such  holder is  entitled  based upon  the NII  Shareholder  List
 furnished to Parent pursuant  to Section ___ of the  Acquisition Agreement;
 provided,  however, that  in order  to facilitate  the deposit  into escrow
 contemplated by Section 8.7 of the Acquisition Agreement, the Parent Common
 Shares issuable to  each Principal  Shareholder shall be  divided into  two
 certificates, one representing the number  of Parent Common Shares required
 to be  deposited into escrow  by such Principal  Shareholder and  the other
 representing the balance of  the Parent Common Shares which  such Principal
 Shareholder is entitled to receive hereunder.




 b.         If the Representative delivers  certificates to Parent  pursuant
 to Section  4.3(a) hereof that represent  fewer than all of  the NII Common
 Shares  described in Section 4.1(c),  Parent shall be  entitled to withhold
 from  its delivery  to the  Representative pursuant  to Section  4.4(a) the
 corresponding  certificates for whole Parent Common Shares and cash in lieu
 of fractional shares until such date as such certificates are delivered  by
 the Representative.

 c.         Notwithstanding any  other  provision of  this  Agreement,  each
 holder of  NII Common Shares whose  shares are converted in  the Merger who
 would  otherwise have  been entitled to  receive pursuant  to the  Merger a
 fraction of a Parent Common Share (after taking into account all NII Common
 Shares owned by  such holder) shall receive, in lieu thereof, cash (without
 interest) in an amount, less the  amount of any withholding taxes which may
 be required thereon, equal to such fractional part of a Parent Common Share
 multiplied by the Average  Share Price (adjusted as appropriate  to reflect
 any  Parent  Recapitalization).    No certificates  or  scrip  representing
 fractional Parent Common Shares shall be issued as a result  of the Merger,
 and no  such fractional share  interest will  entitle the owner  thereof to
 vote or to any rights of a shareholder of Parent.

                                  ARTICLE V

                                MISCELLANEOUS
 L.         Consummation.  The obligation  of each of the parties  hereto to
 effect the Merger  shall be subject to  all of the terms  and conditions to
 such party's obligations under the Acquisition Agreement.

 M.         Amendment and  Modification.   The parties hereto  may amend  or
 modify this Agreement in any respect by action taken or authorized by their
 respective Boards of Directors at any time before  or after approval hereof
 by  the shareholders  of NII  or Parent  but prior  to the  Effective Time;
 provided that, after such approval, no amendment shall be made which by law
 requires  further  approval  by  such  shareholders  without  such  further
 approval.    This Agreement  may not  be amended  or  modified except  in a
 writing signed on behalf of each party hereto.

 N.         Termination.  This Agreement  shall automatically be  terminated
 and the  transactions contemplated herein shall  automatically be abandoned
 upon a termination of the Acquisition Agreement.

 O.         Counterparts.  This  Agreement may  be executed in  two or  more
 counterparts, each  of which shall be  deemed to be an  original, but which
 together shall constitute a single agreement.

 P.         Governing  Law.    This  Agreement  shall  be  governed  in  all
 respects, including validity, interpretation and effect, by the laws of the
 State of California,  to the extent  applicable to the  Merger, and in  all
 other  respects, by the laws  of the Commonwealth  of Pennsylvania, without
 regard to internal conflict of law principles.






                                     IN  WITNESS WHEREOF, Parent and each of
 the Constituent Corporations have  caused this Agreement to be  executed by
 their  respective officers  hereunto duly  authorized, all  as of  the date
 first above written.


                                SELAS CORPORATION OF AMERICA


                                By:_______________________________
                                   Name:   Stephen F. Ryan
                                   Title:  President and CEO


                                By:_______________________________
                                   Name:   Robert W. Ross
                                   Title:  Secretary




                                SELAS ACQUISITION CORPORATION 
                                By:_______________________________
                                   Name:   Stephen F. Ryan
                                   Title:  President and CEO



                                By:_______________________________
                                   Name:   Robert W. Ross
                                   Title:  Secretary



                                NII, INCORPORATED


                                By:_______________________________
                                   Name:   William D. McEntire
                                   Title:  President and CEO


                                By:_______________________________
                                   Name:   Suzanne M. McEntire
                                   Title:  Secretary<PAGE>






                                                     














                          AGREEMENT AND PLAN OF ACQUISITION

                            dated as of September 25, 1997

                                     by and among

                            SELAS CORPORATION OF AMERICA,

                            SELAS ACQUISITION CORPORATION,

                                  NII, INCORPORATED,

                      CERTAIN SHAREHOLDERS OF NII, INCORPORATED

                                         and

                           THE SHAREHOLDERS OF WIDMAR, INC.





                                  TABLE OF CONTENTS

                                                                       Page


          SECTION 1.  THE MERGER  . . . . . . . . . . . . . . . . . . .   2
               1.1  The Merger  . . . . . . . . . . . . . . . . . . . .   2
               1.2  Effective Time of Merger  . . . . . . . . . . . . .   2
               1.3  Closing . . . . . . . . . . . . . . . . . . . . . .   2

          SECTION 2.  REPRESENTATIONS AND WARRANTIES OF NII AND THE
                           PRINCIPAL SHAREHOLDERS . . . . . . . . . . .   2
               2.1  Organization  . . . . . . . . . . . . . . . . . . .   2
               2.2  Capitalization  . . . . . . . . . . . . . . . . . .   3
               2.3  Articles of Incorporation and Bylaws  . . . . . . .   4
               2.4  Power and Authority . . . . . . . . . . . . . . . .   4
               2.5  No Conflict; Consents and Approvals . . . . . . . .   5
               2.6  Investments and Subsidiaries  . . . . . . . . . . .   6
               2.7  Compliance with Laws  . . . . . . . . . . . . . . .   7
               2.8  Litigation; Orders  . . . . . . . . . . . . . . . .   8
               2.9  Financial Statements  . . . . . . . . . . . . . . .   8
               2.10 Absence of Undisclosed Liabilities  . . . . . . . .   9
               2.11 Title to Properties; Encumbrances . . . . . . . . .   9
               2.12 Condition and Sufficiency of Assets . . . . . . . .  10
               2.13 Accounts Receivable . . . . . . . . . . . . . . . .  10
               2.14 Inventory . . . . . . . . . . . . . . . . . . . . .  10
               2.15 Product Design; Warranties  . . . . . . . . . . . .  11
               2.16 Taxes . . . . . . . . . . . . . . . . . . . . . . .  11
               2.17 List of Certain Assets, Rights, Contracts, etc  . .  13
               2.18 Contracts . . . . . . . . . . . . . . . . . . . . .  15
               2.19 Intellectual Property . . . . . . . . . . . . . . .  16
               2.20 Customers and Suppliers . . . . . . . . . . . . . .  16
               2.21 Labor Matters . . . . . . . . . . . . . . . . . . .  17
               2.22 Employee Benefits . . . . . . . . . . . . . . . . .  19
               2.23 Relationships With Related Persons  . . . . . . . .  23
               2.24 Environmental Matters . . . . . . . . . . . . . . .  23
               2.25 Absence of Certain Changes and Events . . . . . . .  26
               2.26 Books and Records . . . . . . . . . . . . . . . . .  27
               2.27 Insurance . . . . . . . . . . . . . . . . . . . . .  28
               2.28  Brokers  . . . . . . . . . . . . . . . . . . . . .  30
               2.29  Information Supplied . . . . . . . . . . . . . . .  30
               2.30  Voting Requirements  . . . . . . . . . . . . . . .  30
               2.31  Accounting Matters . . . . . . . . . . . . . . . .  30
               2.32  Full Disclosure. . . . . . . . . . . . . . . . . .  30

          SECTION 3.  REPRESENTATIONS AND WARRANTIES OF PARENT AND 
                           MERGER SUB . . . . . . . . . . . . . . . . .  31
               3.1  Organization and Good Standing  . . . . . . . . . .  31
               3.2  Power and Authorization . . . . . . . . . . . . . .  31
               3.3  No Conflict; Consents and Approvals . . . . . . . .  32
               3.4  Capitalization  . . . . . . . . . . . . . . . . . .  33
               3.5  Parent Common Shares  . . . . . . . . . . . . . . .  33
               3.6  SEC Reports; Financial Statements . . . . . . . . .  33
               3.7  Absence of Changes  . . . . . . . . . . . . . . . .  34<PAGE>





                                                                       Page

               3.8  Brokers . . . . . . . . . . . . . . . . . . . . . .  34
               3.9  Information Supplied  . . . . . . . . . . . . . . .  34
               3.10  Interim Operations of Merger Sub . . . . . . . . .  34
               3.11  Accounting Matters . . . . . . . . . . . . . . . .  34

          SECTION 4.  COVENANTS . . . . . . . . . . . . . . . . . . . .  35
               4.1  Conduct of Business by the Acquired Companies.    .  35
               4.2  Negative Covenants  . . . . . . . . . . . . . . . .  35
               4.3  Access to Information; Confidentiality  . . . . . .  36
               4.4  Preparation of the Registration Statement and the
                    Prospectus  . . . . . . . . . . . . . . . . . . . .  37
               4.5  Conditions to Closing; Consents and Approvals . . .  38
               4.6  Notifications . . . . . . . . . . . . . . . . . . .  39
               4.7  Shareholders' Meetings  . . . . . . . . . . . . . .  39
               4.8  Pooling Letter of NII's Accountants . . . . . . . .  40
               4.9  Pooling Letter of Parent's Accountants  . . . . . .  40
               4.10  Comfort Letters  . . . . . . . . . . . . . . . . .  40
               4.11  Additional Financial Statements  . . . . . . . . .  41
               4.12  Affiliates . . . . . . . . . . . . . . . . . . . .  41
               4.13  Pooling of Interests . . . . . . . . . . . . . . .  42
               4.14  NII ESOP . . . . . . . . . . . . . . . . . . . . .  42
               4.15 NII Shareholder List; Execution of Acknowledgement
                    and Consent . . . . . . . . . . . . . . . . . . . .  42
               4.16 Noncompetition  . . . . . . . . . . . . . . . . . .  42
               4.17 NII Disclosure Statement  . . . . . . . . . . . . .  44
               4.18 The Stock Acquisition . . . . . . . . . . . . . . .  44

          SECTION 5.  CERTAIN CONDITIONS PRECEDENT TO PARENT'S
                             AND MERGER SUB'S OBLIGATIONS . . . . . . .  48
               5.1  Representations and Warranties  . . . . . . . . . .  48
               5.2  Performance of Covenants  . . . . . . . . . . . . .  48
               5.3  Officer's Certificates  . . . . . . . . . . . . . .  48
               5.4  Parent Shareholder Approval . . . . . . . . . . . .  48
               5.5  Consents and Approvals  . . . . . . . . . . . . . .  48
               5.6  Legal Matters . . . . . . . . . . . . . . . . . . .  49
               5.7  Employment Agreements . . . . . . . . . . . . . . .  49
               5.8  Due Diligence Review  . . . . . . . . . . . . . . .  49
               5.9  Resignation of Directors and Officers . . . . . . .  49
               5.10  Opinion of Counsel . . . . . . . . . . . . . . . .  50
               5.11  Pooling Letters  . . . . . . . . . . . . . . . . .  50
               5.12  Affiliate Letters  . . . . . . . . . . . . . . . .  50
               5.13  Dissenters' Rights . . . . . . . . . . . . . . . .  50
               5.14  NII Shareholder Approval . . . . . . . . . . . . .  50
               5.15  Effectiveness of Registration Statement  . . . . .  50
               5.16  Listing of Parent Common Shares  . . . . . . . . .  50
               5.17  Net Worth  . . . . . . . . . . . . . . . . . . . .  50
               5.18  The Merger Agreement . . . . . . . . . . . . . . .  50
               5.19  Shareholder Signatories  . . . . . . . . . . . . .  50
               5.20  Escrow Agreement . . . . . . . . . . . . . . . . .  51
               5.21  GAAP Statements  . . . . . . . . . . . . . . . . .  51

                                         -ii-





                                                                       Page

               5.22  Waivers  . . . . . . . . . . . . . . . . . . . . .  51
               5.23 NII Disclosure Statement  . . . . . . . . . . . . .  51

          SECTION 6.     CERTAIN CONDITIONS PRECEDENT TO NII'S
                         OBLIGATIONS  . . . . . . . . . . . . . . . . .  51
               6.1  Representations and Warranties  . . . . . . . . . .  51
               6.2  Performance of Covenants  . . . . . . . . . . . . .  51
               6.3  Officer's Certificate . . . . . . . . . . . . . . .  51
               6.4  Parent Shareholder Approval . . . . . . . . . . . .  51
               6.5  Approvals . . . . . . . . . . . . . . . . . . . . .  52
               6.6  Legal Matters . . . . . . . . . . . . . . . . . . .  52
               6.7  NII Shareholder Approval  . . . . . . . . . . . . .  52
               6.8  Effectiveness of Registration Statement . . . . . .  52
               6.9  Opinion of Counsel  . . . . . . . . . . . . . . . .  52
               6.10 Average Share Price . . . . . . . . . . . . . . . .  52
               6.11 The Merger Agreement  . . . . . . . . . . . . . . .  52
               6.12 Listing of Parent Common Shares . . . . . . . . . .  52
               6.13 Escrow Agreement  . . . . . . . . . . . . . . . . .  53

          SECTION 7.  TERMINATION AND ABANDONMENT . . . . . . . . . . .  53
               7.1  Termination . . . . . . . . . . . . . . . . . . . .  53
               7.2  Procedure for Termination; Effect of Termination  .  53

          SECTION 8.  INDEMNIFICATION; ESCROW . . . . . . . . . . . . .  54
               8.1  Indemnification by Principal Shareholders . . . . .  54
               8.2  Indemnification by Parent . . . . . . . . . . . . .  54
               8.3  Limitations on Liability  . . . . . . . . . . . . .  54
               8.4  Procedure For Indemnification - Third Party
                    Claims  . . . . . . . . . . . . . . . . . . . . . .  55
               8.5  Procedure for Indemnification - Other Claims  . . .  57
               8.6  Acknowledgement; Release  . . . . . . . . . . . . .  57
               8.7  Escrow of Parent Common Shares  . . . . . . . . . .  57
               8.8  Appointment of Representative . . . . . . . . . . .  58

          SECTION 9.  GENERAL PROVISIONS  . . . . . . . . . . . . . . .  59
               9.1  Survival of Representations and Warranties  . . . .  59
               9.2  Notices . . . . . . . . . . . . . . . . . . . . . .  60
               9.3  Further Assurances  . . . . . . . . . . . . . . . .  61
               9.4  Costs and Expenses  . . . . . . . . . . . . . . . .  61
               9.5  Public Announcements  . . . . . . . . . . . . . . .  61
               9.6  Waiver; Amendment . . . . . . . . . . . . . . . . .  62
               9.7  Assignment and Benefit  . . . . . . . . . . . . . .  62
               9.8  Governing Law; Consent to Jurisdiction  . . . . . .  63
               9.9  Section Headings and Defined Terms  . . . . . . . .  63
               9.10  Severability . . . . . . . . . . . . . . . . . . .  64
               9.11  Counterparts . . . . . . . . . . . . . . . . . . .  64
               9.12  Entire Agreement . . . . . . . . . . . . . . . . .  64




                                        -iii-





                                       Exhibits


          EXHIBIT A   . . . . . . . . . . . .  Agreement and Plan of Merger

          EXHIBIT B . . . . . . . . . . . . .  Form of Employment Agreement

          EXHIBIT C . . . . . . . . . . . . . . .  Form of Escrow Agreement

          EXHIBIT D . . . . . . . . . . . . . . Acknowledgement and Consent

          EXHIBIT E . . . .  Form of Opinion of Carr, McClellan, Ingersoll,
                               Thomspon & Horn, Professional Corporation

          EXHIBIT F . . . . . Form of Opinion of Drinker Biddle & Reath LLP






































                                         -iv-





                           AGREEMENT AND PLAN OF ACQUISITION


                    THIS AGREEMENT AND PLAN OF ACQUISITION is dated as of
          September 25, 1997, by and among SELAS CORPORATION OF AMERICA, a
          Pennsylvania corporation ("Parent"), SELAS ACQUISITION
          CORPORATION, a California corporation ("Merger Sub"), NII,
          INCORPORATED, a California corporation ("NII"), WIDMAR, INC., a
          California corporation ("Widmar"), RONALD E. ERICKSON and ELAINE
          B. ERICKSON, TRUSTEES OF THE ERICKSON 1994 REVOCABLE TRUST DATED
          APRIL 15, 1994 ("Erickson Trust"), RONALD E. ERICKSON, BERNIE A.
          FREDRICK, RHONDA FREDRICK, ROBERT E. TAMBEAU, JIMMI ROBERTS, JAMES
          ROBERTS, RICHARD J. MCENTIRE, SUZANNE M. MCENTIRE and WILLIAM D.
          MCENTIRE (Widmar, Erickson Trust, and such individuals,
          collectively, the "Principal Shareholders").  An index of defined
          terms is attached as an appendix hereto.


                                      BACKGROUND

                    NII is a holding company which owns, inter alia, all of
          the outstanding capital stock of MRL Industries, Inc., a
          California corporation ("MRL").  Widmar owns a substantial portion
          of the outstanding capital stock of NII.  Bernie A. Fredrick,
          Rhonda Fredrick, James Roberts, Jimmi Roberts, William D. McEntire
          and Suzanne M. McEntire (collectively, the "Widmar Shareholders")
          own all of the outstanding capital stock of Widmar.

                    MRL is engaged in the business (the "Business") of
          manufacturing, distributing and servicing furnaces and related
          parts used in the fabrication of silicon wafers for semiconductor
          devices and other products.

                    The parties hereto desire to provide for the acquisition
          of the Business by Parent through the acquisition by Parent of all
          of the outstanding capital stock of Widmar (the "Stock
          Acquisition") followed by the merger of Merger Sub (which would
          become a subsidiary of Widmar immediately following the
          acquisition of Widmar by Parent) with and into NII in accordance
          with the California General Corporation Law (the "CGCL") and an
          Agreement and Plan of Merger (the "Merger Agreement") attached
          hereto as Exhibit A (the merger provided for therein being herein
          called the "Merger").

                    For Federal income tax purposes, it is intended that the
          Stock Acquisition and the Merger shall qualify as a reorganization
          within the meaning of Section 368 of the Internal Revenue Code of
          1986, as amended (the "Code").

                    For financial accounting purposes, it is intended that
          the Stock Acquisition and the Merger will be accounted for as a
          pooling of interests.<PAGE>





                    NOW, THEREFORE, in consideration of the premises and the
          mutual representations, warranties, covenants and agreements
          herein contained, the parties hereto, intending to be legally
          bound, hereby agree as follows:


                                SECTION 1.  THE MERGER

                    1.1  The Merger.  In accordance with the terms and
          conditions of the Merger Agreement and the CGCL, at the Effective
          Time (as defined in Section 1.2 hereof), Merger Sub shall be
          merged with and into NII and the separate existence of Merger Sub
          shall thereupon cease.  At the election of Parent, any direct or
          indirect wholly-owned subsidiary of Parent may be substituted as a
          constituent corporation in the Merger.  In such event, the parties
          hereto shall execute an appropriate amendment to this Agreement
          and to the Merger Agreement in order to reflect such substitution.

                    1.2  Effective Time of Merger.  The Merger shall become
          effective upon the filing of a copy of the properly executed
          Merger Agreement, together with the officers' certificates
          required by the CGCL, with the Secretary of State of the State of
          California (the date and time when such event has occurred is
          referred to herein as the "Effective Time").  Such filing shall be
          made as soon as practicable after the closing of the transactions
          contemplated in this Agreement in accordance with Section 1.3
          hereof.

                    1.3  Closing.  The closing of the transactions
          contemplated by this Agreement (the "Closing") shall take place at
          the offices of Drinker Biddle & Reath LLP, 1100 Philadelphia
          National Bank Building, 1345 Chestnut Street, Philadelphia,
          Pennsylvania 19107, at 10:00 a.m., local time, on a date to be
          specified by NII and Parent that may be on, but shall be no later
          than the fifth business day following, the day on which all
          conditions to Closing set forth in Sections 5.4, 5.13, 5.14, 6.4
          and 6.7 hereof are satisfied or waived, or at such other date,
          time and place as NII and Parent shall mutually agree (the date on
          which the Closing occurs is referred to herein as the "Closing
          Date").


               SECTION 2.  REPRESENTATIONS AND WARRANTIES OF NII AND THE
                           PRINCIPAL SHAREHOLDERS

                    NII and the Principal Shareholders hereby jointly and
          severally represent and warrant to Parent and Merger Sub as
          follows:

                    2.1  Organization.  Each of NII, MRL and NII's other
          subsidiaries listed in subclause (i) of Section 2.6 
          (collectively, the "Acquired Companies" and individually, an

                                         -2-





          "Acquired Company") is a corporation duly organized, validly
          existing and in good standing under the laws of the jurisdiction
          of its incorporation.  Each Acquired Company has all necessary
          corporate power and corporate authority to carry on its business
          as presently conducted, to own, lease and operate all of the
          properties and the assets that it owns or leases and to perform
          all its obligations under each agreement and instrument by which
          it is bound.  Each Acquired Company is duly qualified to do
          business as a foreign corporation and is in good standing under
          the laws of each jurisdiction in which the character or location
          of the properties and assets owned or leased by it or the nature
          of its activities requires such qualification.

                    2.2  Capitalization.

                         (a)  NII's authorized capital stock consists of
          100,000,000 shares, no par value ("NII Common Shares").  As of the
          date of this Agreement, there were 28,586,067 NII Common Shares
          issued and outstanding.  Except as described in Section 2.2(a) of
          the disclosure statement to be delivered by NII to Parent promptly
          following the execution of this Agreement as contemplated by
          Section 4.17 (the "NII Disclosure Statement"), there are no
          outstanding options, rights, warrants or other agreements or
          commitments of any nature whatsoever (either firm or conditional)
          obligating any Acquired Company or, to the knowledge of the
          Acquired Companies, any shareholder thereof to issue, deliver or
          sell, or cause to be issued, delivered or sold, any shares of
          capital stock or other equity securities of any Acquired Company
          or obligating any Acquired Company or, to the knowledge of the
          Acquired Companies, any shareholder thereof to grant, extend or
          enter into any such option, right, warrant, agreement or
          commitment.  Section 2.2(a) of the NII Disclosure Statement sets
          forth the name of, and the number of NII Common Shares owned by,
          each shareholder of NII as of the date hereof.  Except as
          described in Section 2.2(a) of the NII Disclosure Statement, each
          of the issued shares of capital stock of each Acquired Company has
          been duly authorized and validly issued and is fully paid and
          nonassessable and has not been issued in violation of (nor are any
          of the authorized shares of capital stock of any Acquired Company
          subject to) any preemptive or similar rights created by statute,
          the articles of incorporation or bylaws (or the equivalent
          organizational documents) of any Acquired Company or any agreement
          to which any Acquired Company is a party or is bound, and all of
          such issued and outstanding shares owned by any Acquired Company
          are owned free and clear of all security interests, liens, claims,
          pledges, charges, easements, equitable interests, conditions,
          options, rights of first refusal, mortgages, deeds of trust,
          restrictions of any kind, including any restriction on use,
          voting, transfer, receipt of income or exercise of any other
          attribute of ownership, or other encumbrances of any nature
          whatsoever (each, an "Encumbrance" and collectively,
          "Encumbrances").

                                         -3-





                         (b)  Except as described in Section 2.2(b) of the
          NII Disclosure Statement and except for the provisions of Section
          4.7 hereof, there are no shareholders' agreements, voting trusts,
          proxies or other agreements or arrangements restricting transfers
          or voting of any of the capital stock of any Acquired Company.

                         (c)  Except as described in Section 2.2(c) of the
          NII Disclosure Statement, there are no obligations, contingent or
          otherwise, of any Acquired Company to (i) repurchase, redeem or
          otherwise acquire any securities of any Acquired Company or (ii)
          provide material funds to, or make any material investment in (in
          the form of a loan, capital contribution or otherwise) or provide
          any guarantee with respect to the material obligations of any
          Acquired Company.

                         (d)  Section 2.2(d) of the NII Disclosure Statement
          sets forth the authorized, issued and outstanding capital stock
          and other securities of each Acquired Company other than NII.

                         (e)  No securities of any of the Acquired Companies
          are or ever have been (i) registered under or required to be
          registered under the Securities Act of 1933, as amended (the
          "Securities Act"), the Securities Exchange Act of 1934, as amended
          (the "Exchange Act"), or equivalent laws of any state, local or
          foreign jurisdiction, (ii) offered to the public, or (iii) listed
          for trading on any stock exchange, market or system; and no
          registration statement or application has been filed, nor
          agreement entered into, to so register or list any such securities
          or to offer them to the public.

                    2.3  Articles of Incorporation and Bylaws.  NII has
          heretofore furnished or made available to Parent complete and
          correct copies of the articles of incorporation and the bylaws (or
          the equivalent organizational documents) of each Acquired Company,
          in each case as amended or restated to date.  Neither NII nor MRL
          is in violation of its articles of incorporation or bylaws (or
          equivalent organizational documents), and no other Acquired
          Company is in violation of its articles of incorporation or,
          except as may be immaterial, its bylaws.

                    2.4  Power and Authority.  NII has all requisite
          corporate power and corporate authority to execute, deliver and
          (subject to, in the case of the Merger, the approval and adoption
          of this Agreement and the Merger Agreement by the shareholders of
          NII as contemplated by Section 5.14 hereof) perform its
          obligations under this Agreement, the Merger Agreement and all
          other agreements and documents required to be delivered by it
          prior to or at the Closing (collectively, the "NII Transaction
          Documents").  The execution, delivery and performance by NII of
          the NII Transaction Documents have been duly authorized by all
          necessary corporate action on the part of NII (subject to, in the
          case of the Merger, the approval and adoption of this Agreement

                                         -4-





          and the Merger Agreement by the shareholders of NII as
          contemplated by Section 5.14 hereof).  This Agreement has been
          duly and validly executed and delivered by NII and each of the
          Principal Shareholders and, assuming due authorization, execution
          and delivery thereof by Parent and Merger Sub, constitutes the
          legal, valid and binding obligation of each of NII and each
          Principal Shareholder, enforceable against each of them in accor-
          dance with its terms.  When executed and delivered as contemplated
          herein, each of the other NII Transaction Documents shall,
          assuming due authorization, execution and delivery by the other
          parties thereto, constitute a legal, valid and binding obligation
          of each of NII and each Principal Shareholder that is a party
          thereto, enforceable against each of them that is a party thereto
          in accordance with its terms.

                    2.5  No Conflict; Consents and Approvals.

                         (a)  Except as described in Section 2.5 of the NII
          Disclosure Statement, the execution and delivery of this Agreement
          do not, and the execution and delivery of the Merger Agreement and
          the consummation of the transactions contemplated by the NII
          Transaction Documents will not (in each case, with or without the
          passage of time or the giving of notice):

                               (i)  violate or conflict with (A) the
          articles of incorporation or bylaws (or equivalent organizational
          documents) of any of the Acquired Companies or (B) any law,
          statute, regulation, permit, license, certificate, judgment,
          order, award or other decision or requirement of any arbitrator,
          court, government or governmental agency or instrumentality
          (federal, state, local or foreign) (collectively, "Laws")
          applicable to any Principal Shareholder or any of the Acquired
          Companies or by or to which any properties or assets of any of the
          Acquired Companies or any Principal Shareholder is bound or
          subject;

                              (ii)  violate or conflict with, result in a
          breach of, or constitute a default or otherwise cause any loss of
          benefit under, or give to others any rights (including rights of
          termination, amendment, foreclosure, cancellation or
          acceleration), in or with respect to, any Contract to which any of
          the Acquired Companies or any Principal Shareholder is a party or
          by which any assets or properties of any of the Acquired Companies
          or any Principal Shareholder is bound or affected or any
          Authorization held by any Acquired Company; or

                              (iii)  result in, require or permit the
          creation or imposition of any Encumbrance upon or with respect to
          any of the Acquired Companies or any properties or assets of any
          of the Acquired Companies or any Principal Shareholder.



                                         -5-





                         (b)  The execution and delivery of this Agreement
          by NII and the Principal Shareholders do not, and the execution
          and delivery of the Merger Agreement by NII and the consummation
          by NII and the Principal Shareholders of the transactions
          contemplated by the NII Transaction Documents will not, require
          any of the Acquired Companies to obtain any consent, license,
          permit, waiver, approval, authorization or order of, or to make
          any filing, registration or declaration with or notification to,
          any court, government, governmental agency or instrumentality
          (federal, state, local or foreign), except (i) the pre-merger
          notification requirements of the Hart-Scott-Rodino Antitrust
          Improvements Act of 1976, as amended (the "HSR Act"), (ii) the
          filing and recordation of appropriate merger documents as required
          under California law and (iii) any such consent, license, permit,
          waiver, approval, authorization, order, registration,
          notification, filing or declaration, the failure to obtain or make
          which would not prevent or delay consummation of the Merger or
          otherwise prevent NII or the Principal Shareholders from
          performing any of their respective obligations under the NII
          Transaction Documents and would not result in a material adverse
          effect on the financial condition, results of operations, business
          or prospects of any of the Acquired Companies or permit the
          termination of, or make void or voidable by any individual,
          corporation (including any non-profit corporation), general or
          limited partnership, limited liability company, joint venture,
          estate, trust, association or other entity or governmental
          authority or instrumentality (each, a "Person"), or constitute a
          default or give rise to any liability to any third party under,
          any Contract to which any of the Acquired Companies is a party or
          by which any assets or properties of any of the Acquired Companies
          is bound or affected, any Authorization held by any Acquired
          Company or any Laws.

                         (c)  There are no actions, proceedings or, to the
          knowledge of the Acquired Companies, investigations pending or, to
          the knowledge of the Acquired Companies, threatened, that question
          any of the transactions contemplated by this Agreement or the
          validity of any of the NII Transaction Documents or which, if ad-
          versely determined, could reasonably be expected to have a mater-
          ial adverse effect upon NII's or the Principal Shareholders's
          ability to enter into or perform their respective obligations
          under the NII Transaction Documents.

                    2.6  Investments and Subsidiaries.  Except for (i) NII's
          direct record and beneficial ownership of all of the outstanding
          capital stock of Thermtec, Inc., a California corporation, and
          Tuolumne Fabrication, Inc., a California corporation, (ii) NII's
          direct beneficial and record ownership of all of the outstanding
          capital stock of MRL, and (iii) NII's direct record and beneficial
          ownership of 51,000 shares of capital stock of Western Sales
          Engineering Inc., a California corporation ("Western"), which
          common shares constitute approximately 21.5% of the outstanding

                                         -6-





          capital stock of Western, NII does not directly or indirectly own,
          control or have any investment or other equity interest in any
          Person.  Except as described in Section 2.6 of the NII Disclosure
          Statement, none of the Acquired Companies has agreed, contingently
          or otherwise, to share any profits, losses, costs or liabilities
          or to indemnify any Person or to guaranty the obligations of any
          Person.  The Business is, and has since November 1, 1993 been,
          conducted solely by and through the Acquired Companies other than
          NII and through or by no other Person.  All of the outstanding
          capital stock and other equity securities of each Acquired Company
          other than NII are owned beneficially and of record by NII.

                    2.7  Compliance with Laws.

                         (a)  Each of the Acquired Companies is, and has at
          all times since October 31, 1995 and, to the knowledge of the
          Acquired Companies, between October 31, 1993 and October 31, 1995
          been, in compliance with all applicable Laws and does not have any
          basis to expect and has not received any notice, order or other
          communication from any government, governmental agency or
          instrumentality of any alleged, actual, or potential violation of
          or failure to comply with any material Laws.

                         (b)  Without limiting the generality of the
          foregoing, none of the Acquired Companies and no Person acting on
          behalf of any of the Acquired Companies has made any payment to,
          or conferred any benefit directly or indirectly on, any supplier,
          customer, employee or agent of a supplier or customer or any
          official or employee of any government or agency or
          instrumentality or any political party or candidate for office
          that was unlawful either in the United States or in the place
          where, and at the time when, such payment or benefit was
          authorized, given or received.

                         (c)  Each of the Acquired Companies is and has at
          all times since October 31, 1993 been in possession of all
          federal, state, local, foreign and other governmental consents,
          licenses, permits, variances, franchises, exemptions, approvals,
          grants and authorizations (collectively "Authorizations")
          necessary to own, lease and operate its properties and to carry on
          its business as currently conducted and as conducted at all
          material times in the past.  Such Authorizations are in full force
          and effect without any default or violation thereunder by any of
          the Acquired Companies or, to the knowledge of the Acquired
          Companies, by any other party thereto.  None of the Acquired
          Companies has received any notice of any claim or charge that any
          of the Acquired Companies is or at any material time in the past
          has been in violation of or in default under any such
          Authorization.  No such Authorization currently in effect shall be
          affected by the transactions contemplated herein.  No Acquired
          Company has received any notice that any such Authorization


                                         -7-





          currently in effect may be revoked or may not in the ordinary
          course be renewed upon its expiration.

                    2.8  Litigation; Orders.  (a)  Except as described in
          Section 2.8(a) of the NII Disclosure Statement, there are no, and
          during the last four years there have not been any, claims,
          actions, suits, proceedings (arbitration or otherwise) or, to the
          knowledge of the Acquired Companies, investigations involving or
          affecting any of the Acquired Companies, any properties or assets
          of any of the Acquired Companies or any directors, officers or
          shareholders of any of the Acquired Companies in their capacities
          as such, before or by any court, government, governmental agency
          or instrumentality (federal, state, local or foreign), or before
          an arbitrator of any kind.   To the knowledge of the Acquired
          Companies, no such claim, action, suit, proceeding or investiga-
          tion is presently threatened or contemplated.  To the knowledge of
          the Acquired Companies, there are no facts which could reasonably
          serve as a basis for any such claim, action, suit, proceeding or
          investigation that could reasonably be expected to present a
          material risk of loss to any Acquired Company.  There are no
          unsatisfied judgments, penalties or awards against or affecting
          any of the Acquired Companies or any properties or assets of any
          of the Acquired Companies.

                         (b)  Except as described in Section 2.8(b) of the
          NII Disclosure Statement, there is no material award, injunction,
          judgment, order, ruling, subpoena (that has been served) or
          verdict or other decision entered, issued, made or rendered by any
          court, arbitrator, government or governmental agency or
          instrumentality, or agreement with any government or governmental
          agency or instrumentality (federal, state, local or foreign)
          (collectively, "Orders") to which any Acquired Company or any of
          their assets or properties is subject.  To the knowledge of the
          Acquired Companies, no officer, director, partner, shareholder or
          employee of any Acquired Company is subject to any Order that
          prohibits such officer, director, partner, shareholder or employee
          from engaging in or continuing any conduct, activity or practice
          relating to the Business.  The Acquired Companies have each
          complied in all respects with the terms and conditions of each
          Order applicable to any of them.

                    2.9  Financial Statements.

                         (a)  Section 2.9(a) of the NII Disclosure Statement
          includes the following unaudited consolidated financial statements
          of NII (collectively, the "Existing Financial Statements"):  (i)
          the consolidated balance sheet as of October 31, 1996 and October
          31, 1995 and the related consolidated statements of income for the
          fiscal years then ended and (ii) the consolidated balance sheet as
          of July 31, 1997, together with the related consolidated statement
          of income for the nine months then ended.  The Existing Financial
          Statements have not in all respects been prepared in accordance

                                         -8-





          with United States generally accepted accounting principles
          ("GAAP").

                         (b)  As promptly as practicable after the date
          hereof, NII shall deliver to Parent the following financial
          statements (collectively, the "GAAP Statements"):  (i) the
          consolidated and consolidating balance sheet of NII as of
          October 31, 1996 and as of October 31, 1995 and October 31, 1994
          and the related consolidated and consolidating statements of
          income and retained earnings, shareholders' equity and cash flow
          for each of the fiscal years then ended, together, in the case of
          the financial statements for the year ending October 31, 1996,
          with the report thereon of Meredith, Cardozo, Lanz & Chiu LLP,
          independent accountants; (ii) the consolidated balance sheet of
          NII as at July 31, 1997 (including notes thereto, the "Interim NII
          Balance Sheet"), and the related consolidated statements of income
          and retained earnings, shareholders' equity and cash flow for the
          nine months then ended, together with the corresponding period of
          the preceding fiscal year, together with the report thereon of
          Meredith, Cardozo, Lanz & Chiu LLP.  The GAAP Statements and notes
          will be true, complete and correct in all material respects, will
          be prepared from the books and records of NII and its subsidiaries
          and will fairly present the consolidated financial condition, cash
          flow and results of operations of NII as of the respective dates
          thereof and for the periods therein referred to, all in accordance
          with GAAP consistently applied. 

                    2.10 Absence of Undisclosed Liabilities.  There are no
          liabilities of any of the Acquired Companies (whether absolute,
          accrued, contingent or otherwise), except liabilities:  (a)
          described in Section 2.10 of the NII Disclosure Statement; (b) as,
          and only to the extent, reflected or reserved against in the
          Interim NII Balance Sheet or disclosed in the notes thereto; or
          (c) incurred in the ordinary course of business consistent with
          past practice after July 31, 1997 and prior to the Closing Date
          and which are neither material in amount nor inconsistent with any
          of the representations or warranties made herein.

                    2.11 Title to Properties; Encumbrances.  Section 2.11 of
          the NII Disclosure Statement contains a complete and accurate list
          of all interests in real property owned, leased or occupied by any
          of the Acquired Companies.  Except as described in the following
          sentence, each of the Acquired Companies has good, valid and
          marketable title to, or a valid leasehold interest in, all of its
          properties and assets (real, personal and mixed, tangible and
          intangible), including, without limitation, all the properties and
          assets reflected in the Interim NII Balance Sheet (except for
          properties and assets not material, individually or in the
          aggregate, to the Business that were disposed of in the ordinary
          course of business consistent with past practices since July 31,
          1997).  None of such properties or assets are subject to any
          liability, obligation or Encumbrance of any kind (whether

                                         -9-





          absolute, accrued, contingent or otherwise), except (i) as set
          forth in Section 2.11 of the NII Disclosure Statement, and (ii)
          minor imperfections of title and Encumbrances, if any, which are
          not substantial in amount, do not materially detract from the
          value of the property or assets subject thereto and do not impair
          the operations of any of the Acquired Companies.  All buildings,
          plants and structures owned by any Acquired Company lie wholly
          within the boundaries of the real property owned by such Acquired
          Company and do not encroach upon the property of, or otherwise
          conflict with the property rights of, any other Person, and, to
          the knowledge of the Acquired Companies, all buildings, plants and
          structures leased by any Acquired Company lie wholly within the
          boundaries of the real property leased by such Acquired Company
          and do not encroach upon the property of, or otherwise conflict
          with the property rights of, any other Person.  No condemnation
          proceeding is pending or, to the knowledge of the Acquired
          Companies, threatened with respect to any real property identified
          in the NII Disclosure Statement, nor, to the knowledge of the
          Acquired Companies, is any change in any Law pending or threatened
          which would interfere with the use of any such building, structure
          or other appurtenance thereon.

                    2.12 Condition and Sufficiency of Assets.  All of the
          buildings, plants, structures and equipment owned, leased or used
          by each Acquired Company are structurally sound, are in good
          operating condition and repair, and are adequate for the uses to
          which they are being put, and none of such buildings, plants,
          structures, or equipment is in need of maintenance, repairs or
          improvements except for ordinary, routine maintenance and repairs
          that are not material in nature or cost.  All of the buildings,
          plants, structures and equipment of the Acquired Companies are
          sufficient for the continued conduct of the Business after the
          Closing in substantially the same manner as it has been conducted
          since October 31, 1993.

                    2.13 Accounts Receivable.  All accounts and notes
          receivable reflected in the Interim NII Balance Sheet or that are
          reflected on the accounting records of any Acquired Company as of
          the Closing Date (collectively, the "Accounts Receivable")
          represent or will represent valid obligations from bona fide sales
          actually made or services actually performed by an Acquired
          Company in the ordinary course of business.  Unless paid prior to
          the Closing Date, the Accounts Receivable are or will be as of the
          Closing Date current and collectible net of the respective
          reserves shown on the Interim NII Balance Sheet or on the
          accounting records of the Acquired Companies as of the Closing
          Date (which reserves are adequate and calculated consistent with
          past practice and, in the case of the reserve as of the Closing
          Date, will not exceed $15,000).

                    2.14 Inventory.  All inventory of the Acquired
          Companies, whether or not reflected in the Interim NII Balance

                                         -10-





          Sheet, consists of a quality and quantity useable and salable in
          the ordinary course of business consistent with past practice,
          except for obsolete items and items of below-standard quality, all
          of which have been written off or written down to net realizable
          value in the Interim NII Balance Sheet or on the accounting
          records of the Acquired Companies as of the Closing Date, as the
          case may be.  All inventories not written off have been priced at
          the lower of cost or market on a first in, first out basis.  The
          quantities of each item of inventory (whether raw materials, work-
          in-process, or finished goods) are not excessive, but are
          reasonable in the present circumstances of the Acquired Companies. 
          All work in process and finished goods inventory is free of any
          defect or other deficiency.

                    2.15 Product Design; Warranties.

                         (a)  Except as described in Section 2.15(a) of the
          NII Disclosure Statement, (i) no Acquired Company has agreed to
          become, or is otherwise responsible for, consequential damages;
          (ii) there are no warranties (express or implied) outstanding with
          respect to any products created, manufactured, sold, distributed
          or licensed, or any services rendered, by any of the Acquired
          Companies other than any such implied by law pursuant to Sections
          2-312 and 2-314 of the Uniform Commercial Code; (iii) there are no
          material design, manufacturing or other material defects, latent
          or otherwise, with respect to any such products; and (iv) such
          products are not toxic.  A copy of each standard warranty of each
          Acquired Company is included in Section 2.15 of the NII Disclosure
          Statement.  Except as described in Section 2.15(a) of the NII
          Disclosure Statement, no Acquired Company has modified or expanded
          its warranty obligation to any customer beyond that set forth in
          such standard warranties.  No products have been sold or
          distributed by any Acquired Company under an understanding that
          such products would be returnable.

                         (b)  The NII Interim Balance Sheet reflects
          appropriate reserves for product design and warranty claims.

                    2.16 Taxes.

                         (a)  All federal, state, local and foreign returns,
          statements and reports relating to Taxes (or extensions relating
          thereto) required to be filed by or with respect to any of the
          Acquired Companies or any affiliate thereof, including, without
          limitation, those relating to or affecting the Business, have been
          filed on a timely basis with the appropriate governments or
          governmental agencies or instrumentalities in all jurisdictions in
          which such returns, statements and reports are required to be
          filed, and all such returns, statements, and reports were true and
          correct when filed.



                                         -11-





                         (b)  All federal, state, local and foreign income,
          profits, franchise, sales, use, payroll, premium, occupancy, prop-
          erty, severance, excise, withholding, value added, unemployment,
          business privilege, transfer and other taxes and governmental
          charges and customs duties (including, without limitation,
          interest and penalties) (collectively, "Taxes") due from or
          required to be remitted by any of the Acquired Companies or any
          affiliate thereof with respect to taxable periods ending on or
          prior to, and the portion of any interim period up to, the Closing
          Date, have been fully and timely paid or, to the extent not yet
          due and payable, have been adequately provided for on the Interim
          NII Balance Sheet or, in the case of Taxes accruing after July 31,
          1997, on the books and records of the Acquired Companies.

                         (c)  There are no levies, liens, or other
          encumbrances existing, threatened or pending with respect to any
          assets or properties of any Acquired Company relating to any
          Taxes.

                         (d)  Section 2.16(d) of the NII Disclosure
          Statement lists all federal, state, local and foreign income,
          franchise sales and use tax returns of, or covering, any of the
          Acquired Companies or affiliates which have been examined or which
          are currently under examination by the Internal Revenue Service or
          by other appropriate taxing authorities, and, except as and to the
          extent described in Section 2.16(d) of the NII Disclosure
          Statement or provided for on the Interim NII Balance Sheet, all
          deficiencies asserted or assessments made as a result of such
          examinations have been fully paid, and there are no other unpaid
          deficiencies asserted or assessments made by any taxing authority
          against any of the Acquired Companies or affiliates thereof or
          otherwise affecting any assets or properties of any of the
          Acquired Companies.

                         (e)  Section 2.16(e) of the NII Disclosure
          Statement lists all elections by or with respect to any of the
          Acquired Companies for federal or state income or franchise tax
          purposes that are currently applicable.  None of the Acquired
          Companies: has filed any consent under section 341(f)(1) of the
          Code or agreed to have the provisions of Code section 341(f)(2)
          apply to any dispositions of "subsection (f) assets" as such term
          is defined in Code section 341(f)(4); has agreed to or is required
          to make any adjustments under Code section 481(a) by reason of a
          change in accounting method or otherwise; employs the LIFO method
          of accounting for inventories for federal income tax purposes; has
          made a transfer of intangible property on which Code section
          367(d) or 482 will require the recognition of additional income
          for any period after the date hereof; or owns stock in a "passive
          foreign investment company" within the meaning of Code section
          1296(a).  The books and records of each of the Acquired Companies
          are sufficient to prove the correctness of all tax returns for
          open tax years and to determine and to prove the adjusted tax

                                         -12-





          basis for federal income tax purposes of each asset of each of the
          Acquired Companies.

                         (f)  Except as described in Section 2.16(f) of the
          NII Disclosure Statement, none of the Acquired Companies is a
          party to any tax sharing agreement or tax indemnification
          agreement.

                         (g)  No Acquired Company has any agreement,
          contract or commitment that provides for any payment that could
          constitute an "excess parachute payment" within the meaning of
          Section 280G of the Code.

                    2.17 List of Certain Assets, Rights, Contracts, etc. 
          Section 2.17 of the NII Disclosure Statement contains a complete
          and accurate list of and reasonably complete details concerning
          each item described below, and NII has delivered or made available
          to Parent true and complete copies of each written Contract
          described below (and, in the case of oral Contracts, a true and
          complete description thereof):

                         (a)  All vehicles, items of machinery, equipment
          and other tangible assets with a book or fair market value in
          excess of $3,000 in respect of any item, owned, leased, used or
          held by any Acquired Company and the location thereof (together,
          if applicable, with the identity of the lessor and lessee, the
          annual rental and unexpired term of the lease);

                         (b)  All Authorizations currently in effect held by
          any Acquired Company or that otherwise relate to the business of,
          or to any of the assets owned or used by, any Acquired Company;

                         (c)  All (i) fictitious business names, tradenames,
          registered and unregistered trademarks, service marks and related
          applications, (ii) patents, patent rights and patent applications,
          (iii) registered and unregistered copyrights in published and
          material unpublished works, computer programs and software (other
          than commercially available programs such as WordPerfect) and (iv)
          agreements, contracts and commitments relating to any of the
          foregoing to which any Acquired Company is a party or by which any
          Acquired Company is bound, and each agreement, commitment, or
          contract to which any Acquired Company is a party or by which any
          Acquired Company is bound relating to: know-how, trade secrets,
          confidential information, software, technical information, process
          technology, plans, drawings and blue prints (the items referred to
          in clauses (i)-(iii) above and referred to following the
          immediately preceding colon are collectively referred to herein as
          "Intellectual Property"), in each case owned, leased, used, held
          by, granted to or licensed by, as either licensor or licensee, any
          Acquired Company;



                                         -13-





                         (d)  All outstanding loans or advances (excluding
          advances to employees for ordinary and necessary business expenses
          made in the ordinary course of business) by any Acquired Company
          to any director, officer, employee or stockholder of any Acquired
          Company or to any other Person;

                         (e)  All Contracts which restrict or purport to
          restrict any business activities or freedom of any Acquired
          Company (or, to the knowledge of the Acquired Companies, any of
          their respective officers or employees) to engage in any business
          or to compete with any Person;

                         (f)  All Contracts to which any Acquired Company is
          a party or is otherwise bound providing for payments (contingent
          or otherwise) to or by any Person based on sales, purchases or
          profits, other than direct payments for goods and services;

                         (g)  All forms of Contracts and catalogs and
          brochures used by any Acquired Company as a standard form in the
          ordinary course of business;

                         (h)  All notes, debt instruments, other evidences
          of indebtedness, letters of credit and guaranties issued by or for
          the benefit of any Acquired Company, and all loan and other
          agreements relating thereto;

                         (i)  All Contracts for capital expenditures;

                         (j)  All Contracts to which any Acquired Company is
          a party or by which any Acquired Company or any of its assets are
          bound that:

                              (i)  involves performance of services or sale
          or lease of goods or materials by such Acquired Company of an
          amount or value in excess of $10,000;

                             (ii)  involves performance of services or sale
          or lease of goods or materials to such Acquired Company of an
          amount or value in excess of $10,000;

                            (iii)  is not in the ordinary course of business
          and involves expenditures or receipts by such Acquired Company of
          more than $10,000; or

                             (iv)  is not terminable by such Acquired
          Company without payment of penalty or premium on less than 30
          days' notice; or

                              (v)  is otherwise material to the business,
          operations, financial condition or prospects of such Acquired
          Company.


                                         -14-





                         For purposes of this Agreement, "Contracts" means
          all purchase orders, contracts, instruments, leases and other
          agreements and commitments, whether oral or written.  For purposes
          of this Section 2.17 only, "Contracts" shall exclude Contracts
          that are fully performed and under which no party to such Contract
          has any further performance obligation, whether or not contingent.

                         (k)  All leases, rental or occupancy Contracts, and
          all other Contracts affecting the ownership of, leasing of, title
          to, use of, or any leasehold or other interest in, any real or
          personal property (except personal property leases and installment
          and conditional sales agreements having a value per item or
          aggregate payments of less than $10,000 and with terms of less
          than one year);

                         (l)  Each outstanding proxy or power-of-attorney or
          similar power granted by any Acquired Company for any purpose
          whatsoever;

                         (m)  Each bank or other financial institution in
          which any Acquired Company has a deposit account, line of credit
          or safe deposit box, the relevant account or other identifying
          number and the name of all Persons authorized to act or deal in
          connection therewith; and

                         (n)  Each amendment, supplement and modification
          (other than changes to purchase orders that are made in the
          ordinary course of business) (whether oral or written) in respect
          of any of the Contracts described above.

                    2.18 Contracts.

                         (a)  Except as described in Section 2.18 of the NII
          Disclosure Statement, all Contracts to which any Acquired Company
          is a party or by which any Acquired Company or any of its assets
          are bound (including any such Contract required to be identified
          in the NII Disclosure Statement) were made in the ordinary course
          of business, are in full force and effect and are valid, binding
          and enforceable against the parties thereto in accordance with
          their respective terms.  Except as described in Section 2.18 of
          the NII Disclosure Statement, no Acquired Company is in material
          default under any such Contract to which it is a party or by which
          it or its assets are bound, and no condition exists or event has
          occurred which with notice or lapse of time would constitute a
          material default or a basis for delay, non-performance,
          termination, modification or acceleration of maturity or
          performance by such Acquired Company or, to the knowledge of the
          Acquired Companies, by any other party thereto.  To the knowledge
          of the Acquired Companies, no Acquired Company is a party to any
          Contract upon which, upon completion, it would be likely to
          recognize a material loss on its books and records.  The terms and
          conditions of all such Contracts are reasonable and customary in

                                         -15-





          the industry and trade in which the Acquired Companies operate,
          and there are no extraordinary terms in such Contracts.

                         (b)  There are no renegotiations of, attempts to
          renegotiate, or outstanding rights to renegotiate any material
          amounts paid or payable to any Acquired Company under current or
          completed Contracts.  All Contracts relating to the sale, design,
          manufacture or provision of products or services by or to any
          Acquired Company have been entered into in the ordinary course of
          business.

                         (c)  Except as disclosed in Section 2.18(c) of the
          NII Disclosure Statement, the Acquired Companies provide goods and
          services only pursuant to duly executed written Contracts, and
          none of them is obligated to provide services or goods to any
          Person pursuant to any Contract which is not contained in a
          writing signed by all parties thereto.

                    2.19 Intellectual Property.

                         (a)  Except as otherwise described in Section 2.19
          of the NII Disclosure Statement:  the Acquired Companies are the
          sole owners of all right, title and interest in and to, or have
          the exclusive perpetual right to use without payment to a third
          party, all Intellectual Property, free and clear of any
          Encumbrance; and no Acquired Company has granted or licensed to
          any Person any rights with respect to any of the Intellectual
          Property and no other Person has any rights in or to any of the
          Intellectual Property (including, without limitation, any rights
          to market or distribute any of the Intellectual Property).  

                         (b)  All of the Intellectual Property is in
          compliance with all applicable legal requirements (including
          registration, payment of filing, examination and maintenance fees
          and proofs of working or use) and the Acquired Companies' rights
          therein are valid and enforceable.  None of the Intellectual
          Property is subject to any maintenance fees or taxes or required
          actions falling due within ninety days after the Closing Date.  To
          the knowledge of the Acquired Companies, none of the Intellectual
          Property has been infringed or challenged or threatened in any
          way.  None of the products or services manufactured or sold by any
          Acquired Company nor any Intellectual Property infringes or is, to
          the knowledge of the Acquired Companies, alleged to infringe any
          trademark, copyright, patent or other proprietary right of any
          Person.  The Acquired Companies have taken all reasonable
          precautions to preserve and document their trade secrets and to
          protect the secrecy, confidentiality and value of their trade
          secrets.

                    2.20 Customers and Suppliers.  Section 2.20 of the NII
          Disclosure Statement lists the names of the twenty (20) customers
          of MRL to whom MRL made the most sales during the 1996 fiscal year

                                         -16-





          and the aggregate revenues attributable to each in such year, and
          of the twenty (20) suppliers and vendors from whom MRL made the
          most purchases during such period and the aggregate expenditures
          attributable to each in such year.  No customer or customers that
          in the aggregate accounted for more than 5% of the sales of any
          Acquired Company in any fiscal year since October 31, 1993 have
          terminated or materially reduced or have given notice that they
          intend to terminate or materially reduce, the amount of business
          done with any Acquired Company.  No supplier or suppliers or
          vendor or vendors that accounted for more than 1% of the purchases
          of any Acquired Company in any fiscal year since October 31, 1993
          have terminated or materially reduced or have given notice that
          they intend to terminate or materially reduce, the amount of
          business done with any Acquired Company.  No Acquired Company is
          aware of any such intention on the part of any such customer,
          supplier or vendor, whether or not in connection with the
          transactions contemplated hereunder.  There are no, and during the
          last four years there have not been any, material disputes or
          controversies between any Acquired Company and any customer or
          supplier or any other Person regarding the quality,
          merchantability or safety of, or involving a claim of breach of
          warranty which has not been fully resolved with respect to, or
          defect in, any product purchased, manufactured or sold by such
          Acquired Company.  To the knowledge of the Acquired Companies,
          each Acquired Company enjoys good working relationships under all
          arrangements and agreements with customers and suppliers necessary
          to the normal operation of its businesses.  Alternative sources of
          supply, on substantially similar terms and conditions, exist for
          all material goods or services purchased by or supplied to any
          Acquired Company.

                    2.21 Labor Matters.

                         (a)  Except as described in Section 2.21 of the NII
          Disclosure Statement:  (i) since October 31, 1993, no Acquired
          Company has been or is a party to any collective bargaining or
          other labor Contract; (ii) no application or petition for
          certification of a collective bargaining agent is pending or, to
          the Acquired Companies' knowledge, is threatened, and none of the
          employees of any Acquired Company are, or since October 31, 1993
          have been, represented by any union or other bargaining
          representative; (iii) since October 31, 1993, no union has
          attempted to organize any group of any Acquired Company's
          employees, and no such group has sought to organize into a union
          or similar organization for the purpose of collective bargaining,
          and, to the Acquired Companies' knowledge, no such organizational
          activity is threatened or contemplated by any Person; (iv) there
          has not been, there is not presently pending or existing and, to
          the Acquired Companies' knowledge, there is not threatened any
          strike, slowdown, picketing, work stoppage, grievance, labor
          arbitration, or proceeding in respect of or arising from any labor
          dispute against or affecting any Acquired Company or its premises;

                                         -17-





          (v) since October 31, 1993, there has been no lockout of any
          employees by any Acquired Company, and no such action is
          contemplated by any Acquired Company; and (vi) no agreement
          restricts any Acquired Company from relocating, closing or
          terminating any of its operations or facilities or any portion
          thereof.  No Acquired Company: has incurred liability under the
          Workers' Adjustment and Retraining Notification Act or any other
          federal, state, local or foreign "plant closing" or similar law;
          is a contractor with the government of the United States or any
          state, municipality or foreign jurisdiction; has failed at any
          material time in the past to be in compliance with the United
          States Fair Labor Standards Act and similar federal, state, local
          and foreign laws with respect to hours worked by and payments made
          to its employees; or has been cited for violations of the
          Occupational Safety and Health Act of 1970, as amended ("OSHA"),
          any regulation promulgated pursuant to OSHA or any other federal,
          state, local or foreign statute, ordinance, rule or regulation
          establishing standards of workplace safety or paid any fines or
          penalties with respect to such citation.  Each Acquired Company
          that is considered a subcontractor with the government of the
          United States or any state, municipality or foreign jurisdiction
          such that it is required to maintain an affirmative action plan
          has adopted, maintained and followed any and all such required
          plans.

                         (b)  Section 2.21(b) of the NII Disclosure
          Statement sets forth the following information for each officer
          and employee of each Acquired Company and for each consultant and
          independent contractor regularly retained (including each such
          Person on leave or layoff status):  employee name and job title;
          current annual rate of compensation (identifying bonuses
          separately), any change in compensation since October 31, 1996 and
          any future changes in compensation that may have been promised;
          vacation accrued and service credited for purposes of vesting and
          eligibility to participate in applicable Employee Benefit Plans;
          number of NII Common Shares owned through the ESOP; and any
          automobile leased or owned by an Acquired Company primarily for
          use by any of the foregoing Persons.  Section 2.21(b) of the NII
          Disclosure Statement describes each employment, severance, change
          in control, consulting, commission, agency and representative
          Contract or arrangement to which any Acquired Company is a party
          or is otherwise bound, including, without limitation, all
          Contracts relating to wages, hours, severance, retirement benefits
          or annuities, or other terms or conditions of employment (other
          than unwritten employment arrangements terminable at will without
          payment of any contractual severance or other amount).  There are
          no severance, change of control or other agreements or
          arrangements to which any Acquired Company is a party or is
          otherwise bound obligating any Acquired Company to make any
          payment to any director, officer, employee or shareholder of any
          Acquired Company, or causing any acceleration of, or other
          increase in compensation to, any such Person as a result of the

                                         -18-





          Merger or any of the transactions contemplated hereby.   None of
          the employees of any Acquired Company has, to the knowledge of the
          Acquired Companies, indicated a desire to terminate his or her
          employment, or any intention to do so in connection with the
          transactions contemplated hereunder.

                    2.22 Employee Benefits.  Except as described in Section
          2.22 of the NII Disclosure Statement:

                         (a)  Neither NII, any of the other Acquired
          Companies nor any ERISA Affiliate (as defined below), for the
          benefit of any of their respective employees, maintains,
          contributes or is or was within the past four years obligated to
          make payments to any employee pension benefit plan ("Pension
          Plan"), as defined in section 3(2) of the Employee Retirement
          Income Security Act of 1974, as amended ("ERISA"), any employee
          welfare benefit plan ("Welfare Plan"), as defined in section 3(1)
          of ERISA, any deferred compensation plan, or any other plan,
          arrangement or commitment maintained by or on behalf of NII, any
          of the other Acquired Companies or any ERISA Affiliate to provide
          benefits to employees of NII, any of the other Acquired Companies
          or any ERISA Affiliate (collectively, "Employee Benefit Plans"). 
          As used herein, "ERISA Affiliate" shall refer to any trade or
          business, whether or not incorporated, under common control with
          NII within the meaning of section 414(b), (c), (m) or (o) of the
          Code.

                         (b)  NII, the other Acquired Companies and the
          ERISA Affiliates have, prior to the Closing, delivered to Parent,
          with respect to all Employee Benefit Plans listed in Section 2.22
          of the NII Disclosure Statement, true, complete and correct copies
          of the following: all plan documents, handbooks, manuals,
          collective bargaining agreements and similar documents governing
          employment policies, practices and procedures; all the most recent
          summary plan descriptions and any subsequent summaries of material
          modifications and all other material employee communications
          discussing any employee benefit; Forms 5500 as filed with the IRS
          for the most recent four plan years; the most recent report of the
          enrolled actuary for all defined benefit plans, funded welfare
          plans or other plans requiring actuarial valuation; all trust
          agreements with respect to employee benefit plans; plan contracts
          with service providers and plan contracts with insurers providing
          benefits for participants or liability insurance for fiduciaries
          and other parties in interest or bonding; most recent annual audit
          and accounting of plan assets for all funded plans; and most
          recent IRS determination letter for all plans qualified under Code
          section 401.

                         (c)  With respect to each Employee Benefit Plan
          required to be listed on the NII Disclosure Statement:



                                         -19-





                              (i)  each Employee Benefit Plan has been
          administered in compliance with its terms and is in compliance in
          all material respects with the applicable provisions of ERISA, the
          Code and other applicable laws, rules and regulations, as they
          relate to such plans (including, but not limited to, the funding,
          filing, reporting and disclosure obligations and COBRA
          continuation coverage obligations).

                              (ii)  NII, the other Acquired Companies and
          the ERISA Affiliates have made or provided for all contributions
          to all Employee Benefit Plans as required under the terms of each
          such Employee Benefit Plan for all periods through Closing.

                              (iii)  no Pension Plan has been the subject of
          a "reportable event" (as defined in Section 4043 of ERISA) and
          there have been no "prohibited transactions" (as defined in
          Section 4975 of the Code or in Part 4 of Subtitle B of Title I of
          ERISA) with respect to any Employee Benefit Plan.

                              (iv)  neither NII, any of the other Acquired
          Companies nor any ERISA Affiliate has incurred any liability under
          any provision of ERISA or other applicable law relating to any
          Employee Benefit Plan or knows of any inquiries, proceedings,
          claims or suits pending or threatened by the Internal Revenue
          Service (the "IRS"), the U.S. Department of Labor (the "DOL"), the
          Pension Benefit Guaranty Corporation (the "PBGC"), or by any
          participant or beneficiary, with respect to any Employee Benefit
          Plan or trust under such Employee Benefit Plan, or the sponsor or
          administrator of such Employee Benefit Plan, or any fiduciary of
          such Employee Benefit Plan which is now or was formerly maintained
          or contributed to by NII, any of the other Acquired Companies or
          an ERISA Affiliate.

                              (v)  the actuarial present value of
          accumulated benefits (both vested and unvested) of each of the
          Pension Plans, which are defined benefit plans, are fully funded
          in accordance with the actuarial assumptions used by the PBGC to
          determine the level of funding required in the event of the
          termination of such Pension Plan.

                              (vi)  each Employee Benefit Plan which is
          intended to be a qualified plan within the meaning of section 401
          of the Code is, and has from its inception been, so qualified, and
          the IRS has issued each Employee Benefit Plan a favorable
          determination letter which is currently applicable.

                              (vii)  each trust created pursuant to any
          Employee Benefit Plan maintained by NII, any of the other Acquired
          Companies or any ERISA Affiliate has been at all times exempt from
          Federal income tax under section 501(a) of the Code.  No trust
          under any such Employee Benefit Plan has at any time had any
          "unrelated business taxable income," within the meaning of section

                                         -20-





          512 of the Code, nor has any such trust been subject to tax
          thereon under section 511 of the Code.

                              (viii)  neither NII, any of the other Acquired
          Companies nor any ERISA Affiliate is aware of any circumstance or
          event which would jeopardize the tax-qualified status of any
          Employee Benefit Plan or the tax-exempt status of any related
          trust, or would cause the imposition of any liability, penalty or
          tax under ERISA or the Code with respect to any Employee Benefit
          Plan.

                         (d)  Neither NII, any of the other Acquired
          Companies nor any ERISA Affiliate maintains or has ever maintained
          or been obligated to contribute to any multiemployer plan
          ("Multiemployer Plan"), as defined in section 3(37) of ERISA.

                         (e)  With respect to each Employee Benefit Plan
          maintained by NII, any of the other Acquired Companies, or any
          ERISA Affiliate: (i) no unsatisfied liabilities to participants,
          the IRS, the DOL, the PBGC or to any other person or entity have
          been incurred as a result of the termination of any Employee
          Benefit Plan; (ii) no Pension Plan, which is subject to the
          minimum funding requirements of Part 3 of Subtitle B of Title I of
          ERISA or subject to Section 412 of the Code, has incurred any
          "accumulated funding deficiency" within the meaning of Section 302
          of ERISA or Section 412 of the Code and there has been no waived
          funding deficiency within the meaning of Section 303 of ERISA or
          Section 412 of the Code; and (iii) there has been no event with
          respect to a Pension Plan which would require disclosure under
          Sections 4062(c), 4063(a) or 4041(e) of ERISA.

                         (f)  All reports and information required to be
          filed with the DOL, IRS and PBGC and distributed to plan
          participants and their beneficiaries with respect to each Employee
          Benefit Plan required to be listed on the NII Disclosure Statement
          have been filed and/or distributed and the financial statements
          contained in all annual reports (Form 5500 series) of such
          Employee Benefit Plans were certified without qualification by
          each Employee Benefit Plan's accountants and actuaries.  There has
          been no material change with regard to any such Employee Benefit
          Plan since the last annual report.

                         (g)  All Employee Benefit Plans required to be
          listed on the NII Disclosure Statement may, without liability, be
          amended, terminated or otherwise discontinued except as
          specifically prohibited by federal law.

                         (h)  Any bonding required under ERISA with respect
          to any Employee Benefit Plan required to be listed on the NII
          Disclosure Statement has been obtained and is in full force and
          effect and no funds held by or under the control of NII, any of


                                         -21-





          the other Acquired Companies or any ERISA Affiliate are plan
          assets.

                         (i)  Neither NII, any of the other Acquired
          Companies nor any ERISA Affiliate maintains any retired life
          and/or retired health insurance plans which provide for continuing
          benefits or coverage for any employee or beneficiary of NII, any
          of the other Acquired Companies or any ERISA Affiliate.

                         (j)  The consummation of the transactions
          contemplated by this Agreement will not, alone or together in any
          event, (i) entitle any employee of NII, any of the other Acquired
          Companies or any ERISA Affiliate to severance pay, unemployment
          compensation or any other payment, (ii) accelerate the time of
          payment or vesting, or increase the amount of compensation due to
          any such employee, officer or director or (iii) result in any
          liability of NII, any of the other Acquired Companies or any ERISA
          Affiliate under Title IV of ERISA or otherwise.

                         (k)  Neither NII, any of the other Acquired
          Companies nor any ERISA Affiliate is bound by any collective bar-
          gaining agreement or legally binding arrangement to maintain or
          contribute to any Employee Benefit Plan.

                         (l)  There has been no violation of the "continu-
          ation coverage requirements" of section 4980B of the Code and Part
          6 of Subtitle B of Title I of ERISA with respect to any Welfare
          Plan to which such continuation coverage requirements apply.

                         (m)  All spousal consents required in connection
          with distributions of funds from profit sharing accounts under the
          NII Employee Stock Ownership Plan (the "ESOP") or from the
          accounts under its predecessor plans have been obtained in a
          timely fashion.

                         (n)  There has been no violation of the health
          insurance obligations imposed by section 9801 of the Code and Part
          7 of Subtitle B of Title I of ERISA ("HIPAA") with respect to any
          Welfare Plan which is a group health plan (as defined under
          section 5000(b)(1) of the Code or Part 6 of Subtitle B of Title I
          of ERISA) to which such insurance obligations apply.

                         (o)  The trustees for the ESOP will be required at
          the NII Shareholders' Meeting to allocate the vote of the NII
          Common Shares held of record by the ESOP in accordance with the
          vote of the ESOP participants as a result of the ESOP
          Solicitation.  Following the NII Shareholders' Meeting, such
          trustees will assert dissenters' rights only in respect of the NII
          Common Shares of which the ESOP is the record owner that are
          allocated to the accounts of participants that previously
          instructed the trustees to vote such shares against the Merger and


                                         -22-





          that affirmatively asserted dissenters rights when the trustees
          informed them of their rights with respect thereto.

                    2.23 Relationships With Related Persons.

                         (a)  Except as described in Section 2.23 of the NII
          Disclosure Statement, no present or former officer, director or
          shareholder of any Acquired Company, no member of the immediate
          family of any such Person, and no Person controlling, controlled
          by or under common control with, directly or indirectly, any of
          the foregoing (collectively "Affiliated Persons") has, or has had
          since October 31, 1993, any interest in any property (whether
          real, personal, or mixed and whether tangible or intangible) or
          assets used in or pertaining to any Acquired Company's business. 
          Except as described in Section 2.23 of the NII Disclosure
          Statement, no Affiliated Person owns, or since October 31, 1993
          has owned, of record or as a beneficial owner, an equity interest
          or any other financial or profit interest in any Person that has
          (i) had business dealings or a material financial interest in any
          transaction with any Acquired Company, or (ii) engaged in
          competition with any Acquired Company with respect to any line of
          the products or services of any Acquired Company (a "Competing
          Business") in any market presently served by any Acquired Company
          except for less than one percent of the outstanding capital stock
          of any Competing Business that is publicly traded on any
          recognized exchange or in the over-the-counter market.

                         (b)  Except as set forth in Section 2.23 of the NII
          Disclosure Statement, no Affiliated Person is a party to any
          Contract with, or has any claim or right against, any Acquired
          Company other than, in the case of Affiliated Persons who are
          employed by an Acquired Company and disclosed in Section 2.23 of
          the NII Disclosure Statement, accrued compensation and benefits
          payable in the ordinary course of business and reflected on such
          Acquired Company's books and records.

                    2.24 Environmental Matters.

                         (a)  Except as described in Section 2.24 of the NII
          Disclosure Statement:

                              (i)  Each of the Acquired Companies, including
          all of its businesses and operations, is, and at all times since
          October 31, 1995 and, to the knowledge of the Acquired Companies,
          between October 31, 1993 and October 31, 1995, has been operated
          in compliance with all Environmental Laws (as defined below);

                              (ii)  There are no conditions on, about,
          beneath or arising from any of the premises owned, used or leased
          by any of the Acquired Companies (collectively, the "Premises")
          which might, under any Environmental Law, (A) give rise to
          liability of or the imposition of a statutory lien on any Acquired

                                         -23-





          Company, or (B) which would or might require any "Response,"
          "Removal" or "Remedial Action" (as those terms are defined below)
          or any other action by any Acquired Company, including, without
          limitation, reporting, monitoring, cleanup or contribution;

                              (iii)  There were no conditions on, about,
          beneath or arising from any real property which was, but is no
          longer, owned, used or leased to or by any of the Acquired
          Companies ("Former Real Property"), during the period of such
          ownership, use, or lease, which might, under any Environmental
          Law, (A) give rise to liability of or the imposition of a
          statutory lien on any Acquired Company, or (B) which would or
          might require any "Response," "Removal" or "Remedial Action" or
          any other action by any Acquired Company, including without
          limitation reporting, monitoring, cleanup or contribution;

                              (iv)  None of the Acquired Companies has
          received any notification of a release or threat of a release of a
          "Hazardous Substance" (as defined below) with respect to the
          Premises or the Former Real Property;

                              (v)  No Hazardous Substances have been used,
          handled, generated, processed, treated, stored, transported to or
          from, released, discharged or disposed of by any of the Acquired
          Companies or, to the knowledge of the Acquired Companies, any
          third party on, about or beneath the Premises;

                              (vi)  During the ownership, use or lease of
          the Former Real Property by any of the Acquired Companies, no
          Hazardous Substances were used, handled, generated, processed,
          treated, stored, transported to or from, released, discharged or
          disposed of by any of the Acquired Companies or, to the knowledge
          of the Acquired Companies, any third party on, about or beneath
          the Former Real Property;

                              (vii)  There are no above or underground
          storage tanks or transformers containing or contaminated with PCBs
          on, about or beneath the Premises.  During the ownership, use or
          lease of the Former Real Property by any of the Acquired
          Companies, there were no above or underground storage tanks, or
          transformers containing or contaminated with PCBs on, about or
          beneath the Former Real Property owned by any Acquired Company or,
          to the knowledge of the Acquired Companies, leased to any Acquired
          Company;

                              (viii)  None of the Acquired Companies has
          received notice or otherwise has knowledge of:

                                   (A)     any claim, demand, investigation,
          enforcement, Response, Removal, Remedial Action, statutory lien or
          other governmental or regulatory action instituted or threatened


                                         -24-





          against any of the Acquired Companies, the Premises or any Former
          Real Property pursuant to any of the Environmental Laws;

                                   (B)     any claim, demand, suit or
          action, made or threatened by any Person against any of the
          Acquired Companies, the Premises or any Former Real Property
          relating to (1) any form of damage, loss or injury resulting from,
          or claimed to result from, any Hazardous Substance on, about,
          beneath or arising from the Premises or any Former Real Property
          or (2) any alleged violation of the Environmental Laws by any of
          the Acquired Companies; or

                                   (C)     any communication to or from any
          governmental or regulatory agency arising out of or in connection
          with Hazardous Substances on, about, beneath, arising from or
          generated at the Premises or any Former Real Property, including
          without limitation, any notice of violation, citation, complaint,
          order, directive, request for information or response thereto,
          notice letter, demand letter or compliance schedule; and

                              (ix)  No wastes generated by any of the
          Acquired Companies have ever been directly or indirectly sent,
          transferred, transported to, treated, stored or disposed of at any
          site listed or formally proposed for listing on the National
          Priority List promulgated pursuant to CERCLA or to any site listed
          in any state list of sites requiring or recommended for
          investigation or clean-up.

                         (b)  As used in this Agreement:

                              (i)  The term "Environmental Laws" shall mean
          any and all Laws and Authorizations concerning or relating to
          industrial hygiene or the protection of health and/or the
          environment, including, but not limited to, the Comprehensive
          Environmental Response, Compensation and Liability Act, 42 U.S.C.
          9601 et seq., as amended ("CERCLA"), the Resource Conservation
          and Recovery Act, 42 U.S.C. 6901 et. seq., as amended, the
          Federal Water Pollution Control Act, 33 U.S.C. 1251 et seq., as
          amended, the Clean Air Act, 42 U.S.C. 7401 et seq., as amended,
          the Toxic Substances Control Act, 15 U.S.C. 2601 et seq., as
          amended, the Federal Insecticide, Fungicide and Rodenticide Act, 7
          U.S.C. 136 et seq., as amended, or the Safe Drinking Water Act,
          42 U.S.C. 300 et seq., as amended, or regulations promulgated
          thereunder.

                              (ii)  The terms "Response," "Removal" and
          "Remedial Action" shall have the meanings ascribed to them in
          Sections 101(22)-101(25) of CERCLA.

                              (iii)  The term "Hazardous Substances" or
          "Hazardous Substance" shall mean any substance regulated under any
          of the Environmental Laws, including, without limitation, any

                                         -25-





          substance which is:  (A) petroleum, asbestos or asbestos-
          containing material, urea formaldehyde or polychlorinated
          biphenyls; (B) a "hazardous substance," "pollutant" or
          "contaminant" (as defined in Sections 101(14), (33) of CERCLA or
          the regulations designated pursuant to Section 102 of CERCLA),
          including any element, compound, mixture, solution or substance
          that is or may be designated pursuant to Section 102 of CERCLA;
          (C) listed in the United States Department of Transportation
          Hazardous Material Tables, 49 C.F.R. 172.101; (D) defined,
          designated or listed as a "hazardous waste" pursuant to the
          Resource Conservation and Recovery Act, as amended (42 U.S.C.
          6901, 6921,5903(5)); (E) listed as a "hazardous air pollutant"
          under Section 112 of the Clean Air Act, as amended; or (F) does or
          may physically, chemically, biologically or otherwise breakdown
          and transform into, or otherwise produce, become, promote or
          result in the presence or an increase of any of the above when
          released on, at, beneath or to the environment.

                    2.25 Absence of Certain Changes and Events

                         (a)  Except as described in Section 2.25 of the NII
          Disclosure Statement and except as otherwise expressly provided
          herein, since October 31, 1996, each of the Acquired Companies has
          conducted its business only in the usual and ordinary course
          consistent with past practice and there has not been any:

                              (i)  declaration or payment of any dividend or
          other distribution or payment in respect of the shares of capital
          stock of any of the Acquired Companies, or any repurchase or
          redemption of any such shares of capital stock;

                              (ii)  amendment to the certificate or articles
          of incorporation, bylaws or other organizational document of any
          of the Acquired Companies;

                              (iii)  payment or increase by any Acquired
          Company of any bonuses, salaries, or other compensation (except
          for payment of salary in the ordinary course consistent with past
          practice) to any shareholder, director, officer or employee of any
          Acquired Company or entry into (or amendment of) any employment,
          severance or similar agreement with any director, officer or
          employee of any Acquired Company;

                              (iv)  adoption of, change in or increase in
          the payments to or benefits under any Employee Benefit Plan or
          labor policy of any Acquired Company;

                              (v)  damage, destruction or loss to any
          material asset or property of any Acquired Company, whether or not
          covered by insurance;



                                         -26-





                              (vi)  entry into, amendment, termination or
          receipt of notice of termination of, any Contract which is
          required to be disclosed in the NII Disclosure Statement or which
          relates to any material transaction, whether or not in the
          ordinary course of business;

                              (vii)  sale (other than sales of inventory in
          the ordinary course of business), assignment, conveyance, lease,
          or other disposition of any asset or property of any Acquired
          Company or mortgage, pledge, or imposition of any lien or other
          encumbrance on any asset or property of any of the Acquired
          Companies;

                              (viii)  cancellation or waiver of any claims
          or rights with a value to any Acquired Company in excess of $5,000
          (either individually or collectively);

                              (ix)  change in the accounting methods,
          principles or practices followed by any Acquired Company or any
          change in any of the assumptions underlying, or methods of
          calculating, any bad debt, contingency or other reserve;

                              (x)  prepayment of any amount due to any
          suppliers of, or other Persons providing goods or services not yet
          received to, any Acquired Company;

                              (xi)  change in the manner in which the ESOP
          is administered, including, without limitation, any increase in
          the amounts contributed by NII to the ESOP; or

                              (xii)  agreement, whether or not in writing,
          to do any of the foregoing.

                         (b)  Since October 31, 1996, there has not been any
          material adverse change in the business, operations, properties,
          assets, working capital, or condition (financial or otherwise) of
          any Acquired Company or any event, condition or contingency that
          is likely to result in such a material adverse change.

                    2.26 Books and Records.  The books and records of each
          Acquired Company, including financial records and books of
          account, are complete and accurate in all material respects and
          have been maintained in accordance with sound business practices. 
          Such books and records accurately and fairly reflect its income,
          expenses, assets and liabilities and each Acquired Company
          maintains internal accounting controls which provide reasonable
          assurance that:  (a) transactions are executed in accordance with
          management's authorization; (b) transactions are recorded as
          necessary to permit preparation of reliable financial statements
          and to maintain accountability for earnings and assets; (c) access
          to assets is permitted only in accordance with management's
          authorization; (d) the recorded accountability of all assets is

                                         -27-





          compared with existing assets at reasonable intervals; and (e)
          except as described in Section 2.26 of the NII Disclosure State-
          ment, all intercompany transactions, charges and expenses among or
          between any Acquired Company and any Affiliated Person are
          accurately reflected at fair arms length value in all financial
          statements.

                    2.27 Insurance.

                         (a)  Section 2.27(a) of the NII Disclosure
          Statement contains a complete and accurate list of all policies
          and binders of insurance (including, without limitation, property,
          casualty, liability, life, health, accident, workers' compensation
          and disability insurance and bonding arrangements) owned by or
          maintained for the benefit of any Acquired Company or to which any
          Acquired Company is a party or under which any Acquired Company,
          or any director thereof, is covered.

                         (b)  Section 2.27(b) of the NII Disclosure
          Statement describes each Contract or arrangement, other than a
          policy of insurance, for the transfer or sharing of any insurance
          risk by any Acquired Company.

                         (c)  Section 2.27(c) of the NII Disclosure
          Statement sets forth, by year for the current policy year and each
          of the two preceding policy years:

                              (i)  a summary of the loss experience under
          each policy;

                              (ii)  a statement describing each claim under
          an insurance policy for an amount in excess of $5,000, which sets
          forth:  (A) the name of the claimant; (B) the description of the
          policy by insurer, type of insurance, and period of coverage; and
          (C) the amount and a brief description of the claim; and 

                              (iii)  a statement describing the loss
          experience for all claims that were self-insured, including the
          number and aggregate cost of such claims.

                         (d)  Section 2.27(d) of the NII Disclosure
          Statement describes all obligations of any Acquired Company to
          provide coverage to third parties (such as, for example, under
          leases or service agreements) and identifies the policy under
          which such coverage is provided.

                         (e)  Section 2.27(e) of the NII Disclosure
          Statement describes any self-insurance arrangement by or affecting
          any Acquired Company, including any reserves established
          thereunder.



                                         -28-





                         (f)  Except as set forth on Section 2.27(f) of the
          NII Disclosure Statement:

                              (i)  All policies to which any Acquired
          Company is a party or that provide coverage to any Acquired
          Company or director thereof: 

                                   (A)     are issued by an insurer that is
                                           financially sound and reputable;

                                   (B)     are valid, outstanding, and
                                           enforceable;

                                   (C)     taken together, provide adequate
                                           insurance coverage for the assets
                                           and the operations of such
                                           Acquired Company for all risks to
                                           which such Acquired Company is
                                           normally exposed;

                                   (D)     are sufficient for compliance
                                           with all laws and contracts,
                                           agreements and commitments to
                                           which such Acquired Company is a
                                           party or by which it is bound;
                                           and

                                   (E)     will continue in full force and
                                           effect following the Closing and
                                           the Merger.

                              (ii)  No Acquired Company has received within
          the last three years (A) any refusal of coverage or any notice
          that a defense will be afforded with reservation of rights; (B)
          any notice that an issuer of any insurance policy has filed for
          protection under applicable bankruptcy laws or is otherwise in the
          process of liquidating or has been liquidated; (C) any notice of
          cancellation or any other indication that any insurance policy is
          no longer in full force and effect or that the issuer of any
          policy is not willing or able to perform its obligations
          thereunder; or (D) any notice from an insurer to discontinue any
          coverage afforded to such Acquired Company or director thereof.

                              (iii)  Each Acquired Company has paid all
          premiums due, and has otherwise performed its obligations, under
          each policy listed or required to be listed in Section 2.27 of the
          NII Disclosure Statement.

                              (iv)  Each Acquired Company has given timely
          notice to the insurer of all existing claims of which it has
          knowledge.


                                         -29-





                    2.28  Brokers.  No person acting on behalf of any
          Acquired Company, any Affiliated Party or any of their affiliates
          or under the authority of any of the foregoing is or will be
          entitled to any brokers' or finders' fee or any other commission
          or similar fee, directly or indirectly, from any of such parties
          in connection with any of the transactions contemplated by this
          Agreement, other than Harris Roja Corporation.

                    2.29  Information Supplied.  None of the information
          supplied or to be supplied by any Acquired Company specifically
          for inclusion or incorporation by reference in (i) the
          registration statement on Form S-4, or other appropriate form, to
          be filed with the Securities and Exchange Commission ("SEC") by
          Parent in connection with the issuance of Parent Common Shares in
          the Merger (the "Registration Statement") will (except to the
          extent revised or superseded by amendments or supplements
          contemplated hereby), at the time the Registration Statement is
          filed with the SEC, at any time it is amended or supplemented and
          at the time it becomes effective under the Securities Act, contain
          any untrue statement of a material fact or omit to state any
          material fact required to be stated therein or necessary to make
          the statements therein, in light of the circumstances under which
          they are made, not misleading, or (ii) the joint proxy statement
          to be used by Parent and NII to solicit any required approval of
          their respective shareholders as contemplated by this Agreement
          (the "Proxy Statement") will (except to the extent revised or
          superseded by amendments or supplements contemplated hereby), at
          the date it is first mailed to Parent's and NII's shareholders and
          at the time of the meeting of Parent's and NII's shareholders,
          contain any untrue statement of a material fact or omit to state
          any material fact required to be stated therein or necessary in
          order to make the statements therein, in light of the
          circumstances under which they are made, not misleading.

                    2.30  Voting Requirements.  The affirmative vote of the
          holders of a majority of the outstanding NII Common Shares at a
          duly convened meeting of the NII shareholders or any adjournment
          or postponement thereof to approve and adopt this Agreement and
          the Merger Agreement is the only vote of the holders of any class
          or series of NII's capital stock necessary to approve this
          Agreement and the Merger Agreement and the transactions
          contemplated hereby and thereby. 

                    2.31  Accounting Matters.  None of the Acquired
          Companies and none of the Principal Shareholders has taken or
          agreed to take any action that, to the knowledge of the Acquired
          Companies after consultation with NII's independent public
          accountants, would prevent the business combination to be effected
          by the Merger to be accounted for as a pooling of interests. 

                    2.32  Full Disclosure.  All documents and other papers
          delivered by or on behalf of NII in connection with the

                                         -30-





          transactions contemplated by this Agreement are accurate and
          complete and are authentic.  No representation or warranty of NII
          contained in this Agreement or the NII Disclosure Statement
          contains any untrue statement or omits to state a fact necessary
          in order to make the statements herein or therein, in light of the
          circumstances under which they were made, not misleading.

                    2.33 Knowledge.  For purposes of this Agreement, "to the
          knowledge of the Acquired Companies" and correlative terms shall
          mean the actual knowledge of any and all Principal Shareholders,
          after due inquiry.


               SECTION 3.  REPRESENTATIONS AND WARRANTIES OF PARENT AND 
                           MERGER SUB.

                    Parent and Merger Sub hereby jointly and severally
          represent and warrant to NII as follows:

                    3.1  Organization and Good Standing.  Each of Parent and
          Merger Sub is a corporation duly organized, validly existing and
          in good standing under the laws of its jurisdiction of
          incorporation and has all necessary corporate power and authority
          to carry on its business as presently conducted, to own, lease and
          operate all of the properties and the assets that it owns or
          leases and to perform all its obligations under each agreement and
          instrument by which it is bound.

                    3.2  Power and Authorization.  Each of Parent and Merger
          Sub has all requisite corporate power to execute, deliver and
          perform its obligations under this Agreement, the Merger Agreement
          and all other agreements and documents required to be delivered by
          it prior to or at the Closing (collectively, the "Acquiror
          Transaction Documents").  The execution, delivery and performance
          by Parent and Merger Sub of the Acquiror Transaction Documents
          have been duly authorized by all necessary corporate action on the
          part of Parent and Merger Sub.  This Agreement has been duly and
          validly executed and delivered by Parent and Merger Sub and,
          assuming due authorization, execution and delivery thereof by the
          other parties hereto, constitutes the legal, valid and binding
          obligation of each of Parent and Merger Sub, enforceable against
          each of them in accordance with its terms.  When executed and
          delivered as contemplated herein, each of the other Acquiror
          Transaction Documents shall, assuming due authorization, execution
          and delivery by the other parties thereto, constitute the legal,
          valid and binding obligation of each of Parent and Merger Sub that
          is a party thereto, enforceable against each of them that is a
          party thereto in accordance with its terms.





                                         -31-





                    3.3  No Conflict; Consents and Approvals.

                         (a)  Subject to paragraph (b) below, the execution
          and delivery of this Agreement do not, and the execution and
          delivery of the other Acquiror Transaction Documents and the
          consummation of the transactions contemplated by the Acquiror
          Transaction Documents will not (with or without the passage of
          time or the giving of notice):  (i) violate or conflict with the
          articles of incorporation or bylaws (or other organizational
          documents) of Parent or Merger Sub or any Law applicable to Parent
          or Merger Sub or by or to which any material properties or assets
          of Parent or Merger Sub are bound or subject; or (ii) except as
          would not result in a material adverse effect on the financial
          condition or results of operations of Parent and its subsidiaries
          taken as a whole (a "Parent Material Adverse Effect") or as will
          be cured or waived prior to the Closing, violate or conflict with,
          result in a breach of, or constitute a default or otherwise cause
          any loss of benefit under or give to others any rights in or with
          respect to, any Contract to which Parent or Merger Sub is a party
          or by which any assets or properties of Parent or Merger Sub are
          bound or affected.

                         (b)  The execution and delivery of this Agreement
          by Parent and Merger Sub do not, and the execution and delivery by
          Parent and Merger Sub of the other Acquiror Transaction Documents
          and the consummation by Parent and Merger Sub of the transactions
          contemplated by the Acquiror Transaction Documents will not,
          require Parent or Merger Sub to obtain any consent, license,
          permit, waiver, approval, authorization or order of, or to make
          any filing, registration or declaration with or notification to,
          any court, government, governmental agency or instrumentality
          (federal, state, local or foreign), except for (i) the filing with
          the SEC of the Registration Statement provided for in Section 4.4
          hereof and the obtaining from the SEC of such orders as may be
          required in connection therewith, (ii) filings or other actions
          required under the Exchange Act, (iii) filings or other action
          required by the American Stock Exchange, (iv) the filing of such
          documents with, and the obtaining of such orders from, the various
          state and foreign authorities, including state securities
          authorities, that may be required under state securities and blue
          sky laws or similar foreign laws in connection with the
          transactions contemplated by this Agreement, (v) the pre-merger
          notification requirements of the HSR Act, (vi) the filing and
          recordation of appropriate merger documents as required under
          California law and (vii) any such consent, license, permit,
          waiver, approval, authorization, order, registration,
          notification, filing or declaration, the failure to obtain or make
          which would not prevent or delay consummation of the Merger or
          otherwise prevent Parent or Merger Sub from performing any of
          their respective obligations under the Acquiror Transaction
          Documents and would not result in a Parent Material Adverse
          Effect.

                                         -32-





                         (c)  There are no actions, proceedings or investi-
          gations pending or, to the knowledge of Parent, threatened, that
          question any of the transactions contemplated by this Agreement or
          the validity of any of the Acquiror Transaction Documents or
          which, if adversely determined, could reasonably be expected to
          have a material adverse effect upon Parent's or Merger Sub's
          ability to enter into or perform their respective obligations
          under the Acquiror Transaction Documents.

                    3.4  Capitalization.  The authorized capital stock of
          Parent consists of 1,000,000 Preferred Shares, par value $1 per
          share ("Parent Preferred Shares"), and 10,000,000 Common Shares,
          par value $1 per share ("Parent Common Shares").  No Parent
          Preferred Shares are issued or outstanding.  The authorized
          capital stock of Merger Sub consists of 100 shares of capital
          stock, no par value, all of which have been duly authorized and
          validly issued, are fully paid and non-assessable by Merger Sub
          and are owned by Parent (but will be contributed by Parent to
          Widmar immediately following the consummation of the Stock
          Acquisition and immediately prior to the consummation of the
          Merger).

                    3.5  Parent Common Shares.  The Parent Common Shares to
          be delivered upon the consummation of the Merger have been duly
          authorized and will, when so delivered, be validly issued and
          outstanding, fully paid and nonassessable by Parent.

                    3.6  SEC Reports; Financial Statements.  The Parent
          Common Shares are registered under Section 12 of the Exchange Act. 
          Parent has provided to NII true and complete copies (without
          exhibits) of the reports and proxy statements filed by Parent with
          the SEC pursuant to Sections 13(a) and 14(a) of the Exchange Act
          since December 31, 1995 (collectively, the "SEC Reports").  None
          of the SEC Reports as of their respective dates contained any
          untrue statement of a material fact or omitted to state a material
          fact required to be stated therein or necessary to make the
          statements therein, in light of the circumstances under which they
          were made, not misleading.  Each of the consolidated balance
          sheets (including the related notes) included in the SEC Reports
          fairly presents the consolidated financial position of Parent and
          its subsidiaries as of the respective dates thereof, and the other
          related consolidated statements (including the related notes)
          included therein fairly present the results of operations and the
          cash flows of Parent and its subsidiaries for the respective
          periods or as of the respective dates set forth therein, all in
          conformity with GAAP consistently applied during the periods
          involved except (i) as otherwise noted therein, (ii) in the case
          of unaudited statements, as permitted by Form 10-Q of the SEC and
          (iii) in the case of unaudited statements, to all adjustments
          (consisting of normal recurring adjustments) necessary to present
          fairly Parent's consolidated financial position.


                                         -33-





                    3.7  Absence of Changes.  Except as Parent may otherwise
          have advised NII prior to the date hereof or as set forth in the
          SEC Reports, since June 30, 1997, there has not been any material
          adverse change in the business, operations, properties, assets,
          working capital or condition (financial or otherwise) of Parent
          and its subsidiaries, taken as a whole, or any event, condition or
          contingency that is likely to result in such a material adverse
          change.

                    3.8  Brokers.  No Person acting on behalf of Parent or
          any of its affiliates or under the authority of any of the fore-
          going is or will be entitled to any brokers' or finders' fee or
          any other commission or similar fee, directly or indirectly, from
          any of such parties in connection with any of the transactions
          contemplated by this Agreement.

                    3.9  Information Supplied.  None of the information
          supplied or to be supplied by Parent or Merger Sub specifically
          for inclusion or incorporation by reference in (i) the
          Registration Statement will (except to the extent revised or
          superseded by amendments or supplements contemplated hereby), at
          the time the Registration Statement is filed with the SEC, at any
          time it is amended or supplemented and at the time it becomes
          effective under the Securities Act, contain any untrue statement
          of a material fact or omit to state any material fact required to
          be stated therein or necessary to make the statements therein, in
          light of the circumstances under which they are made, not
          misleading, or (ii) the Proxy Statement will (except to the extent
          revised or superseded by amendments or supplements contemplated
          hereby), at the date it is first mailed to Parent's or NII's
          shareholders and at the time of the meeting of Parent's and NII's
          shareholders contain any untrue statement of a material fact or
          omit to state any material fact required to be stated therein or
          necessary in order to make the statements therein, in light of the
          circumstances under which they are made, not misleading.  The
          Registration Statement and the Proxy Statement will comply as to
          form in all material respects with the requirements of the
          Securities Act and Exchange Act and the rules and regulations
          thereunder, except that no representation is made by Parent or
          Merger Sub with respect to statements made or incorporated by
          reference therein based on information supplied by any Acquired
          Company or any affiliate thereof specifically for inclusion or
          incorporation by reference in the Registration Statement.

                    3.10  Interim Operations of Merger Sub.  Merger Sub was
          formed solely for the purpose of engaging in the transactions
          contemplated hereby, has engaged in no other business activities
          and has conducted its operations only as contemplated hereby.

                    3.11  Accounting Matters.  Parent has not taken nor
          agreed to take any action that, to Parent's knowledge after
          consultation with Parent's certified independent public

                                         -34-





          accountants, would prevent the business combination to be effected
          by the Merger to be accounted for as a pooling of interests.


                                 SECTION 4.  COVENANTS

                    4.1  Conduct of Business by the Acquired Companies. 
          Except as expressly provided herein, between the date hereof and
          the Closing, without the prior written consent of Parent, NII
          shall and shall cause each of the other Acquired Companies to:

                         (a)  maintain its corporate existence, pay and dis-
          charge all debts, liabilities and obligations as they become due
          (including, without limitation, the payment or discharge of trade
          accounts payable but excluding debts, liabilities and obligations
          that NII is contesting in good faith and for which NII has
          established adequate reserves on its books), and operate solely in
          the ordinary course in a manner consistent with past practice and
          the provisions of this Agreement and in compliance with all
          applicable Laws, Authorizations and Contracts (including, without
          limitation, those identified in the NII Disclosure Statement);

                         (b)  maintain its facilities and assets in the same
          state of repair, order and condition as they are on the date
          hereof, reasonable wear and tear excepted;

                         (c)  maintain its books and records in accordance
          with past practice, and to use best efforts to maintain in full
          force and effect all Authorizations and all insurance policies and
          binders; and

                         (d)  use best efforts to preserve intact its
          present business organization and maintain its relations and
          goodwill with the suppliers, customers, employees and others
          having a business relationship with it.

                    4.2  Negative Covenants.  Except as expressly provided
          herein, between the date hereof and the Closing, without the prior
          written consent of Parent, NII shall not, and NII shall not permit
          any of the other Acquired Companies to:

                         (a)  take any action or, to the extent within any
          Acquired Company's reasonable control, permit to occur any event
          which would breach any covenant of NII contained herein or cause
          any representation or warranty of NII contained herein to be
          untrue if made immediately after such event;

                         (b)  make any change in its authorized or issued
          capital stock, grant any stock option or other right to purchase
          shares of its capital stock or other securities, issue or make any
          commitment to issue any capital stock or other securities, or


                                         -35-





          purchase, redeem, retire or make any other acquisition of any
          shares of any capital stock or other securities;

                         (c)  fail to pay or discharge when due any of its
          liabilities or obligations;

                         (d)  incur any indebtedness for borrowed money or
          guarantee any such indebtedness or issue or sell any debt
          securities; or

                         (e)  solicit or encourage (including by way of
          furnishing nonpublic information), or take any other action to
          facilitate (or permit any of its officers, directors or employees
          or any investment banker, financial advisor, attorney, accountant
          or other representative or agent retained by it to do any of the
          foregoing) any inquiries or the making of any proposal which
          constitutes, or may reasonably be expected to lead to, any
          Takeover Proposal (as defined below), or agree or endorse any
          Takeover Proposal, or participate in any discussions or
          negotiations, or provide third parties with any nonpublic
          information, relating to any such inquiry or proposal.  NII shall
          promptly advise Parent orally and in writing of any such inquiries
          or proposals, including all of the material terms thereof.  As
          used in this Agreement, "Takeover Proposal" shall mean any tender
          or exchange offer, proposal for a merger, consolidation, joint
          venture, purchase of substantially all assets of, amalgamation,
          arrangement or other business combination involving NII or any
          other Acquired Company or any proposal or offer to acquire in any
          manner a substantial equity interest in, or a substantial portion
          of the assets of, NII or any other Acquired Company other than the
          transactions contemplated or permitted by this Agreement.

                    4.3  Access to Information; Confidentiality.

                         (a)  NII shall, and shall cause the other Acquired
          Companies to (i) afford to Parent and its officers, directors,
          employees, accountants, consultants, legal counsel, agents and
          other representatives (collectively, the "Acquiror
          Representatives") reasonable access at reasonable times, upon
          reasonable prior notice, to the officers, employees, accountants,
          agents, properties, offices and other facilities of NII and the
          other Acquired Companies and to the books and records thereof and
          (ii) furnish promptly to Parent and the Acquiror Representatives
          such information concerning the business, properties, contracts,
          records, personnel and shareholders of NII and the other Acquired
          Companies (including, without limitation, financial, operating and
          other data and information) as may be reasonably requested, from
          time to time, by Parent.

                         (b)  Each of the Principal Shareholders shall
          provide the Acquiror Representatives with information regarding


                                         -36-





          his or its ownership of NII Common Shares and other information as
          the Acquiror Representatives may reasonably request.

                         (c)  No investigation by Parent made heretofore or
          hereafter shall affect the representations and warranties of NII
          or the Principal Shareholders that are contained herein and each
          such representation and warranty shall survive such investigation.

                         (d)  Except as required by Law, the rules of the
          American Stock Exchange or as otherwise contemplated herein,
          Parent shall prior to Closing afford all confidential information
          relating to any Acquired Company furnished by NII to Parent or the
          Acquiror Representatives (but excluding information that is
          generally known by or available to the public other than as a
          result of disclosure by Parent) the same degree of protection
          against inadvertent or wrongful disclosure as Parent affords its
          own most valuable trade secrets and shall not, except with the
          written consent of NII, disclose all or any portion thereof to any
          Person other than Acquiror Representatives that Parent believes
          should have such information in order to participate in or
          contribute to the transactions contemplated herein.  Such
          information shall be used by Parent and the Acquiror
          Representatives solely for the purpose of evaluating the
          transactions described herein.  Each Acquiror Representative to
          whom such information is disclosed shall be advised, prior to
          receiving such information, of its confidential nature and of the
          terms of this Agreement regarding such information.  In the event
          that this Agreement is terminated, Parent shall (i) return to NII
          all copies of all documents furnished to Parent or the Acquiror
          Representatives by NII reflecting confidential information
          relating to any Acquired Company and (ii) either deliver to NII or
          destroy all copies of all notes, documents and materials prepared
          by or for Parent which reflect, interpret, include or are derived
          from such information.  Parent shall not acquire any license under
          any patent or other Intellectual Property by virtue of NII's
          disclosure of information pursuant to this Section 4.3.

                    4.4  Preparation of the Registration Statement and the
          Prospectus.  Parent shall promptly prepare and file with the SEC
          the Registration Statement registering under the Securities Act
          the Parent Common Shares to be issued in the Merger.  NII and the
          Principal Shareholders shall, and shall cause each of the other
          Acquired Companies to, furnish Parent with all information
          concerning the Acquired Companies and otherwise cooperate as may
          be reasonably requested in connection with the preparation of the
          Registration Statement and the Proxy Statement (including, without
          limitation, obtaining necessary accountants' consents and audited
          financial statements).  Each of Parent and NII shall use
          reasonable efforts to have the Registration Statement declared
          effective under the Securities Act as promptly as practicable
          after such filing.  If at any time prior to the NII Shareholders'
          Meeting or the Parent Shareholders' Meeting any event or

                                         -37-





          circumstance relating to NII or any of its affiliates, or its or
          their respective officers or directors, should be discovered by
          NII that should be set forth in an amendment to the Registration
          Statement, or a supplement to the Proxy Statement, NII shall
          promptly inform Parent of the same.

                    4.5  Conditions to Closing; Consents and Approvals.

                         (a)  Between the date of this Agreement and the
          Closing Date, NII and the Principal Shareholders will use all
          reasonable efforts to cause the conditions in Section 5 to be
          satisfied, and Parent will use all reasonable efforts to cause the
          conditions in Section 6 to be satisfied.  Without limiting the
          generality of the foregoing, William D. McEntire, Bernie A.
          Fredrick, Ronald E. Erickson and Robert E. Tambeau shall each
          execute and deliver at the Closing an Employment Agreement
          substantially in the form set forth in Exhibit B hereto, and
          Parent and William D. McEntire shall execute and deliver at the
          Closing an Escrow Agreement substantially in the form set forth in
          Exhibit C hereto (the "Escrow Agreement").

                         (b)  As promptly as practicable after the date of
          this Agreement, each party will make all filings required by Law
          to be made by them in order to consummate the transactions
          contemplated herein (including all filings under the HSR Act to
          the extent not made prior to the date hereof); provided that
          Parent shall have the right, in its sole discretion, to determine
          whether or not to comply with a second request for information
          under the HSR Act.  Between the date of this Agreement and the
          Closing Date, each party will cooperate with the other parties
          (and their affiliates) in connection with all filings required by
          Law to be made by the other parties (and their affiliates) to
          consummate the transactions contemplated herein; provided that
          nothing in this Agreement shall require Parent or any of its
          affiliates to dispose of or make any change in any portion of its
          business or to incur any material burden in order to obtain any
          consent, approval, license, waiver or other authorization.  NII
          and the Principal Shareholders will take all actions requested by
          Parent with respect to early termination of any applicable waiting
          period under the HSR Act.  As promptly as practicable after the
          date of this Agreement, each party shall use all reasonable
          efforts to obtain all consents, approvals, waivers and other
          authorizations of all third parties necessary to be obtained by
          such party for the consummation of the transactions contemplated
          herein.

                         (c)  NII shall use its best efforts to obtain prior
          to Closing waivers, in form and substance satisfactory to Parent
          ("Waivers"), from all applicable NII shareholders of all
          preemptive rights under the CGCL and the NII articles of
          incorporation in respect of all issuances of NII Common Shares by
          NII.

                                         -38-





                    4.6  Notifications.  Each party hereto shall give prompt
          notice to the other parties upon becoming aware of: (i) any fact
          or condition that causes or constitutes (or that reasonably could
          be expected to cause or constitute) a breach of its or his
          representations and warranties set forth herein, or the
          occurrence, or failure to occur, of any fact or condition that
          would (except as expressly contemplated by this Agreement) cause
          or constitute a breach of or any inaccuracy in any of its or his
          representations and warranties contained in this Agreement had
          such representation or warranty been made as of the time of
          occurrence or discovery of such fact or condition; (ii) any
          material failure of it or him or any of its officers, directors,
          employees or agents, to comply with or satisfy any covenant,
          condition or agreement to be complied with or satisfied by it or
          him hereunder; (iii) any notice or other communication from any
          governmental or regulatory agency or authority in connection with
          the transactions contemplated by this Agreement; and (iv) any
          actions, suits, claims, investigations or proceedings commenced
          or, to the best of its or his knowledge, threatened against,
          relating to or involving or otherwise affecting any Acquired
          Company, or any of the transactions contemplated by this
          Agreement.

                    4.7  Shareholders' Meetings.

                         (a)  Parent will promptly following the date of
          this Agreement establish a record date for, duly call, give notice
          of, convene and hold a meeting of its shareholders (the "Parent
          Shareholders Meeting") to be held as soon as is reasonably
          practicable after the date on which the Registration Statement
          becomes effective for the purpose of obtaining the approval of the
          transactions contemplated by this Agreement by its shareholders. 
          Parent will, through its Board of Directors, recommend to its
          shareholders such approval.

                         (b)  NII will promptly following the date of this
          Agreement establish a record date for, duly call, give notice of,
          convene and hold a meeting of its shareholders to be held as soon
          as is reasonably practicable after the date on which the
          Registration Statement becomes effective (the "NII Shareholders'
          Meeting") for the purpose of obtaining the approval and adoption
          of this Agreement and the Merger Agreement by its shareholders. 
          NII will, through its Board of Directors, recommend to its
          shareholders approval and adoption of this Agreement and the
          Merger Agreement. 

                         (c)  At the NII Shareholders' Meeting, each of the
          Principal Shareholders shall vote, or cause to be voted, in favor
          of approval and adoption of this Agreement and the Merger
          Agreement, all NII Common Shares that such shareholder owns as of
          the record date of the NII Shareholders' Meeting.  For purposes of
          the previous sentence, each of the Principal Shareholders shall be

                                         -39-





          deemed to "own" all NII Company Shares that he owns of record and
          all other NII Common Shares over which he has sole voting power
          or, combined with another Principal Shareholder, has voting power. 
          Each Principal Shareholder (i) shall not dispose of or in any way
          encumber any NII Common Shares that he owns prior to the
          consummation of the Merger, (ii) shall take no action inconsistent
          with the approval and consummation of the transactions
          contemplated hereby and (iii) shall execute and deliver an
          affiliate letter as contemplated by Section 4.12.  As part of the
          ESOP Solicitation, each of the Principal Shareholders that is a
          participant in the ESOP shall instruct the ESOP trustees to vote
          all shares allocated to his ESOP account in favor of the Merger.

                    4.8  Pooling Letter of NII's Accountants.  NII shall use
          its reasonable efforts to cause to be delivered to Parent a letter
          from Meredith, Cardozo, Lanz & Chiu LLP, addressed to Parent and
          NII, dated as of the Closing Date, stating that such firm concurs
          with management's conclusion that, as of such date, no conditions
          exist with respect to NII or its subsidiaries which would preclude
          NII from being party to a transaction that qualifies as a pooling
          of interests transaction under Opinion 16 of the Accounting
          Principles Board and applicable SEC rules and regulations.

                    4.9  Pooling Letter of Parent's Accountants.  Parent
          shall use its reasonable efforts to cause to be delivered to NII a
          letter from KPMG Peat Marwick LLP, addressed to Parent, dated as
          of the Closing Date, stating that (i) KPMG Peat Marwick LLP
          concurs with management's conclusion that, as of such date, no
          conditions exist which would preclude accounting for the Merger as
          a pooling of interests transaction under Opinion 16 of the
          Accounting Principles Board and applicable SEC rules and
          regulations and (ii) the basis for such a concurrence is KPMG Peat
          Marwick LLP's belief that the criteria for such accounting
          treatment that can be assessed at the date of such letter have
          been met. 

                    4.10  Comfort Letters.  NII and the Principal
          Shareholders shall cause to be delivered to Parent (i) a letter
          from Meredith, Cardozo, Lanz & Chiu LLP, NII's and MRL's
          independent accountants, dated the business day prior to the
          mailing or delivery of the Proxy Statement to NII's and Parent's
          shareholders, in form and substance reasonably satisfactory to
          Parent, stating that the audited consolidated financial statements
          of NII included in the Proxy Statement and the Registration
          Statement comply as to form in all material respects with the
          applicable accounting requirements of the Securities Act and the
          published rules and regulations thereunder, and that, on the basis
          of inquiries of certain officials of NII and the other Acquired
          Companies who have responsibility for financial and accounting
          matters, a reading of (A) the unaudited financial statements
          included in the Proxy Statement and the Registration Statement, if
          any, and (B) the latest available interim unaudited financial

                                         -40-





          statements (if different from those in the Proxy Statement or the
          Registration Statement), and such other procedures and inquiries
          as are specified in such letter, nothing has come to their
          attention which indicates that the financial statements referred
          to in subclause (A) above are not in conformity with GAAP applied
          on a basis substantially consistent with the audited consolidated
          financial statements of NII included in the Proxy Statement and
          the Registration Statement or do not comply as to form in all
          material aspects with the applicable accounting requirements of
          the Securities Act and the published rules and regulations
          thereunder, or that the financial statements or summarized
          financial information referred to in subclause (B) above are not
          stated on a basis substantially consistent with the audited
          consolidated financial statements of NII included in the Proxy
          Statement and the Registration Statement; and (ii) a letter, in
          form and substance reasonably satisfactory to Parent, confirming
          as of a date not more than five days prior to the Closing Date the
          statements contained in the letter delivered pursuant to the
          immediately preceding clause (i).

                    4.11  Additional Financial Statements.  Between the date
          hereof and the Closing, NII shall furnish to Parent as promptly as
          possible and in any event not later than 25 days following the end
          of each quarter an unaudited consolidated balance sheet of NII as
          of the end of such quarter and consolidated statements of revenues
          and expenses, shareholders' equity and cash flow for the period
          beginning July 31, 1997 and ending at the end of such period,
          together with the corresponding period of the preceding fiscal
          year, in each case certified by the chief financial officer of NII
          as having been prepared in accordance with past practices of NII. 
          Such financial statements shall be prepared in conformity with
          GAAP consistently applied and shall fairly present the
          consolidated financial condition and results of operations of NII,
          as of the dates and for the periods covered by such statements
          subject to adjustments (consisting of normal recurring
          adjustments, nonmaterial in nature, necessary to present fairly
          NII's consolidated financial position).

                    4.12  Affiliates.  Not less than 30 days prior to the
          Closing Date, NII shall deliver to Parent a letter identifying all
          Persons who are, in NII's reasonable judgment, at the time this
          Agreement and the Merger Agreement are submitted for approval to
          the shareholders of NII, "affiliates" of NII for purposes of Rule
          145 under the Securities Act or for purposes of qualifying the
          Merger for pooling of interests accounting treatment under Opinion
          16 of the Accounting Principles Board and applicable SEC rules and
          regulations.  NII shall use its best efforts to cause each such
          Person to deliver to Parent, and the Widmar Shareholders shall
          deliver to Parent, at least 30 days prior to the Closing Date a
          written agreement, in form and substance reasonably satisfactory
          to Parent, providing for (i) restrictions on the transfer of their
          Parent Common Shares necessary or advisable to comply with Rule

                                         -41-





          145 under the Securities Act and the requirements for pooling
          treatment and (ii) the appropriate legending of the certificates
          for Parent Common Shares to be issued pursuant to the Merger.

                    4.13  Pooling of Interests.  Each of NII and Parent will
          use reasonable efforts to cause the transactions contemplated by
          this Agreement, including the Merger, to be accounted for as a
          pooling of interests under Opinion 16 of the Accounting Principles
          Board and applicable SEC rules and regulations, and such
          accounting treatment to be accepted by each of NII's and Parent's
          independent public accountants, and by the SEC, respectively, and
          neither NII, any Principal Shareholder nor Parent will voluntarily
          take any action that would cause (to its knowledge after
          consultation with its independent public accountants) such
          accounting treatment not to be obtained. 

                    4.14  NII ESOP.  Prior to the NII Shareholders' Meeting
          but after the Registration Statement has been declared effective,
          NII will cause the ESOP to distribute the Proxy Statement to its
          participants in connection with the solicitation of votes of the
          ESOP participants on the Merger as required under the ESOP (the
          "ESOP Solicitation").

                    4.15 NII Shareholder List; Execution of Acknowledgement
          and Consent.

                         (a)  NII shall deliver to Parent at least seven
          business days prior to the Closing Date a list (the "NII
          Shareholder List") of all holders of NII Common Shares and the
          number of shares held by each such holder as of the Closing Date.

                         (b)  Promptly following the NII Shareholders'
          Meeting, NII shall use all reasonable efforts to cause each NII
          Shareholder other than the Principal Shareholders to execute and
          deliver an Acknowledgement and Consent to this Agreement in the
          form set forth in Exhibit D hereto.

                    4.16 Noncompetition.

                         (a)  During the Relevant Period (as defined below),
          except for the performance of his duties as an employee of MRL,
          Parent or an affiliate of Parent or as expressly consented to in
          writing by Parent, no Applicable Principal Shareholder and none of
          his Affiliates (each as hereinafter defined) shall, directly or
          indirectly:

                              (i)  engage, anywhere in the Territory (as
          defined below), in the manufacture, assembly, design, distribution
          or marketing of any product or equipment substantially similar to
          or in competition with any product or equipment which, at any time
          during the period from the Closing Date until the date such
          Applicable Principal Shareholder ceases, for any reason, to be

                                         -42-





          employed by MRL, Parent or an affiliate of Parent, is
          manufactured, sold or distributed by MRL or any other Acquired
          Company (which jointly and severally are hereinafter referred to
          as the "Group") or any product or equipment which the Group
          develops during such period for future manufacture, sale or
          distribution;

                              (ii)  be or become a stockholder, partner,
          owner, officer, director or employee or agent of, or a consultant
          to or give financial or other assistance to, any Person
          considering engaging in any such activities or so engaged;

                              (iii)  seek in competition with the business
          of the Group to procure orders from or do business with any
          customer of the Group;

                              (iv)  solicit or contact with a view to the
          engagement or employment by any Person of any Person who is an
          employee of the Group; or

                              (v)  seek to contract with or engage (in such
          a way as to adversely affect or interfere with the business of the
          Group as carried on at any time after the date hereof and on or
          prior to the date such Applicable Principal Shareholder ceases,
          for any reason, to be employed by MRL, Parent or an affiliate
          thereof) any Person who has been contracted with or engaged to
          manufacture, assemble, supply or deliver products, goods,
          materials or services to the Group; provided, however, that
          nothing herein shall prohibit such Applicable Principal
          Shareholder and his Affiliates from owning, as passive investors,
          in the aggregate not more than 5% of the publicly-traded stock of
          any corporation so engaged.

          The duration of each Applicable Principal Shareholder's covenants
          set forth in this subparagraph shall be extended by a period of
          time equal to the number of days, if any, during which such
          Applicable Principal Shareholder or any of his Affiliates is in
          violation of the provisions hereof.

                         (b)  For the purposes of this Section 4.16,
          "Territory" means the United States, Europe and the Far East, and
          "Affiliate" means:  (i) any corporation of which an Applicable
          Principal Shareholder owns or otherwise possesses the power to
          direct the vote, directly or indirectly, of an amount of voting
          securities sufficient to elect a majority of the board of
          directors of such corporation, and (ii) any other Person
          controlled by such Applicable Principal Shareholder.  For the
          purposes of this definition of "Affiliate," "control" means the
          power to direct the management and policies of a Person, directly
          or indirectly, whether through the ownership of voting securities,
          by contract or otherwise; provided that, any Person of which such
          Applicable Principal Shareholder owns beneficially or of record,

                                         -43-





          either directly or through one or more intermediaries, more than
          20% of the ownership interests, shall be conclusively presumed to
          be an "Affiliate".  For purposes of this Section 4.16, Applicable
          Principal Shareholder means William D. McEntire, Bernie A.
          Fredrick, Ronald E. Erickson and Robert E. Tambeau, and "Relevant
          Period" means the period commencing on the Closing Date and ending
          three years after the relevant Applicable Principal Shareholder
          ceases, for any reason, to be employed by MRL, Parent or any
          affiliate of Parent.

                         (c)  Each Applicable Principal Shareholder
          acknowledges that damages alone would not be an adequate remedy
          for any breach by him or his Affiliates of his covenants contained
          in this Section 4.16; accordingly, in addition to any other
          remedies which Parent may have, Parent shall be entitled to
          injunctive relief in any court of competent jurisdiction for any
          breach or threatened breach of any such covenants by an Applicable
          Principal Shareholder and/or his Affiliates.  Nothing contained
          herein shall prevent or delay Parent from seeking, in any court of
          competent jurisdiction, specific performance or other equitable
          remedies in the event of any breach or intended breach by an
          Applicable Principal Shareholder or any of his Affiliates of any
          of their obligations hereunder.

                         (d)  Each Applicable Principal Shareholder
          acknowledges that the covenants contained in this Section 4.16 are
          fair and reasonable in light of the consideration paid hereunder
          and in order to protect Parent's investment in the Acquired
          Companies, and the invalidity or unenforceability of any
          particular provision, or part of any provision, of this
          Section 4.16 shall not affect the other provisions or parts
          hereof.  If any provision of this Section 4.16 is determined to be
          invalid or unenforceable by a court of competent jurisdiction by
          reason of the duration or geographical scope of the covenants
          contained therein, such duration or geographical scope, or both,
          shall be considered to be reduced to a duration or geographical
          scope to the extent necessary to cure such invalidity.

                    4.17 NII Disclosure Statement.  Promptly following the
          date hereof and in no event later than October 10, 1997, NII shall
          complete and finalize the NII Disclosure Statement, in form
          satisfactory to Parent, and deliver the same to Parent.  Parent
          shall be entitled to amend Schedule 8.1 hereto to add thereto any
          matters disclosed in the NII Disclosure Statement.

                    4.18 The Stock Acquisition.  

                         (a)  Between the date hereof and the Closing, each
          Widmar Shareholder (i) shall not dispose of or in any way encumber
          any shares of capital stock of Widmar that such Person owns and
          (ii) shall take no action inconsistent with the approval and
          consummation of the transactions contemplated hereby.

                                         -44-





                         (b)  Prior to Closing, the Widmar Shareholders
          shall (i) cause Widmar to discharge, pay and satisfy in full all
          liabilities and obligations of Widmar (whether liquidated,
          unliquidated, accrued, mature, contingent or otherwise) such that
          as of the Closing Widmar shall be free of all liabilities and
          obligations, and (ii) cause Widmar to distribute (by way of
          redemption of Widmar capital stock or otherwise) to the Widmar
          Shareholders, pro rata in accordance with their current share
          ownership interests in Widmar, all of Widmar's assets remaining
          after the satisfaction of liabilities and obligations contemplated
          by subclause (i) other than the NII Common Shares owned by Widmar
          and the assets used in the operation of the Business, such
          distributed assets being immaterial.

                         (c)  At the Closing, each Widmar Shareholder shall
          sell, transfer and deliver to Parent free and clear of all
          Encumbrances all shares of capital stock of Widmar owned by such
          Person, which in the aggregate shall constitute all of the
          outstanding shares of capital stock of Widmar as of the Closing,
          and Parent shall acquire such shares for the consideration set
          forth in paragraph (d) below.

                         (d)  The aggregate purchase price for the Stock
          Acquisition described in subparagraph (c) above will be a number
          of Parent Common Shares (rounded to the nearest whole share) equal
          to the Widmar Percentage (as defined below) of the Aggregate Selas
          Shares (as defined in the Merger Agreement).  Such Parent Common
          Shares shall be allocated among the Widmar Shareholders in
          accordance with the percentage allocation set forth in Schedule
          4.18 hereto and certificates therefor shall be delivered to the
          Widmar Shareholders at Closing, provided, however, that any
          fractional share amount shall be rounded to the nearest whole
          Parent Common Share.  For purposes hereof, the "Widmar Percentage"
          means a percentage equal to the percentage of the aggregate
          outstanding NII Common Shares as of the Closing that Widmar owns
          as of the Closing.

                         (e)  At the Closing, each Widmar Shareholder shall
          deliver to Parent certificates representing all of the shares of
          capital stock of Widmar owned by such Person duly endorsed for
          transfer or with stock powers affixed thereto executed in blank in
          proper form for transfer.

                         (f)  The Widmar Shareholders hereby jointly and
          severally represent and warrant to Parent as follows:

                              (i)  The Widmar Shareholders own the shares of
          capital stock of Widmar ascribed to them on Schedule 4.18,
          beneficially and of record, free and clear of any Encumbrance. 
          Upon delivery to Parent of the certificates for such shares (other
          than any of such shares that are redeemed as contemplated by
          subparagraph (b) above) at the Closing, Parent will acquire good,

                                         -45-





          valid and marketable title to such shares, free and clear of all
          Encumbrances (other than applicable securities law restrictions),
          and such shares shall constitute as of the Closing all of the
          outstanding capital stock of Widmar.  Each Widmar Shareholder has
          the absolute right, authority, power and capacity to sell, assign
          and transfer the shares of Widmar capital stock owned by him or
          her free and clear of all Encumbrances (other than applicable
          securities law restrictions).

                              (ii) Except for this Agreement, there are no
          outstanding options, warrants, rights or other agreements or
          commitments of any nature whatsoever (either firm or conditional)
          obligating Widmar or any shareholder thereof to issue, deliver or
          sell, or cause to be issued, delivered or sold, any share of
          capital stock or other equity securities of Widmar or obligating
          Widmar or any shareholder thereof to grant, extend, or enter into
          any such option, right, warrant, agreement or commitment.  Each of
          the issued shares of capital stock of Widmar has been duly
          authorized and validly issued and is fully paid and nonassessable
          and has not been issued in violation of (nor are any such shares
          subject to) any preemptive or similar rights.

                              (iii)   (A)  Each Widmar Shareholder
          acknowledges that any Parent Common Shares issued to him in
          connection with the Stock Acquisition will not be registered under
          the Securities Act on the grounds that the issuance of such shares
          is exempt from registration pursuant to Section 4(2) of the
          Securities Act or Regulation D promulgated under the Securities
          Act and that the reliance of Parent on such exemptions is
          predicated in part on the Widmar Shareholders' representations,
          warranties, covenants and acknowledgements set forth in this
          section.

                                   (B)     Each Widmar Shareholder is an
          "accredited investor" as defined in Rule 501 promulgated under the
          Securities Act.

                                   (C)     The Parent Common Shares acquired
          by each Widmar Shareholder pursuant to this Section 4.18
          (collectively, the "Stock Acquisition Parent Shares") will be
          acquired for his own account, not as a nominee or agent, and
          without a view to resale or other distribution within the meaning
          of the Securities Act, and the rules and regulations thereunder
          except as contemplated hereunder, and no Widmar Shareholder will
          distribute any of such shares in violation of the Securities Act.

                                   (D)     Each Widmar Shareholder (i)
          acknowledges that the Stock Acquisition Parent Shares will not be
          registered under the Securities Act when issued to such Person as
          contemplated herein and such shares must be held indefinitely by
          him unless they are subsequently registered under the Securities
          Act or an exemption from registration is available, (ii) is aware

                                         -46-





          that any routine sales of such shares made under Rule 144 under
          the Securities Act may be made only in limited amounts and in
          accordance with the terms and conditions for that Rule and that in
          such cases where the Rule is not applicable, compliance with some
          other registration exemption will be required, and (iii) is aware
          that Rule 144 will not be immediately available for use by any
          Widmar Shareholder for resale of such shares.

                                   (E)     Each Widmar Shareholder is well
          versed in financial matters, has had dealings over the years in
          securities, and is fully capable of understanding the type of
          investment represented by the Stock Acquisition Parent Shares and
          the risks involved in connection therewith.

                              (iv) In order to ensure compliance with
          applicable securities law restrictions, no Widmar Shareholder will
          sell or otherwise transfer or dispose of any of the Stock
          Acquisition Parent Shares or any interest therein (unless such
          shares have been registered under the Securities Act) without
          first having complied with either of the following conditions:

                                   (A)     Parent shall have received a
          written opinion of counsel to such Widmar Shareholder in form and
          substance satisfactory to Parent, in the exercise of its
          reasonable judgment, or a copy of a "no-action" or interpretive
          letter of the Commission, specifying the nature and circumstances
          of the proposed transfer and indicating that the proposed transfer
          will not be in violation of any of the registration provisions of
          the Securities Act and the rules and regulations promulgated
          thereunder; or

                                   (B)     Parent shall have received an
          opinion from its own counsel to the effect that the proposed
          transfer will not be in violation of any of the registration
          provisions of the Securities Act and the rules and regulations
          promulgated thereunder.

          Each Widmar Shareholder acknowledges that the certificates
          representing the Stock Acquisition Parent Shares may contain a
          restrictive legend noting the restrictions on transfer described
          in this section and required by federal and applicable state
          securities laws and that appropriate "stop-transfer" instructions
          will be given to Parent's stock transfer agent.

                    4.19 Registration by Parent.  Following Closing, Parent
          shall use all reasonable effort to file a registration statement
          with the Commission on Form S-3 (or other form chosen by Parent)
          in order to register for resale by the Widmar Shareholders in
          "brokers' transactions" or in transactions directly with a "market
          maker" (as defined in paragraphs (f) and (g) of Rule 144 under the
          Securities Act) that number of Stock Acquisition Parent Shares as
          is equal to the number of such shares that such Persons would have

                                         -47-





          been entitled to sell publicly during the one year period
          beginning on the Closing Date if resale of such shares pursuant to
          Rule 144 had been immediately available.  On or prior to Closing,
          Parent and the Widmar Shareholders shall enter into a registration
          rights agreements providing for the foregoing registration and in
          form and substance reasonably satisfactory to Parent.


                 SECTION 5.  CERTAIN CONDITIONS PRECEDENT TO PARENT'S
                             AND MERGER SUB'S OBLIGATIONS.

                    All obligations of Parent and Merger Sub under this
          Agreement to effect the Stock Acquisition and the Merger and to
          take the actions required to be taken by them at Closing are
          subject to the fulfillment (or waiver in writing by a duly
          authorized officer of Parent) at or prior to the Closing of each
          of the following conditions:

                    5.1  Representations and Warranties.  Each of the
          representations and warranties of NII and the Principal
          Shareholders set forth in this Agreement that is qualified by
          materiality shall be true and correct, and each of the
          representations and warranties of NII and the Principal
          Shareholders set forth in this Agreement that is not so qualified
          shall be true and correct in all material respects, in each case
          as of the date of this Agreement and as of the Closing Date as
          though made on and as of the Closing Date.

                    5.2  Performance of Covenants.  NII and each Principal
          Shareholder shall have performed or complied in all material
          respects with all of the agreements, covenants and conditions
          required by this Agreement to be performed or complied with by
          them prior to the Closing.

                    5.3  Officer's Certificates.  NII shall have delivered
          to Parent a certificate of a duly authorized officer of NII, dated
          the Closing Date, certifying as to the fulfillment of the
          conditions specified in Sections 5.1 and 5.2 (other than in
          respect of the matters set forth in Section 4.18), and the Widmar
          Shareholders shall have delivered to Parent a certificate of the
          Widmar Shareholders, dated the Closing Date, certifying as to the
          fulfillment of the conditions specified in Sections 5.1 and 5.2 in
          respect of the matters set forth in Section 4.18.

                    5.4  Parent Shareholder Approval.  The transactions
          contemplated by this Agreement shall have been approved by
          affirmative vote of the Parent's shareholders by the requisite
          vote in accordance with Pennsylvania law and the rules of the
          American Stock Exchange.

                    5.5  Consents and Approvals.  The waiting period under
          the HSR Act shall have expired or been terminated without any

                                         -48-





          request by any governmental agency or authority for any additional
          information concerning such transactions.  Each consent, approval,
          ratification, waiver or other authorization of any Person
          necessary, in the reasonable opinion of Parent, for the
          consummation of the transactions contemplated hereby and the
          continuation of the Business without interruption after the
          Closing in the same manner in which the Business is presently
          conducted and without the imposition or acceleration of any
          liability or obligation on any Acquired Company shall have been
          obtained and shall be in full force and effect, and no such
          consent, approval, ratification, waiver or other authorization:
          (i) shall have been conditioned upon the modification, cancella-
          tion or termination of any Contract, right or Authorization of any
          Acquired Company or Parent or (ii) shall impose on Parent or any
          Acquired Company any condition, provision or requirement not
          presently imposed upon the Acquired Companies or any condition
          that would be more restrictive after the Closing on the Acquired
          Companies than the conditions presently imposed on the Acquired
          Companies.

                    5.6  Legal Matters.  The performance of the Acquiror
          Transaction Documents and the NII Transaction Documents and the
          consummation of the Closing shall not, directly or indirectly
          (with or without notice or lapse of time), violate, contravene,
          conflict with or result in a violation of any Law and shall not
          violate any Order of any court or governmental body of competent
          jurisdiction, and no suit, action, investigation or legal or
          administrative proceeding shall have been brought or threatened by
          any Person (other than by Parent) that questions the validity or
          legality of this Agreement or the transactions contemplated
          hereby.

                    5.7  Employment Agreements.  Each of Messrs. William D.
          McEntire, Bernie Fredrick, Ronald E. Erickson and Robert E. 
          Tambeau shall have entered into an Employment Agreement with MRL
          substantially in the form attached hereto as Exhibit B (the
          "Employment Agreements").  

                    5.8  Due Diligence Review.  Parent's due diligence
          investigation and review of each Acquired Company's business,
          prospects, obligations, capitalization, and properties, including,
          but not limited to, an evaluation of the stock record books,
          minute books, financial records, tax returns, Contracts, leases,
          Authorizations, employment agreements, employee benefit plans, all
          other Contracts material to the operation of the Acquired
          Companies' businesses, compliance with Laws, and environmental
          matters shall have been completed and the results thereof shall be
          acceptable to Parent in its sole discretion.  

                    5.9  Resignation of Directors and Officers.  Parent
          shall have received resignations in writing from such of the


                                         -49-





          officers and directors of the Acquired Companies and Widmar as
          Parent shall have requested.

                    5.10  Opinion of Counsel.  Parent shall have received
          the opinion satisfactory to Parent of Carr, McClellan, Ingersoll,
          Thompson & Horn, Professional Corporation, counsel for NII and the
          Principal Shareholders, dated as of the Closing Date, with respect
          to those matters on Exhibit E hereto.

                    5.11  Pooling Letters.  Parent shall have received the
          letters from the accountants contemplated by Sections 4.8 and 4.9
          hereof.  

                    5.12  Affiliate Letters.  Each person who may be deemed
          to be an affiliate of NII and each of the Widmar Shareholders
          shall have executed and delivered to Parent a letter as
          contemplated by Section 4.12 hereof.

                    5.13  Dissenters' Rights.  The period for assertion of
          dissenters' rights pursuant to Chapter 13 of the CGCL shall have
          expired and the holders of not more than 5% in the aggregate of
          the outstanding NII Common Shares shall have perfected or
          preserved their dissenters' or appraisal rights under the CGCL in
          connection with the Merger.

                    5.14  NII Shareholder Approval. This Agreement and the
          Merger Agreement shall have been approved and adopted by the
          requisite vote of the NII shareholders in accordance with the
          CGCL.

                    5.15  Effectiveness of Registration Statement.  The
          Registration Statement shall have been declared effective by the
          SEC under the Securities Act.  No stop order suspending the
          effectiveness of the Registration Statement shall have been issued
          by the SEC and no proceedings for that purpose shall have been
          initiated by the SEC.

                    5.16  Listing of Parent Common Shares.  The Parent
          Common Shares to be issued in the Merger shall have been approved
          for listing on the American Stock Exchange upon official notice of
          issuance.

                    5.17  Net Worth.  NII's consolidated net worth (total
          assets less total liabilities), calculated in accordance with
          GAAP, shall be at least $5 million as of the Closing.

                    5.18  The Merger Agreement.  The Merger Agreement shall
          have been duly executed and delivered by NII.

                    5.19  Shareholder Signatories.  All of the NII
          shareholders other than Dissenting Shareholders (as defined in the
          Merger Agreement) shall be Shareholder Signatories.

                                         -50-





                    5.20  Escrow Agreement.  The Escrow Agreement shall have
          been duly executed and delivered by the Escrow Agent and the
          Representative.

                    5.21  GAAP Statements.  The GAAP Statements shall have
          been delivered to Parent and shall not differ from the Existing
          Financial Statements in any material respect.  NII's consolidated
          net worth reflected on the Interim NII Balance Sheet shall not be
          less than $5 million.

                    5.22  Waivers.  NII shall have obtained and delivered to
          Parent Waivers duly executed by each applicable NII shareholder
          (present and former).

                    5.23 NII Disclosure Statement.  NII shall have delivered
          the NII Disclosure Statement to Parent, and the NII Disclosure
          Statement shall be in form and substance acceptable to Parent in
          its sole discretion.


                 SECTION 6.   CERTAIN CONDITIONS PRECEDENT TO NII'S
                              OBLIGATIONS.

                    All obligations of NII under this Agreement to effect
          the Merger and to take the actions required to be taken by it at
          Closing are subject to the fulfillment (or waiver in writing by a
          duly authorized officer of NII) at or prior to the Closing of each
          of the following conditions:

                    6.1  Representations and Warranties.  Each of the repre-
          sentations and warranties of Parent and Merger Sub set forth in
          this Agreement that is qualified by materiality shall be true and
          correct, and each of the representations and warranties of Parent
          and Merger Sub set forth in this Agreement that is not so
          qualified shall be true and correct in all material respects, in
          each case as of the date of this Agreement and as of the Closing
          Date as though made on and as of the Closing Date.

                    6.2  Performance of Covenants.  Each of Parent and
          Merger Sub shall have performed or complied in all material
          respects with all of the agreements, covenants and conditions
          required by this Agreement to be performed or complied with by it
          prior to the Closing Date.

                    6.3  Officer's Certificate.  Parent shall have delivered
          to NII a certificate of a duly authorized officer in such person's
          capacity as an officer, dated the Closing Date, certifying as to
          the fulfillment of the conditions specified in Sections 6.1 and
          6.2.

                    6.4  Parent Shareholder Approval.  The transactions
          contemplated by this Agreement shall have been approved by

                                         -51-





          affirmative vote of the Parent's shareholders by the requisite
          vote in accordance with Pennsylvania law and the rules of the
          American Stock Exchange.

                    6.5  Approvals.  The waiting period under the HSR Act
          shall have expired or been terminated.  

                    6.6  Legal Matters.  The performance of the Acquiror
          Transaction Documents and the NII Transaction Documents and the
          consummation of the Closing shall not, directly or indirectly
          (with or without notice or lapse of time), violate, contravene,
          conflict with or result in a violation of any Law and shall not
          violate any Order of any court or governmental body of competent
          jurisdiction, and no suit, action, investigation or legal or
          administrative proceeding shall have been brought or threatened by
          any Person (other than by an Acquired Company or a Principal
          Shareholder) that questions the validity or legality of this
          Agreement or the transactions contemplated hereby.

                    6.7  NII Shareholder Approval. This Agreement and the
          Merger Agreement shall have been approved and adopted by the
          requisite affirmative vote of the NII shareholders in accordance
          with the CGCL.

                    6.8  Effectiveness of Registration Statement.  The
          Registration Statement shall have been declared effective by the
          SEC under the Securities Act.  No stop order suspending the
          effectiveness of the Registration Statement shall have been issued
          by the SEC and no proceedings for that purpose shall have been
          initiated by the SEC.

                    6.9  Opinion of Counsel.  NII and the Principal
          Shareholders shall have received an opinion satisfactory to NII
          and the Principal Shareholders of Drinker Biddle & Reath, counsel
          for Parent, dated as of the Closing Date, with respect to those
          matters on Exhibit F hereto.

                    6.10 Average Share Price.  The Average Share Price (as
          defined in the Merger Agreement) shall be at least $10.00 (such
          dollar amount to be adjusted as appropriate to reflect any Parent
          Recapitalization (as defined in the Merger Agreement) that occurs
          after the date hereof and on or prior to the Closing Date) unless
          Parent shall, in its sole discretion, have elected in writing to
          waive 1,675,000 as the maximum number of Aggregate Selas Shares
          under the Merger Agreement (any such written election, the "Selas
          Option").  

                    6.11 The Merger Agreement.  The Merger Agreement shall
          have been duly executed and delivered by Parent and Merger Sub.

                    6.12 Listing of Parent Common Shares.  The Parent Common
          Shares to be issued in the Merger shall have been approved for

                                         -52-





          listing on the American Stock Exchange upon official notice of
          issuance.

                    6.13 Escrow Agreement.  The Escrow Agreement shall have
          been duly executed and delivered by the Escrow Agent and Parent.


                        SECTION 7.  TERMINATION AND ABANDONMENT

                    7.1  Termination.  This Agreement may be terminated and
          the transactions contemplated herein may be abandoned at any time
          prior to the Closing:

                    (a)  by Parent or NII, if the Closing has not occurred
          (other than through the failure of the party seeking to terminate
          this Agreement to comply fully with its obligations under this
          Agreement) on or before February 28, 1998, or such later date as
          the parties may mutually agree upon;

                    (b)  by mutual consent of Parent and NII;

                    (c)  by Parent and the Merger Sub, on the one hand, or
          NII and the Principal Shareholders, on the other hand, if a
          material breach of any provision of this Agreement has been
          committed by the other party and such breach has not been waived;

                    (d)  by Parent, if any of the conditions in Section 5
          has not been satisfied as of the Closing Date or if satisfaction
          of such a condition is or becomes impossible (other than through
          the failure of Parent or the Merger Sub to comply with its
          obligations under this Agreement) and Parent has not waived all
          such unsatisfied conditions before termination pursuant to this
          subparagraph (d); or

                    (e)  by NII, if any of the conditions in Section 6 has
          not been satisfied as of the Closing Date or if satisfaction of
          such a condition is or becomes impossible (other than through the
          failure of any Acquired Company or any Principal Shareholder to
          comply with its or his obligations under this Agreement) and NII
          has not waived all such unsatisfied conditions on or before
          termination pursuant to this subparagraph (e).

                    7.2  Procedure for Termination; Effect of Termination. 
          A party terminating this Agreement pursuant to Section 7.1 shall
          give written notice thereof to each other party hereto, whereupon
          this Agreement shall terminate and the transactions contemplated
          hereby shall be abandoned without further action by any party and
          all further obligations of the parties under this Agreement will
          terminate; provided, however, that if such termination is pursuant
          to Section 7.1(c), the terminating party's right to pursue all
          legal remedies will survive such termination unimpaired.


                                         -53-






                          SECTION 8.  INDEMNIFICATION; ESCROW

                    8.1  Indemnification by Principal Shareholders.  Subject
          to the limitations set forth in Section 8.3, each Principal
          Shareholder shall indemnify, defend and hold harmless Parent and
          Merger Sub and each of their respective directors, officers,
          shareholders, employees, agents, representatives and affiliates
          (collectively, "Selas Indemnified Persons") against and in respect
          of any and all losses, costs, expenses (including, without
          limitation, costs of investigation and reasonable defense and
          attorneys' fees), claims, damages, obligations, liabilities or
          diminutions in value, whether or not involving a third party claim
          (collectively, "Damages"), arising out of, based upon or otherwise
          in respect of: (a) any inaccuracy in or breach of any representa-
          tion or warranty of such Principal Shareholder made in or pursuant
          to this Agreement (including, without limitation, the first
          certificate referred to in Section 5.3 which, for this purpose,
          will be deemed to have stated, inter alia, that the Principal
          Shareholders' representations and warranties in this Agreement
          were true and correct as of the Closing as if made on the
          Closing); (b) any breach or nonfulfillment of any covenant or
          obligation of any Principal Shareholder contained in this
          Agreement; or (c) any of the matters described in Schedule 8.1
          hereto.

                    8.2  Indemnification by Parent.  Parent shall indemnify,
          defend and hold harmless the NII shareholders against and in
          respect of any and all Damages arising out of, based upon or
          otherwise in respect of:  (a) any inaccuracy in or breach of any
          representation or warranty of Parent made in or pursuant to this
          Agreement (including, without limitation, the certificate referred
          to in Section 6.3 which, for this purpose, will be deemed to have
          stated, inter alia, that Parent's representations and warranties
          in this Agreement were true and correct as of the Closing as if
          made on the Closing Date); or (b) any breach or nonfulfillment of
          any covenant or obligation of Parent or Merger Sub contained in
          this Agreement.

                    8.3  Limitations on Liability.  

                         (a)  In the absence of fraud and intentional
          misrepresentation, no Principal Shareholder shall have any
          obligation to indemnify any Selas Indemnified Person against
          Damages pursuant to Section 8.1 of this Agreement (other than in
          respect of a breach of Section 4.16) unless and until the
          aggregate of all such Damages suffered or incurred by Selas
          Indemnified Persons exceeds $100,000; in which event the Selas
          Indemnified Persons shall be entitled to indemnification for the
          full amount of all Damages suffered or incurred.



                                         -54-





                         (b)  Following Closing, in the absence of fraud and
          intentional misrepresentation, except for claims for Damages
          pursuant to Section 8.1(b) in respect of a breach of Section 4.16,
          the Principal Shareholders shall not be obligated to indemnify
          Selas Indemnified Persons against Damages pursuant to Section 8.1
          to the extent that an indemnification claim by one or more Selas
          Indemnified Persons exceeds the value (calculated as described in
          Section 8.7) of the Parent Common Shares then-constituting the
          Escrow Deposit (as defined below).  Following Closing, in the
          absence of fraud and intentional misrepresentation, except for
          claims for Damages pursuant to Section 8.1(b) in respect of a
          breach of Section 4.16, (i) the sole recourse of Selas Indemnified
          Persons with respect to indemnification claims shall be the Escrow
          Deposit, and (ii) the remedies set forth in this Section 8 and the
          Escrow Agreement (as defined below) shall be the exclusive
          remedies of Selas Indemnified Persons with respect to claims
          hereunder.

                         (c)  No claim arising out of or based upon any
          inaccuracy in or breach of any representation or warranty made in
          or pursuant to this Agreement shall be made unless a claim arises
          and written notice is delivered to the indemnifying party within
          the Basic Claims Period (as defined below).  For purposes hereof,
          "Basic Claims Period" means the period beginning on the Closing
          Date and ending on (i) in the case of the representations and
          warranties set forth in Sections 2.9, 2.10, 2.13, 2.14, 2.15(b),
          2.16, 2.23(b), 2.26 and 2.31, the earlier of (x) the date of
          issuance of the report of Parent's independent accountants with
          respect to audited consolidated financial statements of Parent for
          the fiscal year in which the Closing occurs or (y) the first
          anniversary of the Closing Date and (ii) in the case of all other
          representations and warranties set forth herein, the first
          anniversary of the Closing Date.

                         (d)  Disclosures made after the date hereof and any
          knowledge that is acquired about the accuracy or inaccuracy of or
          compliance with any representation, warranty, covenant or
          obligation set forth herein shall not in any manner affect rights
          to indemnification hereunder based on any such representation,
          warranty, covenant or obligation or be deemed in any manner to
          amend the NII Disclosure Statement.  The waiver by Parent of any
          condition based on the accuracy of any representation or warranty,
          or compliance with any covenant or obligation, will not affect any
          right to indemnification based on such representations,
          warranties, covenants and obligations unless otherwise expressly
          agreed in writing by Parent.

                    8.4  Procedure For Indemnification - Third Party Claims.

                         (a)  Within thirty days after receipt by an
          indemnified party of notice of the commencement of any proceeding
          against it to which the indemnification in this Section 8 relates,

                                         -55-





          such indemnified party shall, if a claim is to be made against an
          indemnifying party under Section 8, give notice to the
          indemnifying party of the commencement of such proceeding, but the
          failure to so notify the indemnifying party will not relieve the
          indemnifying party of any liability that it may have to any
          indemnified party, except to the extent that the indemnifying
          party demonstrates that the defense of such proceeding is
          materially prejudiced by the indemnified party's failure to give
          such notice.

                         (b)  If any proceeding referred to in paragraph (a)
          above is brought against an indemnified party and it gives notice
          to the indemnifying party of the commencement of such proceeding,
          the indemnifying party will be entitled to participate in such
          proceeding and, to the extent that it wishes (unless (i) the
          indemnifying party is also a party to such proceeding and the
          indemnified party determines in good faith that joint
          representation would be inappropriate, or (ii) the indemnifying
          party fails to provide reasonable assurance to the indemnified
          party of its financial capacity to defend such proceeding and
          provide indemnification with respect to such proceeding), to
          assume the defense of such proceeding with counsel reasonably
          satisfactory to the indemnified party and, after notice from the
          indemnifying party to the indemnified party of its election to
          assume the defense of such proceeding, the indemnifying party will
          not, as long as it diligently conducts such defense, be liable to
          the indemnified party under Section 8 for any fees of other
          counsel or any other expenses with respect to the defense of such
          proceeding, in each case subsequently incurred by the indemnified
          party in connection with the defense of such proceeding, other
          than reasonable costs of investigation.  If the indemnifying party
          assumes the defense of a proceeding, no compromise or settlement
          of such claims may be effected by the indemnifying party without
          the indemnified party's consent unless (1) there is no finding or
          admission of any violation of Law by the indemnified party (or any
          affiliate thereof) or any violation of the rights of any Person
          and no effect on any other claims that may be made against the
          indemnified party, and (2) the sole relief provided is monetary
          damages that are paid in full by the indemnifying party.  The
          indemnified party will have no liability with respect to any
          compromise or settlement of the claims underlying such proceeding
          effected without its consent.  If notice is given to an
          indemnifying party of the commencement of any proceeding and the
          indemnifying party does not, within ten days after the indemnified
          party's notice is given, give notice to the indemnified party of
          its election to assume the defense of such proceeding, the
          indemnifying party will be bound by any determination made in such
          proceeding or any compromise or settlement effected by the
          indemnified party.

                         (c)  Notwithstanding the foregoing, if an
          indemnified party determines in good faith that there is a

                                         -56-





          reasonable probability that a proceeding may adversely affect it
          or its affiliates other than as a result of monetary damages for
          which it would be entitled to indemnification under this
          Agreement, the indemnified party may, with respect to those
          issues, by notice to the indemnifying party, assume the exclusive
          right to defend, compromise, or settle such proceeding, but the
          indemnifying party will not be bound by any determination of a
          proceeding so defended or any compromise or settlement effected
          without its consent.

                    8.5  Procedure for Indemnification - Other Claims.  A
          claim for any matter not involving a third party claim may be
          asserted by notice to the party from whom indemnification is
          sought.

                    8.6  Acknowledgement; Release.

                         (a)  Each Principal Shareholder hereby acknowledges
          that the representations, warranties and covenants made by him or
          it herein are made in his or its capacity as a shareholder of NII
          and/or as a shareholder of Widmar and not as a director, officer
          or employee of any Acquired Company or Widmar; accordingly, each
          Principal Shareholder acknowledges and confirms that following the
          Closing he shall not have any claim for indemnification by or
          contribution from Widmar or any Acquired Company, or any affiliate
          thereof, as an officer, trustee, director or employee thereof in
          respect of any matter, including without limitation, any Damages
          due or owing by such Principal Shareholder pursuant to the terms
          of this Agreement, and each Principal Shareholder hereby
          irrevocably releases Widmar and each Acquired Company and each
          affiliate thereof from any such claim.

                         (b)  No Principal Shareholder shall have any right
          hereunder or otherwise to indemnification or contribution from 
          Widmar, any Acquired Company or any affiliate thereof with respect
          to any matter (except for claims against Parent pursuant to
          Section 8.2), including, without limitation, any inaccuracy in or
          breach of any representation or warranty of NII or the Principal
          Shareholders made in or pursuant to this Agreement or any NII
          Transaction Document or any breach or nonfulfillment of any
          covenant or obligation of NII or Widmar contained in this
          Agreement or any NII Transaction Document, and each Principal
          Shareholder hereby irrevocably releases NII and Widmar from any
          liability for any such claim.

                    8.7  Escrow of Parent Common Shares.  Immediately
          following the delivery to the Representative of certificates
          representing Parent Common Shares as provided in Section 4.4(a) of
          the Merger Agreement, the Principal Shareholders shall deposit
          into escrow, with the Escrow Agent named in the Escrow Agreement,
          an aggregate number of Parent Common Shares equal to 10% of the
          number of Parent Common Shares issuable by Parent pursuant to

                                         -57-





          Section 4.1(c) of the Merger Agreement and pursuant to Section
          4.18 hereof (such deposit, the "Escrow Deposit").  Each Principal
          Shareholder shall be obligated to transfer into such Escrow
          Deposit that number of Parent Common Shares (rounded to the
          nearest whole number of Parent Common Shares to eliminate any
          fractional shares) as is equal to the product of (x) the aggregate
          Parent Common Shares referred to in the immediately preceding
          sentence and (y) the percentage allocation for such Principal
          Shareholder set forth in Schedule 8.7 hereto.  Each Principal
          Shareholder hereby irrevocably authorizes and directs the
          Representative to make the foregoing transfer into the Escrow
          Deposit on his behalf out of Parent Common Shares received by the
          Representative pursuant to Section 4.4(a) of the Merger Agreement
          that such Principal Shareholder would have, but for this Section
          8.7, been entitled to receive pursuant to Section 4.1(c) of the
          Merger Agreement.  Indemnity claims asserted by Selas Indemnified
          Persons pursuant to this Section 8 shall be satisfied by the
          transfer, free and clear of all Encumbrances, of ownership of
          Parent Common Shares held in the Escrow Deposit to Parent in
          accordance with the terms of the Escrow Agreement.  In order to
          facilitate any such transfer, each Principal Shareholder shall
          execute and deliver at the Closing (and thereafter from time to
          time as the Escrow Agent, Parent or the Representative may, from
          time to time, request) appropriate stock powers in blank.  Each
          Parent Common Share returned to Parent out of the Escrow Deposit
          in settlement of any such indemnity claim in accordance with the
          Escrow Agreement shall be valued at the Average Share Price (as
          defined in the Merger Agreement).  With respect to Parent Common
          Shares to be returned to Parent by the Principal Shareholders in
          settlement of indemnity claims of Selas Indemnified Persons, any
          dividends previously paid in respect of such returned shares
          (whether paid in cash, Parent Common Shares or other property)
          shall also be transferred, free and clear of all Encumbrances, to
          Parent, provided that the value of such dividends shall not be
          taken into account for purposes of determining the value of such
          returned Parent Common Shares, as contemplated under Accounting
          Principles Board Opinion No. 16 (Interpretation No. 30).  No
          Principal Shareholder shall take any action with respect to the
          Parent Common Shares held in the Escrow Deposit that conflicts
          with the terms of the Escrow Agreement.

                    8.8  Appointment of Representative.  (a)  Each of the
          Principal Shareholders hereby appoints and, by executing the
          Acknowledgement and Consent set forth on Exhibit D hereto, each of
          the other NII shareholders executing such Acknowledgement and
          Consent (together with the Principal Shareholders, the
          "Shareholder Signatories") hereby appoints, Mr. William D.
          McEntire as such Person's exclusive agent to act on such Person's
          behalf with respect to (i) the surrender of certificates
          contemplated by Section 4.3 of the Merger Agreement and the
          distribution among such Persons of the consideration received in
          respect of the Merger and (ii) in the case of the Principal

                                         -58-





          Shareholders, all indemnification claims pursuant to this
          Section 8, the delivery of Parent Common Shares into the Escrow
          Deposit as contemplated by Section 8.7 and all matters arising
          under the Escrow Agreement.  In such representative capacity, Mr.
          McEntire, or any Person who shall succeed Mr. McEntire in such
          representative capacity pursuant to the terms of the Escrow
          Agreement, is sometimes referred to herein as the
          "Representative."

                         (b)  Promptly following execution and delivery of
          this Agreement (or the Acknowledgement and Consent set forth in
          Exhibit D), each Shareholder Signatory shall deliver to the
          Representative certificates for all NII Common Shares owned by
          such Shareholder Signatory, and the Representative shall deliver
          such certificates to Parent at the Closing as contemplated in
          Section 4.3 of the Merger Agreement or, in the event this
          Agreement is terminated prior to Closing, the Representative shall
          return such certificates to such Shareholder Signatory promptly
          following such termination.  Promptly following the Effective
          Time, the Representative shall deliver to each Shareholder
          Signatory who delivered to the Representative prior to the
          Effective Time certificates representing NII Common Shares that
          were converted in the Merger a certificate representing Parent
          Common Shares into which such NII Common Shares were converted,
          subject, in the case of the Principal Shareholders, to Section
          8.7.

                         (c)  The Representative shall take any and all
          actions which he believes are necessary or appropriate under this
          Agreement or the Merger Agreement for and on behalf of the
          Shareholder Signatories, as fully as if the Shareholder
          Signatories were acting on their own behalf, including, without
          limitation, defending all indemnity claims against the Principal
          Shareholders, consenting to, compromising or settling such claims,
          conducting negotiations with Parent and its representatives
          regarding such claims, dealing with Parent and the Escrow Agent
          under the Escrow Agreement with respect to all matters arising
          under such agreement, and taking any and all other actions
          specified in or contemplated by this Agreement.  Parent, Escrow
          Agent and Merger Sub shall have the right to rely upon all actions
          taken or omitted to be taken by the Representative pursuant to
          this Agreement, the Merger Agreement and the Escrow Agreement, all
          of which actions or omissions shall be legally binding upon each
          of the Shareholder Signatories.


                            SECTION 9.  GENERAL PROVISIONS

                    9.1  Survival of Representations and Warranties.  The
          representations and warranties of the parties hereto shall survive
          the Closing and the Merger but, except in respect of any claims
          for indemnification as to which notice shall have been duly given

                                         -59-





          prior to the relevant expiration date set forth below, shall
          expire on (i) in the case of the representations and warranties
          set forth in Sections 2.9, 2.10, 2.13, 2.14, 2.15(b), 2.16,
          2.23(b), 2.26 and 2.31, the earlier of (x) the date of issuance of
          the report of Parent's independent accountants with respect to
          audited consolidated financial statements of Parent for the fiscal
          year in which the Closing occurs or (y) the first anniversary of
          the Closing Date and (ii) in the case of all other representations
          and warranties set forth herein, the first anniversary of the
          Closing Date.  Notwithstanding anything to the contrary in this
          Agreement, the representations and warranties of each party
          hereunder, and the right of the other parties to indemnification
          for breach thereof, shall not be affected by any disclosure to, or
          investigation made by or on behalf of, the other parties before or
          after the Closing Date.

                    9.2  Notices.  All notices, requests, claims, demands
          and other communications hereunder shall be in writing and shall
          be sufficiently given if delivered personally sent by overnight
          courier (providing proof of delivery), mailed by registered or
          certified mail, postage prepaid, return receipt requested or
          telecopied (with an additional copy mailed by first class mail) to
          the parties at the following addresses (or at such other address
          for a party as shall be specified by like notice).  Any such
          notice or communication shall be deemed to have been given as of
          the date received, in the case of personal delivery, or on the
          date shown on the receipt or confirmation therefor in all other
          cases.

                    If to Parent or Merger Sub, to:

                    Selas Corporation of America
                    P.O. Box 200
                    2034 Limekiln Pike
                    Dresher, Pennsylvania 19025-1918
                    Telecopy:   (215)646-3536
                    Attention:  Stephen F. Ryan, President & CEO
















                                         -60-





                    with a copy to:

                    Drinker Biddle & Reath LLP
                    Philadelphia National Bank Building
                    1345 Chestnut Street
                    Philadelphia, PA  19107
                    Telecopy:   (215)988-2757
                    Attention:  Robert D. Denious, Esq.

                    If to NII or any of the Principal Shareholders to:

                    NII, Incorporated
                    19500 Nugget Boulevard
                    Sonora, California 95370
                    Telecopy:   (209)533-9591
                    Attention:  William D. McEntire, President

                    with a copy to:

                    Carr, McClellan, Ingersoll, Thompson & Horn,
                     Professional Corporation
                    216 Park Road
                    Burlingame, CA  94010
                    Telecopy:   (415)342-7685
                    Attention:  Denny S. Roja, Esq.


                    9.3  Further Assurances.  Each party hereto shall use
          best efforts to comply with all requirements imposed hereby on
          such party and to cause the transactions contemplated hereby to be
          consummated as contemplated hereby and shall, from time to time
          and without further consideration, either before or after the
          Closing, execute such further instruments and take such other
          actions as any other party hereto shall reasonably request in
          order to fulfill his or its obligations under this Agreement and
          to effectuate the purposes of this Agreement and to provide for
          the orderly and efficient transition of the ownership of the
          Acquired Companies to Parent.   Each party shall promptly notify
          the other parties of any event or circumstance known to such party
          that could prevent or delay the consummation of the transactions
          contemplated hereby or which would indicate a breach or non-
          compliance with any of the terms, conditions, representations,
          warranties or agreements of any of the parties to this Agreement.

                    9.4  Costs and Expenses.  Except as otherwise expressly
          provided herein, each party shall bear its own expenses in
          connection herewith.  All HSR Act filing fees shall be paid by
          Parent.

                    9.5  Public Announcements.  Neither Parent or Merger Sub
          on the one hand nor any Acquired Company or Principal Shareholder
          on the other shall issue any press release or make any public

                                         -61-





          announcement or disclosure relating in any way to the transactions
          contemplated hereby or the negotiations concerning same without
          the prior consent of the other party; provided, however, that, as
          to announcements or disclosures required by Law or by the rules of
          the American Stock Exchange, Parent shall only be required to use
          its best efforts to advise NII of the form and content of any such
          announcement or disclosure prior to making any such announcement
          or disclosure and provided further that Parent shall be entitled
          to issue a press release following the execution and delivery of
          this Agreement.

                    9.6  Waiver; Amendment.  The rights and remedies of the
          parties to this Agreement are cumulative and not alternative.  At
          any time prior to the Closing, the parties hereto may, by a
          writing executed by the President and Chief Executive Officer or
          the Vice President, Treasurer and Chief Financial Officer of
          Parent and by the President and Chief Executive Officer of NII,
          (i) extend the time for the performance of any of the obligations
          or other acts of the parties hereto, (ii) waive any inaccuracies
          in the representations and warranties contained herein or in any
          document delivered pursuant hereto, (iii) waive compliance with
          any of the agreements or conditions contained herein except the
          conditions set forth in Sections 5.14 and 6.7; provided that no
          failure or delay by any party hereto in exercising any rights
          hereunder shall operate as a waiver thereof nor shall any single
          or partial exercise thereof preclude any other or further exercise
          thereof or the exercise of any other right hereunder.  At any time
          prior to the Closing, this Agreement may be amended in any respect
          by a writing executed by each of the parties hereto.

                    9.7  Assignment and Benefit.

                         (a)  No party hereto shall assign this Agreement or
          any rights hereunder, or delegate any obligations hereunder,
          without prior written consent of the other parties hereto. 
          Subject to the foregoing, this Agreement and the rights and
          obligations set forth herein shall inure to the benefit of, and be
          binding upon, the parties hereto, and each of their respective
          successors, heirs and assigns.  

                         (b)  This Agreement shall not be construed as
          giving any person, other than the parties hereto and their
          permitted successors and assigns, any legal or equitable right,
          remedy or claim under or in respect of this Agreement or any of
          the provisions herein contained, this Agreement and all provisions
          and conditions hereof being intended to be, and being, for the
          sole and exclusive benefit of such parties, and permitted
          successors, heirs and assigns and for the benefit of no other
          person or entity.




                                         -62-






                    9.8  Governing Law; Consent to Jurisdiction.  This
          Agreement is made pursuant to, and shall be construed and enforced
          in accordance with, the laws of the Commonwealth of Pennsylvania
          (and United States federal law, to the extent applicable),
          irrespective of the principal place of business, residence or
          domicile of the parties hereto, and without giving effect to
          otherwise applicable principles of conflicts of law.  Any legal
          action, suit or proceeding arising out of or relating to this
          Agreement may be instituted in any federal court in the Northern
          District of California, and each party waives any objection which
          such party may now or hereafter have to the laying of the venue of
          any such action, suit or proceeding, and irrevocably submits to
          the jurisdiction of any such court.  Any and all service of
          process and any other notice in any such action, suit or
          proceeding shall be effective against any party if given as
          provided herein.  Nothing herein contained shall be deemed to
          affect the right of any party to serve process in any other manner
          permitted by law or to commence legal proceedings or otherwise
          proceed against any other party in any jurisdiction other than
          California.  Nothing contained herein or in any Transaction
          Document shall prevent or delay Parent from seeking, in any court
          of competent jurisdiction, specific performance or other equitable
          remedies in the event of any breach or intended breach by NII or
          any Principal Shareholder of any of his or its obligations
          hereunder.

                    9.9  Section Headings and Defined Terms.  The section
          headings contained herein are for reference purposes only and
          shall not in any way affect the meaning and interpretation of this
          Agreement.  The terms defined herein and in any agreement executed
          in connection herewith include the plural as well as the singular
          and the singular as well as the plural, and the use of masculine
          pronouns shall include the feminine and neuter.  Except as other-
          wise indicated, all agreements defined herein refer to the same as
          from time to time amended or supplemented or the terms thereof
          waived or modified in accordance herewith and therewith.
















                                         -63-






                    9.10  Severability.  The invalidity or unenforceability
          of any particular provision, or part of any provision, of this
          Agreement shall not affect the other provisions or parts hereof,
          and this Agreement shall be construed in all respects as if such
          invalid or unenforceable provisions or parts were omitted.

                    9.11  Counterparts.  This Agreement may be executed in
          two or more counterparts, each of which shall be deemed an orig-
          inal; and any person may become a party hereto by executing a
          counterpart hereof, but all of such counterparts together shall be
          deemed to be one and the same instrument.  It shall not be neces-
          sary in making proof of this Agreement or any counterpart hereof
          to produce or account for any of the other counterparts.

                    9.12  Entire Agreement.  This Agreement, together with
          the NII Disclosure Statement and the agreements, exhibits,
          schedules and certificates referred to herein or delivered
          pursuant hereto, constitute the entire agreement between the
          parties hereto with respect to the subject matter hereof and
          supersede all prior agreements and understandings.  The submission
          of a draft of this Agreement or portions or summaries thereof does
          not constitute an offer to purchase or sell the NII Common Shares,
          it being understood and agreed that no party hereto shall be
          legally obligated with respect to such a purchase or sale or to
          any other terms or conditions set forth in such draft or portion



























                                         -64-





          or summary unless and until this Agreement has been duly executed
          and delivered by all parties.  

                    IN WITNESS WHEREOF, each of the parties hereto has duly
          executed this Agreement, all as of the date first above written.


                                          SELAS CORPORATION OF AMERICA


                                          By:/s/ Stephen F. Ryan           
                                             Name:  Stephen F. Ryan
                                             Title: President and CEO


                                          By:/s/ Robert W. Ross            
                                             Name:  Robert W. Ross
                                             Title: Secretary


                                          SELAS ACQUISITION CORPORATION


                                          By:/s/ Stephen F. Ryan           
                                             Name:  Stephen F. Ryan
                                             Title: President and CEO


                                          By:/s/ Robert W. Ross            
                                             Name:  Robert W. Ross
                                             Title: Secretary


                                          NII, INCORPORATED


                                          By:/s/ William D. McEntire       
                                             Name:  William D. McEntire
                                             Title: President and CEO


                                          By:/s/ Suzanne M. McEntire       
                                             Name:  Suzanne M. McEntire
                                             Title: Secretary









                                         -65-





                                          PRINCIPAL SHAREHOLDERS:

                                          WIDMAR, INC.


                                          By:/s/ William D. McEntire       
                                             Name:  William D. McEntire
                                             Title: President


                                          /s/ Ronald E. Erickson           
                                          /s/ Elaine B. Erickson           
                                          Ronald E. Erickson and Elaine B.
                                          Erickson, as trustees of the
                                          Erickson 1994 Revocable Trust
                                          dated April 15, 1994


                                          /s/ Ronald E. Erickson          
                                          Ronald E. Erickson

                                          /s/ Bernie A. Fredrick          
                                          Bernie A. Fredrick

                                          /s/ Rhonda Fredrick             
                                          Rhonda Fredrick

                                          /s/ Robert E. Tambeau           
                                          Robert E. Tambeau

                                          /s/ Jimmi Roberts               
                                          Jimmi Roberts

                                          /s/ James Roberts               
                                          James Roberts

                                          /s/ Richard J. McEntire         
                                          Richard J. McEntire

                                          /s/ Suzanne M. McEntire         
                                          Suzanne M. McEntire

                                          /s/ William D. McEntire         
                                          William D. McEntire









                                         -66-





                                       APPENDIX


                                Index of Defined Terms

                                                                  Where
          Term                                                  Defined

          Accounts Receivable . . . . . . . . . . . . . . . . . . .  10
          Acquired Companies  . . . . . . . . . . . . . . . . . . . . 2
          Acquired Company  . . . . . . . . . . . . . . . . . . . . . 3
          Acquiror Representatives  . . . . . . . . . . . . . . . .  36
          Acquiror Transaction Documents  . . . . . . . . . . . . .  31
          Affiliated Persons  . . . . . . . . . . . . . . . . . . .  23
          Authorizations  . . . . . . . . . . . . . . . . . . . . . . 7
          Business  . . . . . . . . . . . . . . . . . . . . . . . . . 1
          Buyer Indemnified Persons . . . . . . . . . . . . . . . .  54
          CERCLA  . . . . . . . . . . . . . . . . . . . . . . . . .  25
          CGCL  . . . . . . . . . . . . . . . . . . . . . . . . .  1, 2
          Closing . . . . . . . . . . . . . . . . . . . . . . . . . . 2
          Closing Date  . . . . . . . . . . . . . . . . . . . . . . . 2
          Code  . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
          Competing Business  . . . . . . . . . . . . . . . . . . .  23
          Contracts . . . . . . . . . . . . . . . . . . . . . . . .  15
          Damages . . . . . . . . . . . . . . . . . . . . . . . . .  54
          DOL . . . . . . . . . . . . . . . . . . . . . . . . . . .  20
          Effective Time  . . . . . . . . . . . . . . . . . . . . . . 2
          Employee Benefit Plans  . . . . . . . . . . . . . . . . .  19
          Employment Agreements . . . . . . . . . . . . . . . . . .  49
          Encumbrance . . . . . . . . . . . . . . . . . . . . . . . . 3
          Encumbrances  . . . . . . . . . . . . . . . . . . . . . . . 3
          Erickson Trust  . . . . . . . . . . . . . . . . . . . . . . 1
          ERISA . . . . . . . . . . . . . . . . . . . . . . . . . .  19
          Escrow Agreement  . . . . . . . . . . . . . . . . . . . .  38
          Escrow Deposit  . . . . . . . . . . . . . . . . . . . . .  58
          ESOP  . . . . . . . . . . . . . . . . . . . . . . . . . .  22
          ESOP Solicitation . . . . . . . . . . . . . . . . . . . .  42
          Exchange Act  . . . . . . . . . . . . . . . . . . . . . . . 4
          Existing NII Financial Statements . . . . . . . . . . . . . 8
          Former Real Property  . . . . . . . . . . . . . . . . . .  24
          GAAP  . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
          GAAP Statements . . . . . . . . . . . . . . . . . . . . . . 9
          Group . . . . . . . . . . . . . . . . . . . . . . . . . .  43
          HIPAA . . . . . . . . . . . . . . . . . . . . . . . . . .  22
          HSR Act . . . . . . . . . . . . . . . . . . . . . . . . . . 6
          Intellectual Property . . . . . . . . . . . . . . . . . .  13
          Interim CSI Balance Sheet . . . . . . . . . . . . . . . . . 9
          IRS . . . . . . . . . . . . . . . . . . . . . . . . . . .  20
          Laws  . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
          Merger  . . . . . . . . . . . . . . . . . . . . . . . . . . 1
          Merger Agreement  . . . . . . . . . . . . . . . . . . . . . 1
          Merger Sub  . . . . . . . . . . . . . . . . . . . . . . . . 1

                                         -67-





          MRL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
          Multiemployer Plan  . . . . . . . . . . . . . . . . . . .  21
          NII . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
          NII Common Shares . . . . . . . . . . . . . . . . . . . . . 3
          NII Disclosure Statement  . . . . . . . . . . . . . . . 3, 51
          NII Shareholder List  . . . . . . . . . . . . . . . . . .  42
          NII Shareholders' Meeting . . . . . . . . . . . . . . . .  39
          NII Transaction Documents . . . . . . . . . . . . . . . . . 4
          Orders  . . . . . . . . . . . . . . . . . . . . . . . . . . 8
          OSHA  . . . . . . . . . . . . . . . . . . . . . . . . . .  18
          Parent  . . . . . . . . . . . . . . . . . . . . . . . . . . 1
          Parent Common Shares  . . . . . . . . . . . . . . . . . .  33
          Parent Material Adverse Effect  . . . . . . . . . . . . .  32
          Parent Preferred Shares . . . . . . . . . . . . . . . . .  33
          Parent Shareholders Meeting . . . . . . . . . . . . . . .  39
          PBGC  . . . . . . . . . . . . . . . . . . . . . . . . . .  20
          Pension Plan  . . . . . . . . . . . . . . . . . . . . . .  19
          Person  . . . . . . . . . . . . . . . . . . . . . . . . . . 6
          Premises  . . . . . . . . . . . . . . . . . . . . . . . .  23
          Principal Shareholders  . . . . . . . . . . . . . . . . . . 1
          Proxy Statement . . . . . . . . . . . . . . . . . . . . .  30
          Registration Statement  . . . . . . . . . . . . . . . . .  30
          Representative  . . . . . . . . . . . . . . . . . . . . .  59
          SEC . . . . . . . . . . . . . . . . . . . . . . . . . . .  30
          SEC Reports . . . . . . . . . . . . . . . . . . . . . . .  33
          Securities Act  . . . . . . . . . . . . . . . . . . . . . . 4
          Selas Option  . . . . . . . . . . . . . . . . . . . . . .  52
          Shareholder Signatories . . . . . . . . . . . . . . . . .  58
          Stock Acquisition . . . . . . . . . . . . . . . . . . . . . 1
          Takeover Proposal . . . . . . . . . . . . . . . . . . . .  36
          Taxes . . . . . . . . . . . . . . . . . . . . . . . . . .  12
          Waivers . . . . . . . . . . . . . . . . . . . . . . . . .  38
          Welfare Plan  . . . . . . . . . . . . . . . . . . . . . .  19
          Western . . . . . . . . . . . . . . . . . . . . . . . . . . 6
          Widmar  . . . . . . . . . . . . . . . . . . . . . . . . . . 1
          Widmar Percentage . . . . . . . . . . . . . . . . . . . .  45
          Widmar Shareholders . . . . . . . . . . . . . . . . . . . . 1
















                                         -68-

<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
financial statements of Selas Corporation of America for the six months
ended September 30, 1997 and is qualified in its entirety by reference to
such financial statements.
</LEGEND>
       
<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               SEP-30-1997
<CASH>                                       3,031,872
<SECURITIES>                                         0
<RECEIVABLES>                               35,413,042
<ALLOWANCES>                                   696,410
<INVENTORY>                                  9,605,982
<CURRENT-ASSETS>                            50,653,351
<PP&E>                                      33,971,623
<DEPRECIATION>                              16,946,992
<TOTAL-ASSETS>                              84,851,921
<CURRENT-LIABILITIES>                       31,657,561
<BONDS>                                      7,696,204
                                0
                                          0
<COMMON>                                     5,577,324
<OTHER-SE>                                  34,403,599
<TOTAL-LIABILITY-AND-EQUITY>                84,851,921
<SALES>                                     86,334,612
<TOTAL-REVENUES>                            86,334,612
<CGS>                                       67,931,495
<TOTAL-COSTS>                               67,931,495
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                 7,081
<INTEREST-EXPENSE>                             764,952
<INCOME-PRETAX>                              6,066,130
<INCOME-TAX>                                 2,385,789
<INCOME-CONTINUING>                          3,680,341
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 3,680,341
<EPS-PRIMARY>                                     0.69
<EPS-DILUTED>                                     0.68
        

</TABLE>


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