MASTEC INC
10-Q, 1998-08-14
WATER, SEWER, PIPELINE, COMM & POWER LINE CONSTRUCTION
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

      

                                    FORM 10-Q

                QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
                  For the quarterly period ended June 30, 1998
                          Commission file number 0-3797

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

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






             (Exact name of registrant as specified in its charter)

                  Delaware                              59-1259279
      (State or other jurisdiction of                (I.R.S. Employer
       incorporation or organization)               Identification No.)

    3155 N.W. 77th Avenue, Miami, FL                    33122-1205
 (Address of principal executive offices)               (Zip Code)


       Registrant's telephone number, including area code: (305) 599-1800

Former name, former address and former fiscal year, if changed since last report
                                 Not Applicable


  Indicate the number of shares outstanding of each of the issuer's classes of
                common stock, as of the latest practicable date.


                                                   Outstanding as of
          Class of Common Stock                     August 11, 1998
             $ 0.10 par value                         27,399,999


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






<PAGE>


                                  MasTec, Inc.
                                      Index

<TABLE>
<CAPTION>

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

    Item 1 -  Unaudited Condensed Consolidated Statements of Income
              for the Three and Six Month Periods Ended June 30, 1998 and 1997...........................3

              Condensed Consolidated Balance Sheets as of June 30, 1998
              and December 31, 1997......................................................................4

              Unaudited Consolidated Statement of Shareholders' Equity for
              the Six Month Period ended June 30, 1998...................................................5

              Unaudited Condensed Consolidated Statements of Cash Flows
              for the Six Month Period Ended June 30, 1998 and 1997......................................6

              Notes to Condensed Consolidated
              Financial Statements (Unaudited)...........................................................8

    Item 2 -  Management's Discussion and Analysis of
              Results of Operations and Financial Condition.............................................13

PART II       OTHER INFORMATION.........................................................................20

</TABLE>
<TABLE>


<PAGE>


                                  MasTec, Inc.
                   CONDENSED CONSOLIDATED STATEMENTS OF INCOME
                    (In thousands, except per share amounts)
<CAPTION>

                                                                 Three Months Ended            Six Months Ended
                                                                       June 30,                     June 30,
                                                                     (Unaudited)                  (Unaudited)
                                                                 1998           1997         1998            1997

<S>                                                          <C>             <C>          <C>             <C>      
Revenue                                                      $ 246,106       $ 141,499    $ 432,201       $ 271,642
Costs of revenue                                               186,228         101,824      339,194         195,039
Depreciation and amortization                                   10,935           4,503       19,164           8,307
General and administrative expenses                             28,932          17,558       67,431          35,187
                                                               -------         -------      -------         -------
     Operating income                                           20,011          17,614        6,412          33,109

Interest expense                                                 7,072           2,582       12,128           5,455
Interest and dividend income                                     1,956             330        3,389             792
Other income, net                                                1,171             470        1,414             939
Income (loss) before equity in earnings
   of unconsolidated companies,
  provision for income taxes and
   minority interest                                            16,066          15,832         (913)         29,385
                                                               -------         -------      -------         -------
Equity in earnings of unconsolidated companies                     333             579          755           1,316
Provision for income taxes                                       6,113           5,558          803          10,527
Minority interest                                                 (892)            (27)      (1,745)            (61)
                                                               -------         -------      -------         -------
Net income (loss)                                            $   9,394       $  10,826   $   (2,706)     $   20,113
                                                               =======         =======      =======         =======

Basic earnings (loss) per share:
Weighted average common shares outstanding                      27,816          25,812       27,746          25,727
Earnings (loss) per share                                    $     .34       $     .42   $     (.10)     $      .78
                                                               =======         =======      =======         =======


Diluted earnings (loss) per share:
Weighted average common shares outstanding                      28,157          26,420       27,746          26,244
Earnings (loss) per share                                    $     .33       $     .41   $     (.10)     $      .77
                                                               =======         =======      =======         =======

</TABLE>




The accompanying notes are an integral part of these financial statements.



<PAGE>
<TABLE>


<CAPTION>
                                  MasTec, Inc.
                           CONSOLIDATED BALANCE SHEETS
                                 (In thousands)

<S>                                                                           <C>                 <C>
                                                                              June 30,            December 31,
                                                                                1998                 1997
                                                                               ------               ------
ASSETS
Current assets:
   Cash and cash equivalents                                                 $  39,496            $   6,063
   Accounts receivable-net and unbilled revenue                                372,502              346,596
   Inventories                                                                  13,667                8,746
   Other current assets                                                         53,323               32,791
                                                                               -------              -------
         Total current assets                                                  478,988              394,196
                                                                               -------              -------

Property and equipment-net                                                     127,710               86,109

Investments in unconsolidated companies                                         50,860               48,160
Other assets                                                                   164,064              101,759
                                                                               -------              -------

TOTAL ASSETS                                                                 $ 821,622            $ 630,224
                                                                               =======              =======

LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities:
   Current maturities of debt                                                $  59,277            $  54,562
   Accounts payable                                                            176,327              166,596
   Other current liabilities                                                    62,958               48,950
                                                                               -------              -------
         Total current liabilities                                             298,562              270,108
                                                                               -------              -------

Other liabilities                                                               41,428               41,924
                                                                               -------              -------

Long-term debt                                                                 265,831               94,495
                                                                               -------              -------

Common stock                                                                     2,759                2,758
Capital surplus                                                                149,280              154,013
Retained earnings                                                               67,686               70,392
Accumulated translation                                                         (3,924)              (3,466)
                                                                               -------              -------

Total shareholders' equity                                                     215,801              223,697
                                                                               -------              -------

TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY                                   $ 821,622            $ 630,224
                                                                               =======              =======
</TABLE>



The accompanying notes are an integral part of these financial statements.


<PAGE>


<TABLE>
<CAPTION>

                                                MasTec, Inc.
                                     UNAUDITED CONSOLIDATED STATEMENT OF
                                            SHAREHOLDERS' EQUITY
                                               (In thousands)
                                   for the six months ended June 30, 1998

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

                                        Common Stock                                 Accumulated
                                    Issued                   Capital     Retained    Translation
                                    Shares       Amount      Surplus     Earnings    Adjustment      Total
- --------------------------------------------------------------------------------------------------------------
Balance, December 31, 1997          27,580      $ 2,758     $ 154,013    $ 70,392    $ (3,466)     $ 223,697
Net (loss)                                                                 (2,706)                    (2,706)
Cumulative effect of translation                                                         (458)          (458)
Stock issued to employees
  from treasury stock                  405           41         3,586                                  3,627
Repurchase of common stock            (397)         (40)       (8,319)                                (8,359)
- --------------------------------------------------------------------------------------------------------------

Balance, June 30, 1998              27,588      $ 2,759     $ 149,280    $ 67,686    $ (3,924)     $ 215,801
==============================================================================================================

</TABLE>


The accompanying notes are an integral part of these financial statements.



<PAGE>
<TABLE>
<CAPTION>


                                  MASTEC, INC.
            UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (In thousands)

                                                                                           SIX MONTHS ENDED
                                                                                              JUNE  30,
<S>                                                                                   <C>                   <C> 
                                                                                      1998                  1997
                                                                                      ----                  ----
                                                                                             (Unaudited)
Cash flows from operating activities:
Net (loss) income                                                                $   (2,706)             $  20,113
Adjustments to reconcile net (loss) income to net cash
   provided by operating activities:
Minority interest                                                                     1,745                     61
Depreciation and amortization                                                        19,164                  8,307
Equity in earnings of unconsolidated companies                                         (755)                (1,316)
(Gain) loss on sale of assets                                                          (183)                   140
Changes  in  assets  and  liabilities   net  of  effect  of   
  acquisitions  and divestitures:
  Accounts receivable-net and unbilled revenue                                      (15,145)                52,628
  Inventories and other current assets                                                4,118                 (4,570)
  Other assets                                                                       (3,290)                   457
  Accounts payable and accrued expenses                                               4,054                (42,518)
  Income taxes                                                                        3,235                 (1,194)
  Other current liabilities                                                           9,784                   (562)
  Other liabilities                                                                  (6,832)                (1,748)
                                                                                    -------               --------
  Net cash provided by operating activities                                          13,189                 29,798
                                                                                    -------               --------

Cash flows from investing activities:
Cash paid for acquisitions, net of cash acquired                                    (62,540)               (11,467)
(Advances) repayment of notes receivable                                            (12,499)                 1,297
Capital expenditures                                                                (32,680)                (8,162)
Investment in unconsolidated companies                                               (2,730)                (3,829)
Proceeds from sale of assets                                                          1,190                  9,576
                                                                                    -------               --------
Net cash used in investing activities                                              (109,259)               (12,585)
                                                                                    -------               --------

Cash flows from financing activities:
(Repayment) proceeds from revolving credit facilities                                (4,875)                24,382
Proceeds from Notes                                                                 199,724                      0
Financing costs                                                                      (4,993)                  (587)
Debt repayments                                                                     (55,826)               (48,160)
Net (payments) proceeds for common stock issued (repurchased)                        (4,545)                 3,767
                                                                                    -------               --------
Net cash provided by (used in) financing activities                                 129,485                (20,598)
                                                                                    -------               --------

Net increase (decrease) in cash and cash equivalents                                 33,415                 (3,385)

Effect of translation on cash                                                            18                   (331)

Cash and cash equivalents - beginning of period                                       6,063                  4,754
                                                                                    -------               --------
Cash and cash equivalents - end of period                                            39,496             $    1,038
                                                                                    =======               ========

Supplemental disclosures of cash flow information: 
Cash paid during the period:

  Interest                                                                       $    6,711             $    3,070
  Income taxes                                                                   $    7,268             $    8,917
</TABLE>

The accompanying notes are an integral part of these financial statements.







<PAGE>

<TABLE>
<CAPTION>

                                  MASTEC, INC.
      UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued)
                                 (In thousands)


Supplemental disclosure of non-cash investing and financing activities:

                                                                                    SIX MONTHS ENDED
                                                                                        JUNE 30,
<S>                                                                            <C>                   <C> 
                                                                               1998                  1997
                                                                               ----                  ----
                                                                                      (Unaudited)

Acquisitions:
Fair value of assets acquired:
Accounts receivable                                                        $  31,669              $  11,764
Inventories                                                                    2,378                    193
Deferred and refundable income taxes                                           1,024                      0
Other current assets                                                             458                    736
Property                                                                      25,847                  9,848
Other assets                                                                   3,029                  1,680
                                                                             -------                -------
Total non-cash assets                                                         64,405                 24,221
                                                                             -------                -------
Liabilities                                                                   18,160                  8,948
Debt                                                                          17,746                  3,901
                                                                             -------                -------
Total liabilities assumed                                                     35,906                 12,849
                                                                             -------                -------
Net non-cash assets acquired                                                                         11,372
Cash acquired                                                                  3,756                  1,036
                                                                             -------                -------
Fair value of net assets acquired                                             28,499                 12,408
Excess over fair value of assets acquired                                     42,670                 15,212
                                                                             -------                -------
Purchase price                                                             $  74,925              $  27,620
                                                                             =======                =======


Note payable issued for acquisitions                                       $   8,629              $     130
Cash paid and common stock issued for acquisitions                            66,296                 18,629
Contingent consideration                                                           -                  8,861
                                                                             -------                -------
Purchase price                                                             $  74,925              $  27,620
                                                                             =======                =======



Property acquired through financing arrangements                           $       -              $     413
                                                                             =======                =======

<FN>

In 1997,  the Company  issued  approximately  172,982 shares of Common Stock for
acquisitions.  Common  Stock  was  issued  from  treasury  stock  at a  cost  of
approximately $1.4 million.

In 1997, the Company  converted a note receivable and accrued  interest  thereon
totaling $29 million into stock of a company.

In 1998, the Company issued  approximately  136,000 shares of stock primarily as
payment for contingent consideration related to 1997 acquisitions.  In addition,
the Company issued  approximately  40,000 shares as bonuses to certain employees
and fees to directors.
</FN>
</TABLE>


The accompanying notes are an integral part of these financial statements.


<PAGE>


NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
JUNE 30, 1998


1.       CONSOLIDATION AND PRESENTATION

         The accompanying  unaudited condensed consolidated financial statements
of MasTec,  Inc.  ("MasTec" or the  "Company")  have been prepared in accordance
with generally accepted accounting  principles for interim financial information
and with the  instructions  for Form 10-Q and Rule 10-01 of Regulation S-X. They
do not  include  all  information  and  notes  required  by  generally  accepted
accounting  principles for complete  financial  statements and should be read in
conjunction with the audited financial  statements and notes thereto included in
the Company's  annual report on Form 10-K for the year ended  December 31, 1997.
The year end  condensed  balance  sheet data was derived from audited  financial
statements but does not include all disclosures  required by generally  accepted
accounting   principles.   The  financial  information  furnished  reflects  all
adjustments,  consisting  only of normal  recurring  accruals  which are, in the
opinion  of  management,  necessary  for a fair  presentation  of the  financial
position and results of  operations  for the periods  presented.  The results of
operations  are not  necessarily  indicative of future  results of operations or
financial position of MasTec.  Certain prior year amounts have been reclassified
to conform to the current presentation.

     During  the  second  quarter  of 1998,  the  Company's  management  applied
purchase  accounting  to two 1997  acquisitions  previously  accounted for using
pooling-of-interests. The change occurred due to transactions with management of
the acquired  companies  which occurred in the second quarter of 1998 and future
compensation  arrangements  currently under consideration that may have required
the use of purchase accounting. The change in accounting resulted in an increase
to capital surplus and intangible  assets of $53 million.  No other  significant
changes  to  previously  reported  balance  sheet  amounts  were  recorded.  The
resulting goodwill will be amortized over 40 years. As a result,  second quarter
and first half  results in 1998  include  amortization  expense of $333,000  and
$667,000,  respectively,  related to  additional  amortization  expense from the
change  in  accounting  method.  As a  result  of the  application  of  purchase
accounting, the Company's 1997 results by quarter were:

<TABLE>
<CAPTION>

                                        First Quarter     Second Quarter  Third Quarter    Fourth Quarter       Total
<S>                                       <C>               <C>            <C>              <C>               <C>

Revenue                                   $ 130,143         $ 141,499       $ 184,562       $ 203,235        $ 659,439

Operating income                             15,495            17,614          16,772           7,602           57,483
Net income                                    9,287            10,826           8,498           6,053           34,664
Basic earnings per share:
Weighted average common
   shares outstanding                        25,641            25,812          26,825          27,563           26,460
Basic earnings per share                  $    0.36         $    0.42       $    0.32       $    0.22        $    1.31
Diluted earnings per share:
Weighted average common
  shares outstanding                         26,068            26,421          27,552          28,036           27,019
Diluted earnings per share                $    0.36         $    0.41       $    0.31       $    0.22        $    1.28

</TABLE>

         Earnings per share are computed  independently for each of the quarters
presented. Therefore, the sum of the quarterly per share data does not equal the
total  computed  for the year due to changes in the weighted  average  number of
common shares outstanding.


2.       COMPREHENSIVE INCOME

         The Company has adopted the Statement of Financial Accounting Standards
("SFAS") No. 130, "Reporting  Comprehensive Income", which establishes standards
for the  reporting  and display of  comprehensive  income and its  components in
general purpose  financial  statements for the year ended December 31, 1998. The
table below sets forth "comprehensive income" as defined by SFAS No. 130 for the
three and six month period ended June 30:

<PAGE>

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
JUNE 30, 1998

<TABLE>
<CAPTION>

                                                                  Three months ended           Six months ended
                                                                       June 30,                     June 30,
<S>                                                                <C>          <C>           <C>            <C> 
                                                                   1998         1997          1998           1997
- -------------------------------------------------------------------------------------------------------------------

Net income (loss)                                              $   9,394     $  10,826     $ (2,706)      $  20,113
Other comprehensive income:
   Unrealized translation gain (loss)                                846        (1,061)        (458)         (1,606)
                                                                 -------        ------       ------          ------

Comprehensive income (loss)                                    $  10,240     $   9,765     $ (3,164)      $  18,507
                                                                 =======        =======      ======          ======

</TABLE>

3.       ACQUISITIONS

     During the six months ended June 30, 1998,  the Company  completed  certain
acquisitions  which  have  been  accounted  for  under  the  purchase  method of
accounting  and which results of operations  have been included in the Company's
condensed  consolidated  financial  statements  from the respective  acquisition
dates. If the  acquisitions  had been made at the beginning of 1998 or 1997, pro
forma  results of  operations  would not have  differed  materially  from actual
results. Acquisitions made in 1998 were M.E. Hunter, Inc. of Atlanta, Georgia, C
& S  Directional  Boring,  Inc.  of  Purcell,  Oklahoma,  Office  Communications
Systems,  Inc. of  Inglewood,  California,  Phasecom  Systems,  Inc. of Toronto,
Canada,  P&E  Electric  Company,  Inc. of  Nashville,  Tennessee,  Lessard-Nyren
Utilities,  Inc. of Hugo,  Minnesota,  Electronic Equipment  Analyzers,  Inc. of
Raleigh, North Carolina, Cotton and Taylor of Las Vegas, Nevada, and Stackhouse,
Inc. of Goldsboro,  North Carolina, nine  telecommunications  infrastructure and
utility  contractors  with  operations  primarily in the  western,  northern and
southeastern  United  States as well as Canada.  Additionally,  the Company made
three   international   acquisitions   of   telecommunications    infrastructure
contractors:  CIDE Engenharia Ltda. of Brazil, Acietel Mexicana,  S.A. of Mexico
and Artcom Services, Inc. of Puerto Rico.

DEBT
<TABLE>

         Debt is comprised of the following (in thousands):
<CAPTION>
<S>                                                                                     <C>            <C>
                                                                                        June 30,       December 31,
                                                                                          1998             1997
                                                                                          ----             ----

Revolving Credit Facility, at LIBOR plus 1.50% (6.68% at June 30, 1998
  and 6.96% at December 31, 1997)                                                     $  54,320        $  83,010
Revolving Credit Facility, at MIBOR plus 0.30 (5.60% at December 31, 1997)                    0           10,894
Other bank facilities,  denominated in Spanish  pesetas,  at interest rates from
   4.9% to 6.75% at June 30, 1998 and 5.65% to 6.75% at December 31, 1997
  due in 1999                                                                            23,213           17,438
Other bank facilities denominated in Brazilian reals at a weighted average
   rate of 27.7% at June 30, 1998                                                         6,144                0
Other bank facility at LIBOR plus 1.25% (6.43 at June 30, 1998)                           2,590                0
Notes payable for equipment, at interest rates from 7.5% to 8.5% due in
  installments through the year 2000                                                      8,814           14,500
Notes payable for acquisitions, at interest rates from 7% to 8% due in
  installments through February 2000                                                     30,291           23,215
Senior subordinated notes, 7.75% due 2008                                               199,736                0
                                                                                        -------          -------
Total debt                                                                              325,108          149,057
Less current maturities                                                                  59,277           54,562
                                                                                        -------          -------

Long-term debt                                                                        $ 265,831        $  94,495
                                                                                        =======          =======
</TABLE>


<PAGE>


NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
JUNE 30, 1998


         The Company has a $125.0 million revolving credit facility,  as amended
(the  "Credit  Facility")  from  a  group  of  financial   institutions  led  by
BankBoston, N.A. maturing on June 9, 2000. The Credit Facility is collateralized
by the stock of the Company's  principal domestic  subsidiaries and a portion of
the stock of Sintel, S.A., the Company's Spanish subsidiary ("Sintel"). In 1998,
the Credit Facility was amended to adjust certain of the financial covenants.

         Additionally,  the Company has several credit facilities denominated in
Spanish  Pesetas.  At June 30, 1998 and December 31, 1997, the Company had $45.3
million  (7.0  billion  Pesetas)  and  $50.6  million  (7.7  billion   Pesetas),
respectively,  of debt denominated in Pesetas, including $22.1 million and $22.3
million, respectively,  remaining under the acquisition debt incurred to acquire
Sintel.  The Company has paid a portion of the December 31, 1997  installment of
the acquisition debt, with the remaining amount to be paid pending resolution of
the offsetting amounts between the Company and Telefonica,  S.A. ("Telefonica"),
the previous owner.

         On January 30, 1998, the Company sold $200.0 million,  7.75% senior  
subordinated  notes (the "Notes") due in 2008 with interest due semi-annually.

         The Credit  Facility and Notes contain certain  covenants  that,  among
other things,  restrict the payment of dividends and limit the Company's ability
to incur additional debt, create liens,  dispose of assets, merge or consolidate
with another entity or make other  investments or acquisitions.  These covenants
also require the Company to maintain minimum amounts of stockholders' equity and
to meet certain financial ratio coverages,  among others,  minimum ratios at the
end of each fiscal quarter of debt to earnings and earnings to interest expense.


5.       OPERATIONS BY GEOGRAPHIC AREAS

         The  Company's   principal  source  of  revenue  is  the  provision  of
telecommunications  infrastructure construction services in North America, Spain
and  the  Caribbean  and  Latin  American  region  (CALA),   primarily   Brazil.
Significant CALA operations  commenced on August 1, 1997 with the acquisition of
MasTec Inepar.
<TABLE>
<CAPTION>

<S>                                                                    <C>             <C>
                                                                              As of June 30,
                                                                          1998             1997
                                                                       -------------------------
Revenue
  North America                                                        $ 275,476       $ 160,434
  Spain                                                                   91,820         111,208
  CALA                                                                    64,905               0
                                                                         -------         -------
Total                                                                  $ 432,201       $ 271,642
                                                                         =======         =======

Operating income (loss)
  North America (1)                                                    $  10,466       $  22,021
  Spain (2)                                                               (9,265)         11,088
  CALA                                                                     5,211               0
                                                                         -------         -------
Total                                                                  $   6,412       $  33,109
                                                                         =======         =======


Identifiable assets
  North America                                                        $ 377,112       $ 128,177
  Spain                                                                  129,242         168,911
  CALA                                                                    90,655               0
  Corporate                                                              224,613         144,154
                                                                         -------         -------
Total                                                                  $ 821,622       $ 441,242
                                                                         =======         =======
</TABLE>

         (1)  North  American   operations  were  impacted  by  several  factors
              including special  charges of $4.0 million in the first quarter of
              1998.
         (2)  Operating  loss in 1998 is due to  severance  charges  totaling  
              $13.4  million  recorded  in the first quarter of 1998.
<PAGE>

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
JUNE 30, 1998


     There are no material transfers between geographic areas.  Operating income
consists of revenue  less  operating  expenses,  and does not  include  interest
expense,  interest  and other  income,  equity  in  earnings  of  unconsolidated
companies,  minority interest and income taxes. Domestic operating income is net
of  corporate  general  and  administrative  expenses.  Identifiable  assets  of
geographic areas are those assets used in the Company's operations in each area.
Corporate   assets   include   cash  and  cash   equivalents,   investments   in
unconsolidated  companies,  real  estate  held for sale,  notes  receivable  and
goodwill  of $128.6  million  which is  included  in other  assets.  The Company
expects to broaden its segment disclosure to provide  additional  information on
product lines pursuant to FASB Statement No. 131  Disclosures  about Segments of
an Enterprise and Related Information.


6.       SIGNIFICANT CUSTOMERS AND CONCENTRATION OF CREDIT RISK

         The  Company  derives a  substantial  portion of its  revenue  from the
provision of telecommunications infrastructure services to Telefonica, BellSouth
Telecommunications   Corp.   ("BellSouth")   and  the  operating   companies  of
Telecomunicacoes  Brasileiras S.A.  ("Telebras").  For the six months ended June
30, 1998,  approximately  18%, 8% and 15% of the  Company's  revenue was derived
from services  performed for Telefonica,  BellSouth and Telebras,  respectively.
During the six months  ended June 30, 1997,  the Company  derived 33% and 11% of
its revenue from Telefonica and BellSouth. Although the Company's strategic plan
envisions  diversification of its customer base, the Company anticipates that it
will continue to derive a significant  portion of its revenue in the future from
these customers.


7.       COMMITMENTS AND CONTINGENCIES

         In December 1990, Albert H. Kahn, a stockholder of the Company, filed a
purported  class action and derivative  suit in Delaware state court against the
Company,  the  then-members  of its Board of  Directors,  and National  Beverage
Corporation  ("NBC"),  the  Company's  then-largest  stockholder.  The complaint
alleges,  among other  things,  that the  Company's  Board of Directors  and NBC
breached their respective fiduciary duties in approving certain transactions.

         In  November  1993,  Mr.  Kahn  filed a  class  action  and  derivative
complaint against the Company,  the then members of its Board of Directors,  and
Jorge L. Mas, Jorge Mas and Juan Carlos Mas, the principal  shareholders  of the
Company. The 1993 lawsuit alleges,  among other things, that the Company's Board
of Directors and NBC breached their respective fiduciary duties by approving the
terms of the  acquisition  of the  Company by the Mas  family,  and that the Mas
family had knowledge of the fiduciary duties owed by NBC and the Company's Board
of Directors and knowingly and substantially participated in the breach of these
duties.  The lawsuit also claims  derivatively that each member of the Company's
Board of  Directors  engaged in  mismanagement,  waste and  breach of  fiduciary
duties in managing the  Company's  affairs prior to the  acquisition  by the Mas
family.

         There has been no activity  in either of these  lawsuits in more than a
year.  The Company  believes  that the  allegations  in each of the lawsuits are
without merit and intends to defend these lawsuits vigorously.








NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
JUNE 30, 1998

         In November  1997,  Church & Tower,  Inc. a  subsidiary  of the Company
("Church and Tower") filed a lawsuit against Miami-Dade County (the "County") in
Florida state court alleging  breach of contract and seeking  damages  exceeding
$3.0  million in  connection  with the  County's  refusal to pay  amounts due to
Church & Tower under a multi-year agreement to perform road restoration work for
the Miami-Dade Water and Sewer Department  ("MWSD"), a department of the County,
and the County's wrongful  termination of the agreement.  The County has refused
to pay  amounts  due to  Church  &  Tower  under  the  agreement  until  alleged
overpayments  under the agreement  have been  resolved,  and has  counterclaimed
against the Company  seeking  damages that the Company  believes will not exceed
$2.1  million.  The  County  also has  refused  to award a new road  restoration
agreement  for MWSD to  Church & Tower,  which  was the low  bidder  for the new
agreement.  The Company  believes  that any amounts due to the County  under the
existing  agreement are not material and may be  recoverable in whole or in part
from Church & Tower  subcontractors  who actually  performed  the work and whose
bills were submitted directly to the County.

     The Company is a party to other  pending legal  proceedings  arising in the
normal course of business, none of which the Company believes is material to the
Company's financial position or results of operations.

     The  Company,  from  time  to  time,  may  provide  customer  financing  in
connection with the provision of its services.  As of June 30, 1998, the Company
had entered  into one such  financing  agreement to provide up to $50 million of
financing to one  customer.  As of June 30,  1998,  the Company had $7.5 million
outstanding under this agreement.  Additionally,  the Company has commitments to
purchase  approximately  $27.0 million of  telecommunications  equipment  over a
three year period for a PCS wireless network in Paraguay.

<PAGE>


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


         Certain statements in this Quarterly Report are  forward-looking,  such
as statements  regarding the Company's  future growth and  profitability.  These
forward looking statements are based on the Company 's current  expectations and
are  subject  to a number of risks and  uncertainties  that could  cause  actual
results in the future to significantly  differ from results expressed or implied
in any forward-looking statements included in this Quarterly Report. These risks
and uncertainties  include,  but are not limited to, the Company's  relationship
with  key  customers,  implementation  of the  Company's  growth  strategy,  and
seasonality.  These and other risks are detailed in this Quarterly Report and in
other   documents  filed  by  the  Company  with  the  Securities  and  Exchange
Commission.

Overview

         MasTec is one of the world's  largest  contractors  specializing in the
build-out  of  telecommunications  and  other  utilities   infrastructure.   The
Company's  business consists of the design,  installation and maintenance of the
outside physical plant for telephone and cable television communications systems
and of  integrated  voice,  data and video local and wide area  networks  inside
buildings, and the installation of central office telecommunications  equipment.
The Company also provides  infrastructure  construction services to the electric
power industry and other public utilities.

     During the six months ended June 30, 1998,  the  Company's  North  American
operations  were  affected  by a number  of  factors  including  severe  weather
conditions experienced during the first quarter of 1998, among other things, and
performance  issues in two divisions  related to pricing on a certain  contracts
some of which are currently being negotiated.

     In March 1998,  Sintel entered into an agreement with its unions to resolve
its pending labor  dispute.  As a result of the agreement  reached,  the Company
recorded a severance charge related to operational  personnel and administrative
personnel of $1.9 million and $11.5 million,  respectively.  The total charge of
$13.4 million negatively  impacted the Company's  operating margins in the first
quarter of 1998. While management  anticipates a reduction in ongoing  operating
costs to result from these measures,  the Company recognizes that it services an
increasingly  competitive  telephony  industry  in  the  Spanish  market  and  a
substantial  portion of any savings may be offset by more competitive  prices to
Telefonica and other customers.  As of June 30, 1998, the Company had terminated
131 workers at a cost of $6.9 million.

     In July 1998, the Brazilian government privatized its wireline and wireless
telephone companies.  As a result of the privatization,  the Company anticipates
that it will increase its sales in the CALA region. However, global deregulation
and consolidation  within the  telecommunications  industry may delay or depress
capital  spending  among  telecommunications  providers as they assess their new
business plans and strategies and focus on administrative and operational issues
associated with their acquisitions or alliances.
<PAGE>



Results of Operations

     Revenue is generated primarily from  telecommunications and other utilities
infrastructure  services.  Infrastructure  services  are  provided to  telephone
companies,    public    utilities,    cable    television    operators,    other
telecommunications  providers,  governmental  agencies  and private  businesses.
Costs of  revenue  includes  subcontractor  costs and  expenses,  materials  not
supplied by the customer, fuel, equipment rental, insurance,  operations payroll
and employee benefits.  General and  administrative  expenses include management
salaries and benefits, rent, travel, telephone and utilities,  professional fees
and clerical and administrative overhead.

         The following  table sets forth  certain  supplemental  information  by
geographic region for the three and six months ended June 30, 1998 (in thousands
unless otherwise indicated):

<TABLE>
<CAPTION>

                            

                                Three Months Ended June 30,                          Six Months Ended June 30,
                                   1998                1997                          1998                1997
<S>                           <C>       <C>        <C>     <C>                <C>        <C>       <C>        <C>
Revenue by region
North America                $ 165,074  67.1%   $  86,000  60.8%              $ 275,476   63.7%    $ 160,434   59.1%
Spain                           45,877  18.6%      55,499  39.2%                 91,820   21.3%      111,208   40.9%
CALA (1)                        35,155  14.3%           -   0.0%                 64,905   15.0%            -    0.0%
                               ------- -----      ------- -----                 -------  -----       -------  -----
                             $ 246,106 100.0%   $ 141,499 100.0%              $ 432,201  100.0%    $ 271,642  100.0%
                               ======= =====      ======= =====                 =======  =====       =======  =====

Operating Income/(loss) (2)
by region
North America (3)            $  13,534  8.2%    $  11,887  13.8%              $  14,466   5.3%     $  22,021   13.7%
Spain (4)                        3,296  7.2%        5,727  10.3%                  4,135   4.5%        11,088   10.0%
CALA (5)                         3,181  9.0%            -                         5,211   8.0%             -
                               ------- ----       ------- -----                 -------  ----        -------
                             $  20,011  8.1%    $  17,614  12.4%              $  23,812   5.5%     $  33,109   12.2%
                               ======= ====       ======= =====                 =======  ====        =======  =====

Sales in Local Currencies
Spanish Peseta (Millions)        6,984              8,040                        14,068               15,840
Brazilian Real (Thousands)      38,740                  -                        72,275                    -

Average Exchange Rate
Spanish Peseta                  152.23             144.89                        153.21                142.4
Brazilian Real                    1.16                  -                          1.14                    -
<FN>


 (1)  Includes  consolidated  operations  in the  Caribbean  and Latin  American
      regions - primarily Brazil which commenced August 1997.
 (2)  Percentages expressed relative to regional revenue amount
 (3)  Excludes  restructuring  charges  of $4.0  million  recorded  in the first
      quarter of 1998. 
 (4)  Excludes  restructuring  charges of $13.4 million recorded in the first
      quarter of 1998. 
 (5)  Amount is before  minority  interest of $934 thousand and $1.79 million 
      respectively for the three and six months ended June 30, 1998.
</FN>
</TABLE>



<PAGE>

<TABLE>

                    Three Months Ended June 30, 1998 compared to Three Months Ended June 30, 1997

         The  following  table  sets  forth  certain   historical   consolidated
financial  data as a  percentage  of revenue for the three months ended June 30,
1998 and 1997.
<CAPTION>

                                                                                  1998                  1997
<S>                                                                             <C>                   <C>    
                                                                                  ----                  ----

Revenue                                                                          100.0%                100.0%
Costs of revenue                                                                  75.7%                 72.0%
Depreciation and amortization                                                      4.4%                  3.2%
General and administrative expenses                                               11.8%                 12.4%
Operating margin                                                                   8.1%                 12.4%
Interest expense                                                                   2.9%                  1.8%
Interest and dividend income and other income, net,
  equity in unconsolidated companies and minority interest                         1.1%                  1.0%
Income from operations before
  provision for income taxes                                                       6.3%                 11.6%
Provision for income taxes                                                         2.5%                  3.9%
Net income                                                                         3.8%                  7.7%
</TABLE>


     Revenue  increased $104.6 or 73.9% to $246.1 million in 1998 as compared to
$141.5 million in 1997. Revenue from North American  operations  increased $79.1
million, or 92%, to $165.1 million in 1998 as compared to $86.0 million in 1997.
North American revenue growth was primarily generated by acquisitions  completed
in the latter part of 1997 and during 1998.  Revenue  generated by international
operations  increased $25.5 million,  or 46%, to $81 million in 1998 as compared
to $55.5  million  in 1997  due  primarily  to the  inclusion  of the  Company's
Brazilian  operations,  which  contributed  $33.8  million to 1998  results.  In
Spanish  Pesetas,  revenue  declined  13.1%  as a  result  of less  spending  by
Telefonica in Spain during the quarter as it has shifted its investment priority
to Latin America,  specifically,  Brazil. As a result of the reduced spending by
Telefonica in Spain,  the Company is seeking to diversity  its Spanish  customer
base.

     Gross profit  (revenue less cost of revenue),  excluding  depreciation  and
amortization,  increased $20.2 million,  or 50.9%, to $59.9 million, or 24.3% of
revenue in 1998 as compared to $39.7 million, or 28.0% of revenue in 1997. North
American  gross margins  (gross profit as a percentage of revenue)  decreased to
25.7% in 1998 from 28% in 1997.  The  decline in gross  margins  was related to,
among other things,  pricing on certain  contracts,  some of which are currently
being negotiated.  In addition,  1997 results were favorably impacted by certain
short-term  projects  with  attractive  pricing.   International  gross  margins
decreased  to 21.6% in 1998 as  compared to 28.2% in 1997  primarily  due to the
increase  in  labor  costs  associated  with a new  labor  agreement  in  Spain.
Additionally,  the Company's newly formed Brazilian  operations  reflected lower
margins  of  15.5%  due  to  the  fact  that  it  operates   primarily   through
subcontractors.

     Depreciation and amortization  increased $6.4 million,  or 142.2%, to $10.9
million in 1998 from $4.5  million in 1997.  The  increase in  depreciation  and
amortization   was  a  result  of   increased   amortization   associated   with
acquisitions,  as well as increased capital expenditures from the latter part of
1997  through  the  second   quarter  of  1998.  As  a  percentage  of  revenue,
depreciation  and  amortization  was 4.4% and 3.2% of revenue for 1998 and 1997,
respectively.

     General and administrative  expenses increased $11.3 million,  or 64.2%, to
$28.9  million,  or 11.8% of revenue  for 1998 from $17.6  million,  or 12.4% of
revenue  for 1997.  The  increase  in dollar  amount is  primarily  due to North
American general and administrative  expenses which were $19.2 million, or 11.6%
of North American revenue in 1998, compared to $8.3 million, or 9.7% of domestic
revenue  for 1997.  The  increase  in  dollar  amount of  domestic  general  and
administrative expenses is due primarily to acquisitions, and an increase in the
allowance for doubtful accounts of $1.0 million  in connection with management's
ongoing  evaluation  of the  collectability  of its  receivables.  International
general and  administrative  expenses  increased $0.6 million,  or 6.5%, to $9.8
million,  or 12.1% of international  revenue in 1998 from $9.2 million, or 16.6%
of international  revenue for 1997. General and administrative  expenses for the
Company's  CALA  region were  approximately  $1.8  million.  The Company did not
operate in this region until August 1997.

     The Company  generated  operating  income of $20 million or 8.1% of revenue
for 1998  compared  to $17.6  million  or 12.4% of revenue  for 1997.  Favorably
impacting 1997 operating income were short-term projects with attractive pricing
and terms as well as higher volume and margins for its Spanish operations during
1997.

     Interest expense increased $4.5 million or 173.1%, to $7.1 million for 1998
from $2.6 in 1997  primarily due to the Company's  $200.0  million bond offering
completed in February 1998.  Offsetting the increase was lower interest rates on
Spanish borrowings. See -"Financial Condition, Liquidity and Capital Resources."

     Interest income and other income,  net equity in  unconsolidated  companies
and  minority  interest  remained  basically  unchanged  in the  aggregate  when
compared to the 1997 period, however interest income increased significantly due
to temporary  short-term  investments offset by an increase in minority interest
attributable to the Company's Brazilian operations.

     Provision  for  income  taxes was $6.1  million,  or 38.0% of  income  from
continuing  operations  before equity in earnings of  unconsolidated  companies,
taxes and minority  interests in 1998,  compared to a provision of $5.6 million,
or 35.1% of income  from  continuing  operations  before  equity in  earnings of
unconsolidated companies,  taxes and minority interests in 1997. The increase in
the effective  tax rate was  primarily  due to 58% of pre-tax  earnings for 1998
having  been  derived  from North  American  operations,  which are subject to a
higher effective tax rate.

<TABLE>

                      Six Months Ended June 30, 1998 compared to Six Months Ended June 30, 1997
<CAPTION>

         The  following  table  sets  forth  certain   historical   consolidated
financial data as a percentage of revenue for the six months ended June 30, 1998
and 1997.
<S>                                                                              <C>                   <C>
                                                                                  1998                  1997
                                                                                  ----                  ----

Revenue                                                                          100.0%                100.0%
Costs of revenue                                                                  78.5%                 71.8%
Depreciation and amortization                                                      4.4%                  3.1%
General and administrative expenses                                               15.6%                 13.0%
Operating margin                                                                   1.5%                 12.1%
Interest expense                                                                   2.8%                  2.0%
Interest and dividend income and other income, net,
  equity in unconsolidated companies and minority
  interest                                                                         0.9%                  1.1%
(Loss) income from operations before
  provision for income taxes                                                      (0.4)%                11.2%
Provision for income taxes                                                         0.2%                  3.8%
Net (loss) income                                                                 (0.6)%                 7.4%
</TABLE>

     Revenue  increased  $160.6 million,  or 59.1%, to $432.2 million in 1998 as
compared to $271.6 million in 1997.  North  American  revenue  increased  $115.1
million,  or 71.8% from $160.4 million to $275.5 million.  The increase in North
American revenue was primarily generated by acquisitions completed in the latter
part of 1997 and 1998. Revenue generated by international  operations  increased
$45.5 million, or 40.9%, to $156.7 million in 1998 as compared to $111.2 million
in 1997 due  primarily to the inclusion of the  Company's  Brazilian  operations
which contributed  $63.5 million to 1998 results.  The Company's Spanish revenue
was  negatively  impacted  in 1998 by a  reduction  in the volume of work by its
major customer,  Telefonica whose investment focus has shifted to Latin America,
specifically Brazil. As a result of the reduced spending by Telefonica in Spain,
the Company is seeking to diversify its Spanish customer base.

     Gross profit  (revenue less cost of revenue),  excluding  depreciation  and
amortization,  increased $16.4 million,  or 21.4%,  to $93 million,  or 21.5% of
revenue in 1998 as compared to $76.6  million,  or 28.2% of revenue in 1997. The
decrease in gross profit as a percentage  of revenue was due  primarily to lower
productivity due to severe weather  conditions  experienced in the first quarter
of 1998 by the Company's North American operations. North American gross margins
(gross profit as a percentage of revenue)  decreased to 22.7% in 1998 from 28.0%
in 1997 and the completion of certain  higher margin  domestic jobs during 1997.
The decline in gross  margins was related  to,  among other  things,  pricing on
certain  contracts,  some of which are currently being negotiated.  In addition,
1997  results  were  favorably  impacted  by certain  short-term  projects  with
attractive  pricing.  International  gross margins decreased to 19.4% in 1998 as
compared  to  28.5%  in  1997  primarily  due to the  increase  in  labor  costs
associated  with its new labor  agreement in Spain and a $1.9 million charge for
severance for direct labor personnel.  Additionally,  the Company's newly formed
Brazilian  operations  have  lower  margins  of 15.7%  due to the  fact  that it
operates primarily through subcontractors.

     Depreciation and amortization  increased $10.9 million, or 131.3%, to $19.2
million in 1998 from $8.3  million in 1997.  The  increase in  depreciation  and
amortization was a result of increased  capital  expenditures in the latter part
of 1997 and the first quarter of 1998, as well as depreciation  and amortization
associated  with  acquisitions.  As a percentage  of revenue,  depreciation  and
amortization was 4.4% and 3.1% of revenue for 1998 and 1997, respectively.

     General and administrative  expenses increased $32.2 million,  or 91.5%, to
$67.4  million,  or 15.6% of revenue  for 1998 from $35.2  million,  or 13.0% of
revenue for 1997.  The increase is primarily due to North  American  general and
administrative  expenses which were $35.1 million,  or 12.8% of domestic revenue
in 1998,  compared to $16.0 million,  or 10.0% of domestic revenue for 1997. The
increase in dollar amount of domestic general and administrative expenses is due
primarily to acquisitions.  International  general and  administrative  expenses
increased $13.1 million,  or 68.2%, to $32.3 million,  or 20.6% of international
revenue in 1998 from $19.2 million, or 17.2% of international  revenue for 1997.
The increase in Spain's general and administrative expenses was primarily due to
severance  charges of $12.9 million  associated with the agreement  reached with
the union to reduce  administrative  personnel in excess of 200 people.  General
and  administrative  expenses for the Company's  CALA region were  approximately
$4.2 million. The Company did not operate in this region until August 1997.

     The Company  generated  operating income of $6.4 million or 1.5% of revenue
for 1998  compared  to $33.1  million  or 12.1% of revenue  for 1997.  Favorably
impacting 1997 operating income were short-term projects with attractive pricing
and terms.

     Interest expense  increased $6.6 million or 120%, to $12.1 million for 1998
from $5.5 in 1997  primarily due to the Company's  $200.0  million bond offering
completed in February  1998. See - "Financial  Condition,  Liquidity and Capital
Resources."

     Interest income and other income,  net equity in  unconsolidated  companies
and  minority  interest  remained  basically  unchanged  in the  aggregate  when
compared to the 1997 period,  however,  interest income increased  significantly
due to  temporary  short-term  investments  offset by an  increase  in  minority
interest attributable to the Company's Brazilian operations.

Financial Condition, Liquidity and Capital Resources

     The Company's primary  liquidity needs are for working capital,  to finance
acquisitions and capital expenditures and to service the Company's indebtedness.
The Company's  primary sources of liquidity have been cash flow from operations,
borrowings  under  revolving  lines of credit and the proceeds  from the sale of
investments and non-core assets.

     Net cash  provided by  operating  activities  for the 1998 period was $13.2
million,  compared to $29.8 million in the 1997 period. This decrease was due to
a  breakeven  result in the first  quarter  of 1998  absent  charges  previously
discussed  and  fluctuations  in  working  capital,  particularly  increases  in
accounts  receivable  and unbilled  revenue from  Brazilian  and North  American
operations.

<PAGE>


     The Company  invested  cash,  net of cash  acquired,  in  acquisitions  and
investments  in  unconsolidated  companies  totaling  $65.3 million  during 1998
compared  to $15.3  million in 1997.  During  1998,  the  Company  made  capital
expenditures of $32.7 million, primarily for machinery and equipment used in the
production of revenue, compared to $8.2 million in 1997.

     As of June 30, 1998,  working capital  totaled $180.4 million,  compared to
working  capital of $124.1  million at December  31,  1997.  Included in working
capital at June 30,  1998 were  temporary  investments  of  approximately  $20.0
million.

     The Company  continues to pursue a strategy of growth through  acquisitions
and internal  expansion.  During 1998, the Company completed 12 acquisitions for
$66.3 million in cash and seller  financing of $8.6 million.  Additionally,  the
Company believes that there are significant business opportunities  available to
it that may require the Company to provide customer financing in connection with
the sale of its services.  As of June 30, 1998, the Company had entered into one
such  financing  agreement  to provide up to $50  million  of  financing  to one
customer.  As of June 30, 1998, the Company had $7.5 million  outstanding  under
this agreement.  The Company anticipates customer financing will increase in the
future.  Additionally,  the Company has  commitments  to purchase  approximately
$27.0  million over a 3 year period of  telecommunications  equipment  for a PCS
wireless network in Paraguay.

     The Company believes that cash generated from operations,  borrowings under
its Credit  Facility  and  proceeds  from the sale of  investments  and non-core
assets will be sufficient to finance  these  payments,  as well as the Company's
working capital needs, capital expenditures and debt service obligations for the
foreseeable  future.  Future acquisitions and internal growth are expected to be
financed from these sources, as well as other external financing sources, to the
extent necessary, including the additional borrowings.

     The Company  announced a stock  repurchase  program in April 1998.  Through
July 24,  1998,  the  Company has  purchased  a total of 496,700  shares with an
average price of $21.54.  The Company may continue to purchase  shares from time
to time. The Credit Facility restricts the amount of shares that the Company may
repurchase up to an additional $3.3 million.

     In February 1998, the Company  issued $200.0  million  principal  amount of
7.75%  Senior  Subordinated  Notes  (the  "Notes")  due 2008 with  interest  due
semi-annually.  The Credit  Facility  and the Notes  contain  certain  covenants
which,  among other  things,  restrict  the payment of  dividends  and limit the
Company's  ability to incur  additional debt,  create liens,  dispose of assets,
merge  or  consolidate  with  another  entity  or  make  other   investments  or
acquisitions.  These  covenants  also  require the  Company to maintain  minimum
amounts of shareholders'  equity and to meet certain  financial ratio coverages,
among  others,  minimum  ratios  at the end of each  fiscal  quarter  of debt to
earnings and earnings to interest  expense.  See Note 4 of Notes to Consolidated
Financial Statements.

     The  Company  conducts  business  in several  foreign  currencies  that are
subject to  fluctuations in the exchange rate relative to the U.S.  dollar.  The
Company  does not enter into foreign  exchange  contracts.  It is the  Company's
intent to utilize foreign  earnings in the foreign  operations for an indefinite
period of time. In addition,  the Company's  results of operations  from foreign
activities are translated into U.S.  dollars at the average  prevailing rates of
exchange  during the period  reported,  which  average rates may differ from the
actual  rates of  exchange in effect at the time of the actual  conversion  into
U.S. dollars.

     The Company's  current and future  operations  and  investments  in certain
foreign countries are generally  subject to the risks of political,  economic or
social  instability,  including the possibility of  expropriation,  confiscatory
taxation,   hyper-inflation   or  other  adverse   regulatory   or   legislative
developments,  or limitations on the repatriation of investment income,  capital
and other assets.  The Company cannot  predict  whether any of such factors will
occur in the future or the extent to which  such  factors  would have a material
adverse effect on the Company's international operations.
Year 2000

     The  Company  has been  assessing  the impact that the Year 2000 issue will
have on its computer systems,  including both hardware and software. The Company
has also initiated formal  communications with all of its significant  suppliers
and large  customers to determine  the extent to which the  Company's  interface
systems are vulnerable to those third parties'  failures to remediate  their own
Year 2000 issue.  Assuming  that  remediation  projects  can be  implemented  as
planned,  the Company  believes  future  costs  relating to the Year 2000 issue,
which will be expensed as incurred,  will not have a material  adverse impact on
the Company's business, operations or financial condition.

<PAGE>


PART II - OTHER INFORMATION



Item 1.  Legal Proceedings.

                  See Note 7 to the Condensed Consolidated Financial Statements.

Item 2.  Changes in Securities.

                  None.

Item 3.  Defaults upon Senior Securities.

                  None.

Item 4.  Submission of Matters to a Vote of Security-Holders.

                  The 1998 Annual Meeting of  Stockholders  of MasTec,  Inc. was
held on May 14, 1998 for the purpose of: (1)  electing  two Class III  directors
for a three-year  term ending at the annual meeting of  stockholders in 2001 and
(2) the reincorporation of the Company from Delaware to Florida.
<TABLE>
<CAPTION>


                  The  following  summarizes  the  results  of the vote for each
issue listed above:
<S>     <C>                          <C>                   <C>                 <C>                   <C>    

                                                             Number of Shares Voted
Issue                                    For               Withheld              Against             Abstaining
  1a   Arthur B. Laffer               20,381,202            19,697
  1b   Jose S. Sorzano                20,377,601            23,298
  2    Reincorporation                16,133,657                               2,145,736              199,505

</TABLE>

Item 5.  Other Information.

                  None.

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

                           (a)       Exhibits.

3.1                                  Articles  of   Incorporation  of  the
                                     company, filed as Exhibit 3.1 to Form
                                     8-K   dated   May   29,    1998   and
                                     incorporated by reference herein.

3.2                                 Bylaws of the  company,  filed as Exhibit 
                                    to Form 8-K dated May 29,  1998 and
                                        incorporated by reference herein.

4.1                                 7 3/4% Senior Subordinated notes Due 2008 
                                    Indenture dated as of February 4, 1998, 
                                    filed as Exhibit 4.2 to the Company's  
                                    Registration  Statement on From S-4
                                    (file No. 333-46361) and incorporated by
                                    reference herein.

10.1                                First Amendment to Revolving Credit 
                                    Agreement between the Company, certain of 
                                    its subsidiaries, and Bank Boston, N.A., as
                                    agent.

27.1                Article 5 - Financial Data Schedules.

                           (b)      Report on Form 8-K.

                                    On June 29,  1998 the  company  filed a Form
                                    8-K  Current   Report  dated  May  29,  1998
                                    reporting  information  under item 5 thereof
                                    regarding   the   change  in  the  Company's
                                    domicile from Delaware to Florida.


<PAGE>



                                   SIGNATURES


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


                                             MasTec, Inc.
                                             Registrant




Date:  August 14, 1998                       /s/ Stephen D. Daniels
                                             ----------------------
                                             Stephen D. Daniels
                                             Senior Vice President-
                                             Chief Financial Officer
                                             (Principal Financial and
                                             Accounting Officer)



                          FIRST AMENDMENT TO REVOLVING
                                CREDIT AGREEMENT


         THIS  FIRST  AMENDMENT  TO  REVOLVING  CREDIT  AGREEMENT  (this  "First
Amendment") is made and entered into as of the 28th day of January, 1998, by and
among MASTEC,  INC., a Delaware  corporation  (the "Parent"),  its  Subsidiaries
(other than Excluded Subsidiaries and members of the MasTec International Group)
listed on Schedule 1 to the Credit  Agreement  defined below  (together with the
Parent,  collectively  the  "Borrowers"),   TELE-COMMUNICATIONS  CORPORATION  OF
VIRGINIA,  a  Virginia  corporation,  E. L.  DALTON  &  COMPANY,  INC.,  a Texas
corporation,   NORTHLAND  CONTRACTING,  INC.,  a  Minnesota  corporation,  WILDE
CONSTRUCTION,  INC., a Minnesota  corporation,  WILDE OPTICAL  SERVICE,  INC., a
Minnesota  corporation,  WILDE  ACQUISITION  CO., INC., a Delaware  corporation,
WILDE HOLDING CO., INC., a Delaware  corporation,  WEEKS CONSTRUCTION COMPANY, a
North  Carolina  corporation,  AIDCO,  INC.,  a  California  corporation,  AIDCO
SYSTEMS,  INC., a California  corporation,  and G.J.S.  CONSTRUCTION COMPANY, an
Arizona corporation,  (collectively,  the "New U.S. Subsidiaries"),  BANKBOSTON,
N.A.,  CREDITANSTALT-BANKVEREIN,  FIRST  UNION  NATIONAL  BANK OF  FLORIDA,  THE
SUMITOMO  BANK,  LIMITED,  SCOTIABANC  INC.,  THE FUJI BANK AND  TRUST  COMPANY,
COMERICA BANK and LTCB TRUST COMPANY (collectively, the "Banks") and BANKBOSTON,
N.A. as agent (the "Agent") for the Banks.

         WHEREAS,  the  Borrowers,  the  Banks  and  the  Agent  entered  into a
Revolving  Credit  Agreement dated as of June 9, 1997 (the "Credit  Agreement"),
pursuant to which the Banks  extended  credit to the  Borrowers on the terms set
forth therein;

         WHEREAS,  the Parent has informed the Banks that it has acquired all of
the capital stock of  Tele-Communications  Corporation of Virginia, E. L. Dalto
& Company,  Inc., Northland Contracting,  Inc., Wilde Construction,  Inc., Wilde
Optical Service, Inc., Weeks Construction  Company,  Aidco, Inc., Aidco Systems,
Inc., G.J.S.  Construction  Company,  and E.L. Dalton Equipment Co., Inc., a 
Texas corporation, and has formed Wilde Acquisition Co., Inc. and Wilde Holding
Co., Inc.;

         WHEREAS,  the Parent has informed the Banks that E.L. Dalton  Equipment
Co.,  Inc. has merged into E. L. Dalton & Company, Inc., Burnup & Sims TSI, Inc.
has merged into Shanco Corporation,  and  Harrison-Wright  Co., Inc. has merged 
into Burnup & Sims of the Carolinas, Inc.(surviving as "Harrison-Wright Co., 
Inc.");

         WHEREAS, it is a condition to the Credit Agreement that the New U.S. 
Subsidiaries become parties to the Credit Agreement; and

         WHEREAS,  the parties desire to amend the Credit Agreement to make the
New U.S.  Subsidiaries parties thereto on the terms set
forth herein;

         NOW, THEREFORE,  in consideration of the foregoing,  and for other good
and  valuable  consideration,  the receipt and  sufficiency  of which are hereby
acknowledged, the parties agree to amend the Credit Agreement as follows:

         1.       Definitions.  Capitalized terms used herein without definition
shall have the meanings assigned to such terms in the Credit Agreement.

         2.  Amendments to the Credit Agreement.  As of the Effective Date (as 
hereinafter defined):

                  (a) Schedule 1 to the Credit  Agreement  is hereby  amended by
         deleting such Schedule 1 in its entirety and  substituting the Schedule
         1 attached hereto in place thereof.  Each of the New U.S.  Subsidiaries
         agrees that it has the rights and  obligations  of a Borrower under the
         Credit Agreement and shall be liable under the Notes as a Borrower.

                  (b) Section 4.13 of the Credit  Agreement is hereby amended by
         deleting the second  sentence in its entirety and  substituting  in its
         place  thereof  the  following:  "Any  Subsidiary  which is required to
         become a  Borrower  pursuant  to the terms of this  ss.4.13  shall sign
         Notes, shall enter into a joinder and affirmation to this Agreement and
         the U.S. Stock Pledge Agreement in substantially  the form of Exhibit F
         attached hereto  providing that such Subsidiary shall become a Borrower
         hereunder,  and shall provide such other documentation as the Agent may
         reasonably request, including,  without limitation,  documentation with
         respect to conditions specified in ss.9 hereof."

                  (c) Section  7.4(c) of the Credit  Agreement is hereby amended
         by  inserting  the  phrase  ",  such  contingent  payments  to  include
         non-compete   agreements"  immediately  before  the  close  parenthesis
         thereof.

                  (d) Section 11 of the Credit  Agreement  is hereby  amended by
         adding the  following at the end of the paragraph  thereof:  "The Agent
         may from time to time, in its discretion, release Collateral,  provided
         that the aggregate  value of such released  Collateral  does not exceed
         five  percent  (5%) of the  consolidated  net  worth  of the  Borrowers
         determined in accordance with GAAP."

                  (e) Exhibit F is hereby  added to the Credit  Agreement in the
         form attached hereto.

         3.  Effectiveness.  This First  Amendment  shall be effective as of the
date hereof,  subject to the receipt by the Agent of this First  Amendment  duly
and properly authorized, executed and delivered by the respective parties hereto
(such date being  referred to as the  "Effective  Date").  This First  Amendment
shall become effective upon satisfaction of each of the following conditions:

                  (a)      This First Amendment shall have been executed and 
         delivered by the respective parties hereto;

                  (b)  The  New  U.S.   Subsidiaries  shall  have  executed  and
         delivered to the Agent allonges to the Notes  reflecting their addition
         as Borrowers described in ss.2 of this First Amendment;

                  (c) The New U.S.  Subsidiaries  shall  have  delivered  to the
         Agent certified copies of corporate resolutions of each of the New U.S.
         Subsidiaries satisfactory to the Agent authorizing this First Amendment
         and all related documents;

                  (d) Each of E. L. Dalton & Company,  Inc., Shanco  Corporation
         and Harrison-Wright  Co., Inc. shall have delivered to the Agent copies
         of certificates  and/or plans of merger filed with its charter or other
         incorporation documents, certified by the Secretary of State of each of
         their jurisdictions of incorporation; and

                  (e)   The   Parent,   Harrison-Wright   Co.,   Inc.,   Latlink
         Corporation,  MasTec International,  Inc., Wilde Acquisition Co., Inc.,
         Wilde Holding Co., Inc. and Aidco,  Inc. (the  "Pledgors")  and the New
         U.S.  Subsidiaries  shall have  executed  and  delivered to the Agent a
         First  Amendment to U.S. Stock Pledge  Agreement and the Pledgors shall
         have delivered any and all stock  certificates  representing  shares of
         stock in the New U.S.  Subsidiaries to the Agent, together with undated
         stock powers related thereto.

         4.  Representations and  Warranties.  Each of the Borrowers (including,
without limitation, the New U.S. Subsidiaries) represents and warrants as 
follows:

                  (a) The  execution,  delivery and  performance of each of this
         First Amendment,  the First Amendment to U.S. Stock Pledge Agreement of
         even date  herewith,  the Credit  Agreement  and the U.S.  Stock Pledge
         Agreement dated of June 9, 1997, among the Parent, Burnup & Sims of the
         Carolinas,  Inc., Latlink Corporation,  MasTec International,  Inc. and
         the Agent,  each as amended as of the date hereof and the  transactions
         contemplated  hereby and  thereby  are within the  corporate  power and
         authority  of such  Borrower  and have  been or will be  authorized  by
         proper  corporate  proceedings,  and do not (a)  require any consent or
         approval of the  stockholders  of such  Borrower,  (b)  contravene  any
         provision of the charter  documents or by-laws of such  Borrower or any
         law, rule or regulation  applicable to such Borrower, or (c) contravene
         any provision of, or constitute an event of default or event which, but
         for the requirement that time elapse or notice be given, or both, would
         constitute an event of default  under,  any other  material  agreement,
         instrument or undertaking binding on such Borrower.

                  (b) This First  Amendment,  the First  Amendment to U.S. Stock
         Pledge Agreement of even date herewith, the U.S. Stock Pledge Agreement
         and the Credit  Agreement  as amended as of the date  hereof and all of
         the terms and  provisions  hereof and thereof are the legal,  valid and
         binding  obligations of such Borrower  enforceable  in accordance  with
         their  respective  terms except as limited by  bankruptcy,  insolvency,
         reorganization,  moratorium or other laws affecting the  enforcement of
         creditors'  rights  generally,  and  except as the  remedy of  specific
         performance or of injunctive relief is subject to the discretion of the
         court before which any proceeding therefor may be brought.

                  (c) The  execution,  delivery  and  performance  of this First
         Amendment,  the First Amendment to U.S. Stock Pledge  Agreement of even
         date herewith, the U.S. Stock Pledge Agreement and the Credit Agreement
         as amended  as of the date  hereof  and the  transactions  contemplated
         hereby and thereby do not require any approval or consent of, or filing
         or registration with, any governmental or other agency or authority, or
         any other party.

                  (d) The representations and warranties  contained in Section 5
         of the Credit  Agreement are true and correct in all material  respects
         as of the date hereof as though made on and as of the date hereof.

                  (e) No Default or Event of Default under the Credit  Agreement
         has occurred and is continuing.

         5.  Ratification,  etc. Except as expressly amended hereby,  the Credit
Agreement,  the  other  Loan  Documents  and  all  documents,   instruments  and
agreements related thereto are hereby ratified and confirmed in all respects and
shall  continue in full force and effect.  This First  Amendment  and the Credit
Agreement shall hereafter be read and construed  together as a single  document,
and  all  references  in the  Credit  Agreement  or  any  related  agreement  or
instrument to the Credit Agreement shall hereafter refer to the Credit Agreement
as amended by this First Amendment.

         6.  GOVERNING  LAW.  THIS  FIRST  AMENDMENT  SHALL BE  GOVERNED  BY AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE COMMONWEALTH OF  MASSACHUSETTS  AND
SHALL TAKE EFFECT AS A SEALED INSTRUMENT IN ACCORDANCE WITH SUCH LAWS.

         7. Counterparts.  This First Amendment may be executed in any number of
counterparts and by different parties hereto on separate  counterparts,  each of
which when so executed  and  delivered  shall be an  original,  but all of which
counterparts  taken  together  shall be  deemed to  constitute  one and the same
instrument.


<PAGE>


         IN WITNESS  WHEREOF,  each of the  undersigned  have duly executed this
First Amendment under seal as of the date first set forth above.

                                    The Borrowers:

                                    MASTEC, INC.



                                    By:___________________________________
                                        Name:
                                        Title:

                                    B & D CONTRACTORS OF SHELBY, INC.
                                    BURNUP & SIMS OF TEXAS, INC.
                                    HARRISON-WRIGHT CO., INC.
                                    UTILITY PRECAST, INC.
                                    BURNUP & SIMS TELCOM OF FLORIDA, INC.
                                    CHURCH & TOWER ENVIRONMENTAL, INC.
                                    CHURCH & TOWER FIBER TEL, INC.
                                    CHURCH & TOWER, INC.
                                    CHURCH & TOWER OF FLORIDA, INC.
                                    CHURCH & TOWER OF TN, INC.
                                    DESIGNED TRAFFIC INSTALLATION CO.
                                    GDSI, INC.
                                    KENNEDY CABLE CONSTRUCTION, INC.
                                    LATLINK CORPORATION
                                    LATLINK ARGENTINA, INC.
                                    MASTEC COMTEC OF CALIFORNIA, INC.
                                    MASTEC COMTEC OF THE CAROLINAS, INC.
                                    MASTEC TECHNOLOGIES, INC.
                                    MASTEC TELEPORT, INC.
                                    R.D. MOODY & ASSOCIATES, INC.
                                    R.D. MOODY AND ASSOCIATES, INC. OF  VIRGINIA
                                    SHANCO CORPORATION
                                    UTILITY LINE MAINTENANCE, INC.



                                    By:___________________________________
                                        Name:
                                        Title:



<PAGE>


                                    The New U.S. Subsidiaries:

                                    AIDCO, INC.
                                    AIDCO SYSTEMS, INC.
                                    E. L. DALTON & COMPANY, INC.
                                    NORTHLAND CONTRACTING, INC.
                                    WILDE CONSTRUCTION, INC.
                                    WILDE OPTICAL SERVICE, INC.
                                    TELE-COMMUNICATIONS CORPORATION  OF VIRGINIA
                                    WILDE ACQUISITION CO., INC.
                                    WILDE HOLDING CO., INC.
                                    WEEKS CONSTRUCTION COMPANY
                                    G.J.S. CONSTRUCTION COMPANY



                                    By:___________________________________
                                        Name:
                                        Title:




<PAGE>



                                    The Banks:

                                    CREDITANSTALT-BANKVEREIN



                                    By:___________________________________
                                        Name:
                                        Title:



                                    By:___________________________________
                                        Name:
                                        Title:

                                    FIRST UNION NATIONAL BANK OF FLORIDA



                                    By:___________________________________
                                        Name:
                                        Title:

                                    THE SUMITOMO BANK, LIMITED



                                    By:___________________________________
                                        Name:
                                        Title:



                                    By:___________________________________
                                        Name:
                                        Title:



<PAGE>



                                    SCOTIABANC INC.



                                    By:___________________________________
                                        Name:
                                        Title:

                                    THE FUJI BANK AND TRUST COMPANY



                                    By:___________________________________
                                        Name:
                                        Title:

                                    COMERICA BANK



                                    By:___________________________________
                                        Name:
                                        Title:

                                    LTCB TRUST COMPANY



                                    By:___________________________________
                                        Name:
                                        Title:

                                    BANKBOSTON, N.A.,
                                      individually and as Agent



                                    By:___________________________________
                                        Name:
                                        Title:


<PAGE>


                                                                 - 9 -

*Corporation's stock to be pledged
*Corporation's stock to be pledged
BOS-BUSN:511686.1
                                   SCHEDULE 1
<TABLE>

I.       U.S. SUBSIDIARIES
<CAPTION>

         A.       BORROWERS

         *Aidco, Inc.

        <S>                                         <C>                                
         Date of Incorporation:  10/25/91            Stock Information:
         State of Incorporation:  California         Total Shares Authorized Common Stock:
         Address:  12675 Colony Court                         100,000
                   Chino, CA  91710                  Par Value:  None
                                                     No. Issued & Outstanding:  3,000
                                                     Owner:  MasTec, Inc.


         *Aidco Systems, Inc.

         Date of Incorporation:  7/26/93             Stock Information:
         State of Incorporation:  California         Total Shares Authorized Common Stock:
         Address:  12675 Colony Court                         100,000
                   Chino, CA  91710                  Par Value:  None
                                                     No. Issued & Outstanding:  1,000
                                                     Owner:  MasTec, Inc.


         *B & D Contractors of Shelby, Inc.

         Date of Incorporation:  6/26/81             Stock Information:
         State of Incorporation:  North Carolina     Total Shares Authorized Common Stock:
         Address:  1528 McCracken Drive                       1,000
                   Shelby, NC  28150                 Par Value:  $100.00
                                                     No. Issued & Outstanding:  100
                                                     Owner:  MasTec, Inc.


         *Burnup & Sims Telcom of Florida, Inc.

         Date of Incorporation:  8/18/94             Stock Information:
         State of Incorporation:  Florida            Total Shares Authorized Common Stock: 
         Address:  7221 Dr. Martin Luther Jr. Blvd E.         1,000
                   Tampa, FL  33519                  Par Value:  $.01
                   (813) 621-0881                    No. Issued & Outstanding:  100
                   (813) 626-3740 - Fax              Owner:  MasTec, Inc.
                   (800) 282-2939


         *Burnup & Sims of Texas, Inc.

         Date of Incorporation:  8/1/58              Stock Information:
         State of Incorporation:  Texas              Total Shares Authorized Common Stock:
         Address:  2716 East Fifth                            10,000
                   Austin, TX  78702                 Par Value:  $100.00
                   (512) 476-6777                    No. Issued & Outstanding:  700
                   (512) 476-6777                    Owner:  MasTec, Inc.
                   (800) 252-5471
         Address:  P.O. Box
                   Austin, Texas  78767


         *Church & Tower, Inc.

         Date of Incorporation:  8/22/90             Stock Information:
         State of Incorporation:  Florida            Total Shares Authorized Common Stock:
         Address:  3155 NW 77th Avenue                        5,000
                   Miami, FL 33122                   Par Value:  $1.00
                                                     No. Issued & Outstanding:  1000
                                                     Owner:  MasTec, Inc.


         *Church & Tower Environmental, Inc.

         Date of Incorporation:  7/16/96             Stock Information:
         State of Incorporation:  Delaware           Total Shares Authorized Common Stock:
         Address:  3155 NW 77th Ave.                          1,000
                   Miami, FL 33122                   Par Value:  $.01
                                                     No. Issued & Outstanding:  100
                                                     Owner:  MasTec, Inc.


         *Church & Tower Fiber Tel, Inc.

         Date of Incorporation:  8/31/94             Stock Information:
         State of Incorporation:  Delaware           Total Shares Authorized Common Stock:
         Address:  4598 Stonegate Industrial Blvd.#B          1,000
                   Stone Mountain Georgia 30078      Par Value:  $.01
                   (404) 508-1666                    No. Issued & Outstanding:  200
                   (404) 508-0106-FAX                Owner:  MasTec, Inc.


         *Church & Tower of Florida, Inc.

         Date of Incorporation:  9/19/68             Stock Information:
         State of Incorporation:  Florida            Total Shares Authorized Common Stock:
         Address:  3155 NW 77th Avenue                        10,000
                    Miami, FL 33122                  Par Value:  $10.00
                                                     No. Issued & Outstanding:  100
                                                     Owner:  MasTec, Inc.


         *Church & Tower of TN, Inc.

         Date of Incorporation:  7/25/79             Stock Information:
         State of Incorporation:  Delaware           Total Shares Authorized Common Stock:
         Address:  3155 NW 77th Avenue                        100
                   Miami, FL 33122                   Par Value:  $1.00
                   (305) 599-1800                    No. Issued & Outstanding:  100
                                                     Owner:  MasTec, Inc.


         *Designed Traffic Installation Co.

         Date of Incorporation:  3/8/65              Stock Information:
         State of Incorporation:  Florida            Total Shares Authorized Common Stock:
         Address:  2801 SW 46th Ave                           10,000
                   Ft. Lauderdale, FL 33314          Par Value:  $10.00
                   (305) 587-1700                    No. Issued & Outstanding:  6,000
                   (305) 587-4070 - Fax            Owner:  MasTec, Inc.


         *E. L. Dalton & Company, Inc.

         Date of Incorporation:  9/18/72             Stock Information:
         State of Incorporation:  Texas              Total Shares Authorized Common Stock:
         Address:  8700 Stemmons Fwy., Suite 125              100,000
                   Dallas, TX  75247                 Par Value:  $1.00
                                                     No. Issued & Outstanding:  2,000
                                                     Owner:  MasTec, Inc.


         *GDSI, Inc.

         Date of Incorporation:  12/24/80            Stock Information:
         State of Incorporation:  Delaware           Total Shares Authorized Common Stock:
         Address:  5555 Oakbrook Way Ste. 620                 100
                   Norcross, GA  30093-22770         Par Value:  $1.00
                   (770) 662-8310                    No. Issued & Outstanding:  100
                   (770) 242-7680 - Fax              Owner:  MasTec, Inc.


         *G.J.S. Construction Company
         (d/b/a Somerville Construction Co.)

         Date of Incorporation:  6/22/92             Stock Information:
         State of Incorporation:  Arizona            Total Shares Authorized Common Stock:
         Address:  3806 S. 16th Street                                 3,000,000
                     Phoenix, AZ  85040              Par Value:  $1.00
                                                     No. Issued & Outstanding:  175,100
                                                     Owner:  MasTec, Inc.


         *Harrison-Wright Co., Inc.
         (formerly known as BURNUP & SIMS OF THE CAROLINAS, INC.)

         Date of Incorporation:  2/18/71             Stock Information:
         State of Incorporation:  Delaware           Total Shares Authorized Common Stock:
         Address:  3133 Cedar Park Rd.                        10,000
                   Greensboro, NC 27405              Par Value:  $1.00
                                                     No. Issued & Outstanding:  200
                                                     Owner:  MasTec, Inc.


         *Kennedy Cable Construction, Inc.

         Date of Incorporation:  1/24/97             Stock Information:
         State of Incorporation:  Delaware           Total Shares Authorized Common Stock:
         Address:  Highway 280 West                           1,000
                     Reidsville, GA 30453            Par Value:  $.01
                     (912) 557-4751                  No. Issued & Outstanding:  100
                     (912) 557-6545                  Owner:  MasTec, Inc.


         *Latlink Corporation

         Date of Incorporation:  11/16/95            Stock Information:
         State of Incorporation:  Delaware           Total Shares Authorized Common Stock:
         Address:  3155 NW 77th Ave.                          2,500
                   Miami, FL 33122                   Par Value:  $.01
                                                     No. Issued & Outstanding:  100
                                                     Owner:  MasTec, Inc.


         *Latlink Argentina, Inc.
         (originally MasTec Equipment, Inc.  Name changes: MasTec Offshore, Inc., Latlink, Inc., Latlink Argentina, Inc.)

         Date of Incorporation:  7/1/94              Stock Information:
         State of Incorporation:  Delaware           Total Shares Authorized Common Stock:
         Address:  3155 NW 77th Ave.                          2,500
                   Miami, FL 33122                   Par Value:  $.01
                                                     No. Issued & Outstanding:  100
                                                     Owner:  Latlink Corporation


         *MasTec Comtec of California, Inc.

         Date of Incorporation:  7/25/79             Stock Information:
         State of Incorporation:  Delaware           Total Shares Authorized Common Stock:
         Address:  15119 Arrow Highway                        100
                   Irwindale, CA 91706               Par Value:  $1.00
                   (818) 877-2700                    No. Issued & Outstanding:  100
                   (818) 960-4166 - FAX              Owner:  MasTec, Inc.


         *MasTec Comtec of the Carolinas, Inc.

         Date of Incorporation:  9/24/79             Stock Information:
         State of Incorporation:  Delaware           Total Shares Authorized Common Stock:
         Address:  1715 Orr Industrial Court                  10,000
                   Charlotte, NC 28213               Par Value:  $.01
                   (770) 598-9229                    No. Issued & Outstanding:  2100
                   (770) 596-8254                    Owner:  MasTec, Inc.


         *MasTec Technologies, Inc.

         Date of Incorporation:  7/31/95             Stock Information:
         State of Incorporation:  Delaware           Total Shares Authorized Common Stock:
         Address:  8600 N.W. 36th Street                      1,000
                     Miami, FL 33166                 Par Value:  $.01
                                                     No. Issued & Outstanding:  100
                                                     Owner:  MasTec, Inc.


         *MasTec Teleport, Inc.

         Date of Incorporation:  2/13/95             Stock Information:
         State of Incorporation:  Florida            Total Shares Authorized Common Stock:
         Address:  3155 NW 77th Avenue                        5,000
                   Miami, FL  33122                  Par Value:  $1.00
                   (305) 599-1800                    No. Issued & Outstanding:  1,000
                                                     Owner:  MasTec, Inc. -- 750 shares


         *Northland Contracting, Inc.

         Date of Incorporation:  6/4/79              Stock Information:
         State of Incorporation:  Minnesota          Total Shares Authorized Common Stock:
         Address:  Highway #2 East                            2,500
                   Shevlin, MN  56676                Par Value:  $.01
                                                     No. Issued & Outstanding:  100
                                                     Owner:  Wilde Acquisition Co., Inc.

         *R.D. Moody & Associates, Inc.

         Date of Incorporation:  2/18/88             Stock Information:
         State of Incorporation:  Florida            Total Shares Authorized Common Stock:
         Address:  5380 Capital Circle, NW                    5,000
                   Tallahassee, FL 32303             Par Value:  $1.00
                                                     No. Issued & Outstanding:  500
                                                     Owner:  MasTec, Inc.


         *R.D. Moody and Associates, Inc. of Virginia

         Date of Incorporation:  9/20/94             Stock Information:
         State of Incorporation:  Virginia           Total Shares Authorized Common Stock:
         Address:  5380 Capital Circle, NW                    5,000
                   Tallahassee, FL 32303             Par Value:  $20.00
                                                     No. Issued & Outstanding:  5000
                                                     Owner:  MasTec, Inc.


         *Shanco Corporation

         Date of Incorporation:  2/4/97              Stock Information:
         State of Incorporation:  Florida            Total Shares Authorized Common Stock:
         Address:  14170 Jetport Loop                         1,000
                   Fort Myers FL 33913               Par Value:  $.01
                   (941) 768-5001                    Issued & Outstanding:  300
                   (941) 768-0035 (FAX)              Owner:  MasTec, Inc.


         *Tele-Communications Corporation of Virginia

         Date of Incorporation:  10/15/82            Stock Information:
         State of Incorporation:  Virginia           Total Shares Authorized Common Stock:
         Address:  1868 Mount Pleasant Road                   20,000
                   Chesapeake, VA  23322             Par Value:  $1.00
                                                     No. Issued & Outstanding:  18,950
                                                     Owner:  MasTec, Inc.


         *Utility Line Maintenance

         Date of Incorporation:  8/17/88             Stock Information:
         State of Incorporation:  Georgia            Total Shares Authorized Common Stock:
         Address:  1696 N. Georgia Hwy. 16                    1,000,000
                   Whitesburg, GA 30185              Par Value:  $1.00
                   (770)832-1604                     No. Issued & Outstanding:  500
                   (770) 832-9738                    Owner:  MasTec, Inc.


         *Utility Precast,  Inc., a Delaware corporation  (formerly known as H-W
         Acquisition III Co., Inc.)

         Date of Incorporation:  10/17/96            Stock Information:
         State of Incorporation:  Delaware           Total Shares Authorized Common Stock:
         Address:  3133 Cedar Park Road                       1,000
                   Greensboro, NC  27405             Par Value:  $.01
                   (910) 697-2930                    No. Issued & Outstanding:  100
                   (910) 697-7895 (fax)              Owner:  Harrison-Wright Co., Inc.


         *Weeks Construction Company

         Date of Incorporation:  4/27/79             Stock Information:
         State of Incorporation:  North Carolina     Total Shares Authorized Common Stock:
         Address:  1602 East Dixie Drive                      100,000
                   Asheboro, NC  27204               Par Value:  $1.00
                                                     No. Issued & Outstanding:  439
                                                     Owner:  MasTec, Inc.




<PAGE>


         *Wilde Acquisition Co., Inc.

         Date of Incorporation:  7/31/97             Stock Information:
         State of Incorporation:  Delaware           Total Shares Authorized Common Stock:
         Address:  3155 NW 77th Avenue                        1,000
                   Miami, FL  33122                  Par Value:  $.01
                                                     No. Issued & Outstanding:  100
                                                     Owner:  Wilde Holding Co., Inc.


         *Wilde Holding Co., Inc.

         Date of Incorporation:  5/30/95             Stock Information:
         State of Incorporation:  Delaware           Total Shares Authorized Common Stock:
         Address:  3155 NW 77th Avenue                        1,000
                   Miami, FL  33122                  Par Value:  $.01
                                                     No. Issued & Outstanding:  100
                                                     Owner:  MasTec, Inc.


         *Wilde Construction, Inc.

         Date of Incorporation:  9/26/74             Stock Information:
         State of Incorporation:  Minnesota          Total Shares Authorized Common Stock:
         Address:  Highway #2 East                            750
                   Shevlin, MN  56676                Par Value:  $.01
                                                     No. Issued & Outstanding:  60
                                                     Owner:  MasTec, Inc.


         *Wilde Optical Service, Inc.

         Date of Incorporation:  2/9/87              Stock Information:
         State of Incorporation:  Minnesota          Total Shares Authorized Common Stock:
         Address:  Highway #2 East                            10,000
                   Shevlin, MN  56676                Par Value:  $.01
                                                     No. Issued & Outstanding:  1,000
                                                     Owner:  MasTec, Inc.


         B.       NON-BORROWERS

                  1.       EXCLUDED SUBSIDIARIES

                  Burnup & Sims Network Designs, Inc.
                  Floyd Theatres, Inc.
                  Tallahassee Theatres, Inc.
                  Haven Outdoor Drive-Theatre, Inc.
                  Burnup & Sims Enterprises, Inc.
                  Burnup & Sims of Mississippi, Inc.
                  Burnup & Sims Communications Services of Florida, Inc.
                  Cal Technical Services, Inc.
                  Capscan Cable Company, Inc.
                  DTI, Inc.
                  Excom Realty, Inc.
                  Gasco, Inc.
                  GCC Corp.
                  L.P. & H.
                  MasTec Angola, Inc.
                  MasTec - Haiti, Inc.
                  MasTec - Puerto Rico, Inc.
                  MasTec Wireless, Inc.
                  Pantel International, Inc. - Hungary
                  Telink, Inc.
                  9001 Joint Venture
                  H-W Acquisition II, Inc.
                  MasTec Telepub, Inc.


                  2.       U.S. MEMBERS OF THE MASTEC INTERNATIONAL GROUP

                  *MasTec International, Inc.

                  Date of Incorporation:  4/22/92    Stock Information:
                  State of Incorporation:  Delaware  Total Shares Authorized Common Stock:
                  Address:  3155 NW 77th Avenue               1,000
                            Miami, FL 33122          Par Value:  $.01
                                                     No. Issued & Outstanding:  1,000
                                                     Owner:  MasTec, Inc.


                  *MasTec Latin America, Inc.

                  Date of Incorporation:  2/13/97    Stock Information:
                  State of Incorporation:  Delaware  Total Shares Authorized Common Stock:
                  Address:  3155 NW 77th Avenue               1,000
                            Miami, FL  33122         Par Value:  $.01
                            (305) 599-1800           No. Issued & Outstanding:  100
                                                     Owner:  MasTec International, Inc.


II.      SINTEL GROUP (NON-BORROWERS)

         *Sistemas e Instalaciones de Telecomunicaciones, S.A.

         Date of Incorporation:  2/8/50              Stock Information:
         Country of Incorporation:  Spain            Total Shares Authorized Common Stock:
         Address:  C/.del Arte.21 28033                       6,100,000
                   Madrid, Spain                     Par Value:  1,000 Pesetas
                                                     No. Issued & Outstanding:  6,100,000
                                                     Owner:  MasTec International, Inc.


         Sintel - Peru, S.A.
         Sintel - Venezuela, S.A.
         Sintelar, S.A.
         Sietel, S.A.

</TABLE>


<PAGE>


                                                                  -3-


BOS-BUSN:511686.1
                                                                       EXHIBIT F

                                     FORM OF
                        JOINDER AGREEMENT AND AFFIRMATION


         This Joinder  Agreement and Affirmation  (this "Joinder  Agreement") is
executed and  delivered by [Name of Newly  Acquired  Subsidiary]  (the "New U.S.
Subsidiary")  pursuant to ss.4.13 of the Revolving  Credit Agreement dated as of
June 9, 1997,  as may be amended  from time to time,  (the  "Credit  Agreement")
among MasTec,  Inc., a Delaware  corporation  (the "Parent"),  its  Subsidiaries
(other than Excluded Subsidiaries and members of the MasTec International Group)
listed  on  Schedule  1 to the  Credit  Agreement  (together  with  the  Parent,
collectively the "Borrowers") BankBoston, N.A., Creditanstalt-Bankverein,  First
Union National Bank of Florida, The Sumitomo Bank, Limited, Scotiabanc Inc., The
Fuji Bank and Trust Company, Comerica Bank and LTCB Trust Company (collectively,
the "Banks") and BankBoston,  N.A. as agent (the "Agent") for the Banks, and any
other  financial  institutions  which become parties to the Credit  Agreement in
accordance with ss.ss.14 and 17 of the Credit  Agreement.  All capitalized terms
used in this Joinder  Agreement and not otherwise  defined herein shall have the
same meanings herein as in the Credit Agreement.

         The New U.S.  Subsidiary  hereby agrees to become a Borrower in respect
of the  Obligations  as set forth in the Credit  Agreement and, by executing and
delivering  this Joinder  Agreement,  does hereby join and become a party to the
Credit Agreement as a Borrower,  assuming all of the obligations and liabilities
of a Borrower thereunder.  The New U.S. Subsidiary agrees to comply with, and be
bound  by,  all of the terms  and  conditions  of the  Credit  Agreement  in all
respects as an original Borrower thereunder,  as if the New U.S. Subsidiary were
an original  signatory  thereto,  including  without  limitation,  assuming  all
obligations and liabilities  arising or incurred under the Credit  Agreement and
the Notes on and after the Closing Date.

         To the extent that the New U.S.  Subsidiary holds any stock of any U.S.
Subsidiary  (other  than the  stock  of an  Excluded  Subsidiary),  the New U.S.
Subsidiary  hereby  agrees  to pledge  all such  stock  and,  by  executing  and
delivering  this Joinder  Agreement,  does hereby join and become a party to the
U.S.  Stock Pledge  Agreement  dated as of June 9, 1997,  as may be amended from
time to time, (the "U.S. Stock Pledge") among MasTec, Inc., Burnup & Sims of the
Carolinas, Inc., Latlink Corporation, MasTec International, Inc. and BankBoston,
N.A. as Agent for the Banks, as an original Pledgor thereunder,  assuming all of
the obligations and liabilities of a Pledgor thereunder. The New U.S. Subsidiary
agrees to comply with,  and be bound by, all of the terms and  conditions of the
U.S. Stock Pledge in all respects as an original Pledgor  thereunder,  as if the
New U.S.  Subsidiary  were an  original  signatory  thereto,  including  without
limitation,  assuming all obligations and liabilities  arising or incurred under
the U.S. Stock Pledge on and after the Closing Date.

         The New U.S.  Subsidiary  hereby  consents to and agrees to be bound by
the provisions of ss.ss.4.1, 6 and 7 of the U.S. Stock Pledge, and hereby agrees
to cooperate fully and in good faith with the Agent and the Pledgors in carrying
out such  provisions  and, by executing and delivering  this Joinder  Agreement,
does hereby join the U.S. Stock Pledge to the extent stated.

         Without  limiting the above, the New U.S.  Subsidiary  hereby expressly
consents to the terms and  conditions  of ss.22 (Waiver of Jury Trial) and ss.23
(Governing Law;  Submission to Jurisdiction) of the Credit Agreement,  and ss.18
(Waiver of Jury Trial) and ss.17 (Governing Law; Consent to Jurisdiction) of the
Credit Agreement.

         The undersigned  agrees that this Joinder  Agreement shall be deemed to
be, and is hereby made a part of, the Credit  Agreement as if set forth  therein
in full.


<PAGE>



         IN WITNESS WHEREOF,  the undersigned has caused this Joinder  Agreement
to be duly executed on this ___ day of _________ 199__.


                                       [NEW U.S. SUBSIDIARY]


                                       By:      _________________________
                                                Name:
                                                Title:

                                       Address for Notices:
                                       [Address]


Except as  expressly  modified  hereby,  the  Credit  Agreement,  the other Loan
Documents and all  documents,  instruments  and agreements  related  thereto are
hereby  ratified and confirmed in all respects and shall  continue in full force
and effect.  The  Borrowers  hereby  affirm their  Obligations  under the Credit
Agreement and agree that they are jointly and severally liable with the New U.S.
Subsidiary with respect to the Total Commitment.

Agreed to and Consented by:

 MASTEC, INC.

By:___________________________________
     Name:
     Title:

[SUBSIDIARY]
[SUBSIDIARY]
[SUBSIDIARY]
[SUBSIDIARY]
[SUBSIDIARY]
[SUBSIDIARY]

By:___________________________________
     Name:
     Title:


<TABLE> <S> <C>


<ARTICLE>                     5
<LEGEND>
     (Replace this text with the legend)
</LEGEND>
<CIK>                         0000015615
<NAME>                        MasTec, Inc.
<MULTIPLIER>                                   1,000
<CURRENCY>                                     US
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                              DEC-31-1998
<PERIOD-START>                                 JAN-1-1998
<PERIOD-END>                                   JUN-30-1998
<EXCHANGE-RATE>                                1.00
<CASH>                                         39,496
<SECURITIES>                                   0
<RECEIVABLES>                                  372,502
<ALLOWANCES>                                   0
<INVENTORY>                                    13,667
<CURRENT-ASSETS>                               478,988
<PP&E>                                         127,710
<DEPRECIATION>                                 0
<TOTAL-ASSETS>                                 821,622
<CURRENT-LIABILITIES>                          298,562
<BONDS>                                        200,000
                          0
                                    0
<COMMON>                                       2,759
<OTHER-SE>                                     213,042
<TOTAL-LIABILITY-AND-EQUITY>                   821,622
<SALES>                                        432,201
<TOTAL-REVENUES>                               432,201
<CGS>                                          339,194
<TOTAL-COSTS>                                  425,789
<OTHER-EXPENSES>                               0
<LOSS-PROVISION>                               0
<INTEREST-EXPENSE>                             12,128
<INCOME-PRETAX>                                (913)
<INCOME-TAX>                                   803
<INCOME-CONTINUING>                            (2,706)
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                                   (2,706)
<EPS-PRIMARY>                                  (.10)
<EPS-DILUTED>                                  (.10)
        



</TABLE>


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