-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0000015615-04-000021.txt : 20040510
<SEC-HEADER>0000015615-04-000021.hdr.sgml : 20040510
<ACCEPTANCE-DATETIME>20040510172351
ACCESSION NUMBER:		0000015615-04-000021
CONFORMED SUBMISSION TYPE:	NT 10-Q
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040331
FILED AS OF DATE:		20040510
EFFECTIVENESS DATE:		20040510

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MASTEC INC
		CENTRAL INDEX KEY:			0000015615
		STANDARD INDUSTRIAL CLASSIFICATION:	WATER, SEWER, PIPELINE, COMM AND POWER LINE CONSTRUCTION [1623]
		IRS NUMBER:				650829355
		STATE OF INCORPORATION:			FL
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		NT 10-Q
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08106
		FILM NUMBER:		04794263

	BUSINESS ADDRESS:	
		STREET 1:		800 DOUGLAS ROAD
		STREET 2:		12TH FLOOR
		CITY:			CORAL GABLES
		STATE:			FL
		ZIP:			33134
		BUSINESS PHONE:		3055991800

	MAIL ADDRESS:	
		STREET 1:		800 DOUGLAS ROAD
		STREET 2:		12TH FLOOR
		CITY:			CORAL GABLES
		STATE:			FL
		ZIP:			33134

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BURNUP & SIMS INC
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>NT 10-Q
<SEQUENCE>1
<FILENAME>form12b-25.htm
<DESCRIPTION>NOTIFICATION OF LATE FILING 10-Q Q1-2004
<TEXT>
<HTML>
<HEAD>
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     <!-- Project Name:   form12b-25.eep                                                   -->
     <!-- Firm Name:      MasTec, Inc.                                                     -->
     <TITLE>Form 12b-25, period ending March 31, 2004</TITLE>
</HEAD>
<BODY>

<!-- MARKER FORMAT-SHEET="Head Major Center Bold" FSL="Default" -->
<A NAME=A001></A>
<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=4>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION<BR> WASHINGTON, D.C. 20549  </FONT></H1>

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<A NAME=A004></A>
<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=3>FORM 12b-25  </FONT></H1>

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<A NAME=A005></A>
<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Commission File Number
001-08106 </FONT></P>
<BR>
<!-- MARKER FORMAT-SHEET="Head Major Center Bold-TNR" FSL="Project" -->
<A NAME=A006></A>
<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2><U>NOTIFICATION OF LATE
FILING</U>  </FONT></H1>

<!-- MARKER FORMAT-SHEET="Head Left-TNR" FSL="Default" -->
<A NAME=A007></A>
<P ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(Check One): </FONT></P>

<TABLE CELLPADDING=0 CELLSPACING=0 BORDER=0 WIDTH=600>
<TR VALIGN=Bottom>
     <TD WIDTH=26% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&#143;&nbsp;&nbsp;Form 10-K</FONT></TD>
     <TD WIDTH=1% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
     <TD WIDTH=5% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&#143;</FONT></TD>
     <TD WIDTH=18% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Form 11-K</FONT></TD>
     <TD WIDTH=0% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
     <TD WIDTH=5% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&#143;</FONT></TD>
     <TD WIDTH=18% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Form 20-F</FONT></TD>
     <TD WIDTH=1% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
     <TD WIDTH=5% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2></FONT></TD>
     <TD WIDTH=18% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>|X|&nbsp;&nbsp;Form 10-Q</FONT></TD>
     <TD WIDTH=1% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
     <TD WIDTH=2% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD></TR>
</TABLE>



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<A NAME=A008></A>
<P ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;For
Period Ended:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<U>March 31, 2004</U></FONT></P>


<TABLE CELLPADDING=0 CELLSPACING=0 BORDER=0 WIDTH=600>
<TR VALIGN=Bottom>
     <TD WIDTH=10% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&#143;</FONT></TD>
     <TD WIDTH=20% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Transition Report on Form 10-K</FONT></TD>
     <TD WIDTH=10% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&#143;</FONT></TD>
     <TD WIDTH=20% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Transition Report on Form 10-Q</FONT></TD></TR>

<TR VALIGN=Bottom>
      <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
      <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
      <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
      <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD></TR>
<TR VALIGN=Bottom>
     <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&#143;</FONT></TD>
<TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Transition Report on Form 20-F</FONT></TD>
     <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&#143;</FONT></TD>
<TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Transition Report on Form N-SAR</FONT></TD></TR>

<TR VALIGN=Bottom>
      <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
      <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
      <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
      <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD></TR>
<TR VALIGN=Bottom>
     <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&#143;</FONT></TD>
        <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Transition Report on Form 11-K</FONT></TD>
     <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
        <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD></TR>

</TABLE>



<!-- MARKER FORMAT-SHEET="Head Sub 1 Left-TNR" FSL="Project" -->
<A NAME=A010></A>
<P ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;For
Transition Period Ended:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;_______________</FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush Lv 0-TNR" FSL="Project" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Nothing in this Form shall be
construed to imply that the Commission has verified any information contained herein. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush Lv 0-TNR" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>If the notification relates to a
portion of the filing checked above, identify the Item(s) to which the notification
relates: <BR>______________________________________________________________________________________</FONT></P>


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<HR SIZE=5 COLOR=GRAY NOSHADE>




<!-- MARKER FORMAT-SHEET="Head Major Left Bold-TNR" FSL="Project" -->
<A NAME=A011></A>
<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2><B>Part I &#151; Registrant
Information</B> </FONT></H1>


<!-- MARKER FORMAT-SHEET="Head Left-TNR" FSL="Project" -->
<A NAME=A012></A>
<P ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Full Name of
Registrant:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<U><B>MasTec, Inc.</B></U> </FONT></P>

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<A NAME=A013></A>
<P ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Former Name if
Applicable:&nbsp;______________ </FONT></P>

<!-- MARKER FORMAT-SHEET="Head Left-TNR" FSL="Default" -->
<A NAME=A014></A>
<P ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Address of Principal
Executive Office (Street and Number):&nbsp;&nbsp;&nbsp; <B><U>800 S. Douglas Road, 12th Floor</U> </B></FONT></P>

<!-- MARKER FORMAT-SHEET="Head Left-TNR" FSL="Project" -->
<P ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>City, State and Zip Code:
   <B><U>Coral Gables, Florida 33134</U></B> </FONT></P>

<!-- MARKER FORMAT-SHEET="Head Major Left Bold-TNR" FSL="Project" -->
<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Part II &#151;  Rule
12b-25(b) and (c) </FONT></H1>


<!-- MARKER FORMAT-SHEET="Para Flush Lv 0-TNR" FSL="Project" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>If the subject report could not be
filed without unreasonable effort or expense and the registrant seeks relief pursuant to
Rule 12b-25(b), the following should be completed. (Check box if appropriate.)  </FONT></P>


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               <TABLE WIDTH=100% CELLPADDING=0 CELLSPACING=0 BORDER=0>
                    <TR VALIGN=TOP>
                    <TD WIDTH="10%" ALIGN="Center"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>|X|</FONT></TD>
                    <TD WIDTH=5%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(a) </FONT></TD>
                    <TD WIDTH=85%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>
                    The reasons described in reasonable detail in Part III of this form could not be
                    eliminated without unreasonable effort or expense; </FONT></TD>
                    </TR>
                    </TABLE>
                    <BR>

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               <TABLE WIDTH=100% CELLPADDING=0 CELLSPACING=0 BORDER=0>
                    <TR VALIGN=TOP>
                    <TD WIDTH="10%" ALIGN="Center"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>|X|</FONT></TD>
                    <TD WIDTH=5%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(b) </FONT></TD>
                    <TD WIDTH=85%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>
                    The subject annual report, semi-annual report, transition report on
                    Form&nbsp;10-K, 10-KSB, 20-F, 11-K or Form N-SAR, or portion thereof will be
                    filed on or before the 15th calendar day following the prescribed due date; or
                    the subject quarterly report or transition report on Form 10-Q or portion
                    thereof will be filed on or before the fifth calendar day following the
                    prescribed due date; and </FONT></TD>
                    </TR>
                    </TABLE>
                    <BR>

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               <TABLE WIDTH=100% CELLPADDING=0 CELLSPACING=0 BORDER=0>
                    <TR VALIGN=TOP>
                    <TD WIDTH="10%" ALIGN="Center"><FONT FACE="Times New Roman, Times, Serif" SIZE=4>&#143;</FONT></TD>
                    <TD WIDTH=5%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(c) </FONT></TD>
                    <TD WIDTH=85%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>
                    The accountant&#146;s statement or other exhibit required by Rule 12b-25(c) has
                    been attached if applicable. </FONT></TD>
                    </TR>
                    </TABLE>
                    <BR>


<!-- MARKER FORMAT-SHEET="Head Major Left Bold-TNR" FSL="Project" -->
<A NAME=A015></A>
<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Part III &#151; Narrative  </FONT></H1>


<!-- MARKER FORMAT-SHEET="Para Flush Lv 0-TNR" FSL="Project" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>State below in reasonable detail the
reasons why the Form 10-K, 10-KSB, 11-K, 20-F, 10-Q, 10-QSB, N-SAR or portion thereof
could not be filed within the prescribed time period. </FONT></P>

<!-- MARKER FORMAT-SHEET="Head Minor Center-TNR" FSL="Project" -->
<A NAME=A016></A>
<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2><U>See Attachment hereto</U> </FONT></P>

<!-- MARKER FORMAT-SHEET="Head Major Left Bold-TNR" FSL="Project" -->
<A NAME=A017></A>
<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Part IV &#151; Other
Information  </FONT></H1>



<!-- MARKER FORMAT-SHEET="Para (List) Flush Lv 0- TNR"  -->
     <P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(1)&nbsp;&nbsp;&nbsp;&nbsp;
          Name and telephone number of person to contact in regard to this notification: </FONT></P>

<TABLE CELLPADDING="0" CELLSPACING="0" BORDER="0" WIDTH="600" ALIGN="Center">
<TR VALIGN=Bottom>
     <TD WIDTH="35%" ALIGN="Center"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;<B>Austin Shanfelter,</B></FONT></TD>
     <TD WIDTH=5% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
     <TD WIDTH=15% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
     <TD WIDTH=9% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
     <TD WIDTH=34% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
     <TD WIDTH=2% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD></TR>
<TR VALIGN=Bottom>
     <TD ALIGN="Center"><FONT FACE="Times New Roman, Times, Serif" SIZE=2><B><U>Chief Executive Officer</U></B></FONT></TD>
     <TD ALIGN="Center"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
     <TD ALIGN="Center"><FONT FACE="Times New Roman, Times, Serif" SIZE=2><B><U>(305)</U></B></FONT></TD>
     <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
     <TD ALIGN="Center"><FONT FACE="Times New Roman, Times, Serif" SIZE=2><B><U>599-1800</U></B></FONT></TD>
     <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD></TR>

<TR VALIGN=Bottom>
     <TD ALIGN="Center"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(Name)</FONT></TD>
<TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
     <TD ALIGN="Center"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(Area Code)</FONT></TD>
        <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
     <TD ALIGN="Center"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(Telephone Number)</FONT></TD>
<TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD></TR>
</TABLE>




<!-- MARKER FORMAT-SHEET="Para (List) Flush Lv 0- TNR" FSL="Project" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(2)&nbsp;&nbsp;&nbsp;&nbsp;Have all
other periodic reports required under Section 13 or 15(d) of the           Securities
Exchange Act of 1934 or Section 30 of the Investment Company Act of           1940 during
the preceding 12 months or for such shorter period that the           registrant was
required to file such report(s) been filed? If the answer is no,           identify the
report(s): MasTec has not yet filed its Form 10-K for the year ended December 31, 2003. </FONT></P>

<TABLE CELLPADDING="0" CELLSPACING="0" BORDER="0" WIDTH="600" ALIGN="Center">
<TR VALIGN=Bottom>
     <TD WIDTH="20%" ALIGN="Center"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&#143;</FONT></TD>
     <TD WIDTH=30% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Yes</FONT></TD>
     <TD WIDTH="20%" ALIGN="Center"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>|X|</FONT></TD>
     <TD WIDTH=30% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>No</FONT></TD></TR>
</TABLE>


<!-- MARKER FORMAT-SHEET="Para (List) Flush Lv 0- TNR" FSL="Project" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(3)&nbsp;&nbsp;&nbsp;&nbsp;Is it
anticipated that any significant change in results of operations from the
          corresponding period for the last fiscal year will be reflected by the earnings
          statements to be included in the subject report or portion thereof?  </FONT></P>

<TABLE CELLPADDING="0" CELLSPACING="0" BORDER="0" WIDTH="600" ALIGN="Center">
<TR VALIGN=Bottom>
     <TD WIDTH="20%" ALIGN="Center"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>|X|</FONT></TD>
     <TD WIDTH=30% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Yes</FONT></TD>
     <TD WIDTH="20%" ALIGN="Center"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&#143;</FONT></TD>
     <TD WIDTH=30% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>No</FONT></TD></TR>
</TABLE>


<!-- MARKER FORMAT-SHEET="Para (List) Flush Lv 0- TNR" FSL="Project" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If so:
attach an explanation of the anticipated change, both narratively and quantitatively,
and, if appropriate, state the reasons why a reasonable estimate of the results cannot be
made.  </FONT></P>


<!-- MARKER FORMAT-SHEET="Head Minor Center-TNR" FSL="Project" -->
<A NAME=A018></A>
<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2><U>See Attachment hereto.</U> </FONT></P>
<BR>
<BR>

<!-- MARKER FORMAT-SHEET="Head Minor Center-TNR" FSL="Project" -->
<A NAME=A019></A>
<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2><U><B>MasTec, Inc.</B></U><BR>(Name of Registrant as
specified in charter) </FONT></P>


<!-- MARKER FORMAT-SHEET="Para Flush Lv 0-TNR" FSL="Project" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Has caused this notification to be
signed on its behalf by the undersigned thereunto duly authorized.  </FONT></P>


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<TABLE WIDTH=100% CELLSPACING=0 CELLPADDING=0 BORDER=0>
<TR VALIGN=TOP>
<TD WIDTH=40%><FONT FACE="Times New Roman, Times, Serif" SIZE=2><BR><BR><BR>Date:  May 10, 2004</FONT></TD>
<TD WIDTH=10%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH=50%><FONT FACE="Times New Roman, Times, Serif" SIZE=2><B>&nbsp;</B><BR><BR>
<BR>By: /s/ Austin Shanfelter<BR>&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;<BR>
Name:&nbsp;&nbsp;<B>Austin Shanfelter</B><BR>Title:&nbsp;&nbsp;<B>Chief Executive Officer</B></FONT></TD>
</TR>
</TABLE>
<BR>

<!-- MARKER PAGE="sheet: 2; page: 2" -->
<HR SIZE=5 COLOR=GRAY NOSHADE>


<!-- MARKER FORMAT-SHEET="Head Right-TNR" FSL="Project" -->
<P ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>ATTACHMENT TO FORM
12b-25 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></P>

<!-- MARKER FORMAT-SHEET="Head Minor Center Bold-TNR" FSL="Project" -->
<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Form 10-Q for the quarterly period ended March 31, 2004 </FONT></H1>


<!-- MARKER FORMAT-SHEET="Head Major Left Bold-TNR" FSL="Project" -->
<A NAME=A021></A>
<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>PART III &#151; NARRATIVE  </FONT></H1>

<!-- MARKER FORMAT-SHEET="Para Indent Lv 0-TNR" FSL="Project" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MasTec,
Inc. (&#147;MasTec&#148;) is unable to file its Form 10-Q for the quarterly period ended March 31, 2004
within the prescribed time period without unreasonable effort or
expense. The reasons causing MasTec&#146;s inability to file timely are beyond its control
and could not be eliminated by the company without unreasonable effort or expense. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Indent Lv 0-TNR" FSL="Project" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MasTec
is unable to timely file its quarterly report on form 10-Q for the period ended March 31, 2004, without unreasonable effort and
expense because MasTec is still in the process of providing the support necessary for its
auditors to conclude their work in connection with the audited financial statements for
the year ended December 31, 2003 and until such audit is completed, the Form 10-Q for the quarter ended March 31, 2004 cannot be completed. </FONT></P>

<!-- MARKER FORMAT-SHEET="Head Major Left Bold-TNR" FSL="Project" -->
<A NAME=A022></A>
<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>PART IV &#150; NARRATIVE  </FONT></H1>


<!-- MARKER FORMAT-SHEET="Para Indent Lv 0-TNR" FSL="Project" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MasTec
expects to report a significant change in its results of operations for the quarter ended March 31, 2004 as compared to the
comparable period in the prior year.  Based on information currently available to us, we believe that we will report a net loss
for the quarter ended March 31, 2004 significantly greater than the net loss of approximately $1.6 million reported for the
quarter ended March 31, 2003.
</FONT></P>

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