MasTec Announces Offerings to Refinance Convertible Notes and Sell Common Stock for...

MasTec Announces Offerings to Refinance Convertible Notes and Sell Common
Stock for Prior Acquisition Related Shareholders

CORAL GABLES, Fla., June 1 /PRNewswire-FirstCall/ -- MasTec, Inc. (NYSE: MTZ)
today announced an underwritten public offering of convertible notes and an
underwritten public secondary offering of common stock by certain selling
shareholders.

MasTec will offer approximately $100,000,000 aggregate principal amount of
convertible senior notes in a registered public offering. In addition, MasTec
has granted to the underwriters an option to purchase up to an additional
$15,000,000 aggregate principal amount of the convertible notes. The
convertible notes will be convertible, under certain circumstances, into
shares of MasTec common stock.

The convertible notes will be MasTec's senior unsecured obligations and will
rank equally with any existing and future unsecured senior debt, and senior to
any existing and future subordinated debt. The convertible notes will be
guaranteed by the MasTec subsidiaries that guarantee MasTec's 7.625% senior
notes due 2017.

Concurrently, certain shareholders will offer 4 million shares of MasTec
common stock in an underwritten registered public offering. All of the shares
are being offered by Jon Wanzek, founder and CEO of Wanzek Construction, Inc.
("Wanzek Construction"), and his affiliates. Mr. Wanzek and his affiliates
received 7.5 million MasTec shares in conjunction with MasTec's 2008
acquisition of Wanzek Construction. Assuming a successful completion of the
common stock offering, Mr. Wanzek and his affiliate group will remain one of
MasTec's largest shareholders.

MasTec intends to use the proceeds from the convertible notes offering to
refinance the existing $55 million 8% convertible notes issued in conjunction
with MasTec's 2008 acquisition of Wanzek Construction, for working capital,
possible acquisitions of assets and businesses, and for general corporate
purposes. MasTec will not receive any proceeds from the sale of the shares of
common stock by the selling shareholders.

The closing of the convertible notes offering and the common stock offering
will not be contingent on each other.

The common shares and convertible notes purchased by the underwriters are
expected to be offered for resale from time to time in negotiated transactions
or otherwise, at market prices prevailing at the time of sale, at prices
related to such prevailing market prices, or otherwise.

This press release shall not constitute an offer to sell or the solicitation
of an offer to buy the common stock or convertible notes, nor shall there be
any sale of the common stock or convertible notes in any state or jurisdiction
in which such an offer, solicitation or sale would be unlawful prior to the
registration or qualification under the securities laws of any such state or
jurisdiction. A registration statement relating to these securities has been
filed with the Securities and Exchange Commission and is effective. A written
prospectus for this offering meeting the requirements of Section 10 of the
Securities Act of 1933 (other than a free writing prospectus as defined in
Securities Act Rule 405) may be obtained from the offices of Morgan Stanley at
180 Varick Street, Second Floor, New York, New York 10014, Attention:
Prospectus Department or by email at prospectus@morganstanley.com.

MasTec is a leading specialty contractor operating mainly throughout the
United States across a range of industries. The Company's core activities are
the building, installation, maintenance and upgrade of communication and
utility infrastructure systems.

Forward Looking Statements
Certain statements in this press release are forward-looking statements within
the meaning of Section 27A of the Securities Act of 1933 and Section 21E of
Securities Exchange Act of 1934, as amended, and are subject to the safe
harbor created thereby, These statements involve a number of risks,
uncertainties, and other factors, including potential changes in market
conditions, which could cause actual results to differ materially.

SOURCE MasTec, Inc.

J. Marc Lewis, Vice President-Investor Relations, +1-305-406-1815,
+1-305-406-1886 fax, marc.lewis@mastec.com