CORAL GABLES, Fla., July 17, 2007 /PRNewswire-FirstCall via COMTEX News Network/ -- MasTec, Inc. (NYSE: MTZ) today announced that it will release results of operations for the quarter ended June 30, 2007 after the market closes on Wednesday, August 1, 2007. Senior Management will also hold a conference call to discuss these results on Thursday, August 2, 2007 at 10:00 a.m. Eastern time.

The call-in number for the conference call is (913) 312-1301 and the replay number is (719) 457-0820, with a pass code of 7818149. The replay will run for 30 days. Additionally, the call will be broadcast live over the Internet and can be accessed and replayed through the investor relations section of the Company's website at www.mastec.com.

MasTec is a leading specialty contractor operating throughout North America across a range of industries. The Company's core activities are the building, installation, maintenance and upgrade of communication and utility infrastructure systems. The Company's corporate website is located at www.mastec.com.

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

SOURCE MasTec, Inc.

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

http://www.mastec.com/