CORAL GABLES, Fla., July 31 /PRNewswire-FirstCall/ -- MasTec, Inc. (NYSE: MTZ) today announced that it will release results of operations for the quarter ended June 30, 2006 after the market closes on Thursday, August 3, 2006. Senior Management will also hold a conference call to discuss these results on Friday, August 4, 2006 at 9:00 a.m. Eastern time.

The call-in number for the conference call is (913) 981-5592 and the replay number is (719) 457-0820, with a pass code of 8050407. 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 http://www.mastec.com .

MasTec < http://www.mastec.com > is a leading specialty contractor operating throughout the United States and in Canada across a range of industries. The Company's core activities are the building, installation, maintenance and upgrade of communication and utility infrastructure systems.

SOURCE MasTec, Inc.

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