MIAMI, Aug. 7 /PRNewswire-FirstCall/ -- MasTec, Inc. (NYSE: MTZ) announced that it will release second quarter results after the markets closes on Tuesday, August 12th. Executives of MasTec will hold a conference call with the investment community on Wednesday, August 13th, 2003 at 10:30 a.m. eastern time, to discuss second quarter results.

The call in number for the conference call is (719) 457-2637 and the replay number is (719) 457-0820, with a passcode of 354413. The replay will run from August 13 to August 27. Additionally, the call will be broadcast live over the Internet at http://www.firstcallevents.com/service/ajwz385821486gf12.html or through the investor relations section of the Company's website at www.mastec.com.

MasTec is a leading communications and energy infrastructure service provider in North America and Brazil. We design, build, install, maintain and monitor internal and external networks for leading telecommunications, broadband, energy and Fortune 1000 companies.

     For Info, Contact:
     J. Marc Lewis
     Vice President-Investor Relations
     MasTec, Inc.
     305-406-3165
     305-406-3138 fax
     marc.lewis@mastec.com

SOURCE MasTec, Inc.