* Rating On Credit Facility Upgraded From Ba1 To Baa3 And On Senior Notes From Ba3 To Ba1 * Upgrade Follows S&P Upgrade Of Rating On Credit Facility From BB+ To BBB And On Senior Notes From BB- To BBB- MIAMI, May 1 /PRNewswire/ -- MasTec, Inc.

North American Net Income Was $12.1 Million Or $.40 Per Share A 175% Increase From The Same Quarter Last Year First Quarter Highlights * Internal revenue growth rate approached 36% * Operating margins improved 49% to 9.5% * Received new contracts in excess of $450 million * Successfully completed of

Austin J. Shanfelter Head Of Broadband Unit Assumes New Post MIAMI, March 14 /PRNewswire/ -- MasTec, Inc. (NYSE: MTZ) announced today that Austin J. Shanfelter, has been promoted to the position of Chief Operating Officer of MasTec, Inc. Mr.

MIAMI, March 14 /PRNewswire/ -- MasTec, Inc. (NYSE: MTZ) today announced that the Company's internal and external network service lines have been awarded more than $450 million in new infrastructure contracts over the last several months.

MIAMI, Jan. 3 /PRNewswire/ -- MasTec, Inc. (NYSE: MTZ) announced today that IBM Global Procurement has selected MasTec as a preferred provider of installation and maintenance services for IBM's Rapid Network Deployment Program.