MIAMI, May 10 /PRNewswire/ -- MasTec, Inc. (NYSE: MTZ) today announced that it has been awarded a master contract by Comcast Cable Communications, Inc. (Nasdaq: CMCSA) to assist in the build-out of the advanced fiber optic network infrastructure in Comcast's territories.

MIAMI, May 3 /PRNewswire/ -- MasTec, Inc. (NYSE: MTZ) announced today that it signed an agreement with Redback Networks, Inc. to engineer and install the equipment and infrastructure associated with Redback's Subscriber Management System(TM)product lines.

* 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.