Second Quarter Highlights * North American internal revenue growth rate approached 27% * North American net income increased 61% * Operating margins improved to 12.3% * Internal Network Services group revenue grew 113% * E-center services positioned for continued growth * Strategic partners added *

MIAMI, June 29 /PRNewswire -- MasTec, Inc. (NYSE: MTZ) today announced the acquisition of GMR Telecom L.L.C, an e-center engineering and design firm servicing major telecommunications companies and equipment vendors throughout North America.

Miami, June 29 /PRNewswire/ -- MasTec, Inc.

as of May 29, 2000. Olaf Olafsson and William Shiebler re-elected to Board of Directors. Annual Shareholders Meeting remarks summarized. MIAMI, May 17 /PRNewswire/ -- MasTec, Inc.

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.