MasTec Commences Remote Network Operations Monitoring Center

June 29, 2000

Miami, June 29 /PRNewswire/ -- MasTec, Inc. (NYSE: MTZ) announced today that it has commenced operating a remote network operations monitoring center, a state-of-art facility providing remote network monitoring and management, network consulting, intelligent maintenance and management solutions for emerging generation communication networks.

The center will primarily focus on corporate and communication customers that are rapidly expanding their networking capabilities, generally driven by higher user expectations. This includes corporate customers in the retail and financial industries as well as new players in the communications market: ISPs, ASPs, and collocation center providers. The center will be a high end complementary service to MasTec's enterprise networks integrated design, installation and maintenance business supporting complex Internet, Intranet and Extranet solutions.

"Organizations are becoming more dependent on networks for reliable delivery of corporate information, e-commerce, and other mission critical applications," said Joel-Tomas Citron, President and CEO of MasTec. "MasTec's NOC will become the nerve center responsible for maintaining our customer's network stability and predictability."

MasTec is the largest end-to-end communications and energy infrastructure service provider in North America. MasTec <www.mastec.com> designs, builds, installs and maintains internal and external networks supporting the Internet, Internet-related applications, e-commerce and other communications and energy facilities for leading telecommunications, cable television, energy and Fortune 500 companies.

This press release and any accompanying documents contain or may contain forward-looking statements, such as statements regarding MasTec's future growth and profitability, growth strategy, and anticipated trends in the industries and economies in which MasTec operates. These forward-looking statements are based on MasTec 's current expectations and are subject to a number of risks, uncertainties, and assumptions. Should one or more of these risks or uncertainties materialize, or should the underlying assumptions prove incorrect, actual results may differ significantly from results expressed or implied in any forward-looking statements made by MasTec in this press release. These and other risks are detailed in this press release or documents filed by MasTec with the Securities and Exchange Commission. MasTec does not undertake any obligation to revise these forward-looking statements to reflect future events or circumstances.
SOURCE MasTec, Inc.
Web site: http: //www.mastec.com
CONTACT: Carmen M. Sabater, Senior Vice President & CFO, MasTec, 305-406-1866, or e-mail, csabater@mastec.com