MasTec Names Chief Operating Officer

March 14, 2000

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. Shanfelter, a 20-year industry veteran, has been the President of the Company's Broadband Service Line, serving clients such as AT&T Broadband, Cablevision, Charter Communications and Cox Communications. Mr. Shanfelter will continue reporting directly to Joel Tomas Citron, MasTec's President and CEO, and will coordinate MasTec's efforts throughout all service lines enhancing the way MasTec provides end-to-end infrastructure services to its clients.

"Austin has been responsible for the exceptional growth in our Broadband Service Line and the transformation of the group to an end-to-end engineering, installation, maintenance, and monitoring service provider," said Mr. Citron. "As we witness the emergence of integrated datacom customers offering bundled communication services, we will use Austin's knowledge and experience to provide a seamless solution to our clients and to improve efficiencies across all our service lines."

MasTec is the largest end-to-end communications and energy infrastructure service provider in North America. MasTec <> designs, builds, installs and maintains internal and external networks supporting the Internet, Internet-related applications, and other communications and energy facilities for leading telecommunications, cable television, energy and Fortune 500 companies.
SOURCE MasTec, Inc.
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CONTACT: Carmen M. Sabater, Senior Vice President & CFO, MasTec, Inc., 305-406-1866, or e-mail,