NEWS
For Immediate Release                           From MasTec, Inc.
February 6, 1998                                3155 N.W. 77th Avenue, Suite 135
                                                Miami, Florida 33122-1205
                                                Tel :    (305) 599-1800
                                                Fax :    (305) 406-1908
                                                For more information contact:
                                                Edwin D. Johnson,
                                                Chief Financial Officer
                                                ejohnson@mastec.com


             MASTEC, INC. ANNOUNCES ACQUISITION OF PHASECOM SYSTEMS

MIAMI, FL - MasTec, Inc. (NYSE: MTZ) announced today the acquisition of Phasecom
Systems,  Inc.  of  Toronto,   Canada.   Phasecom  provides   telecommunications
infrastructure  services in Ontario,  Alberta  and  Saskatchewan,  Canada and in
Buffalo, New York and New Orleans, Louisiana.

Opening the Lines of  Communication(R)  worldwide,  MasTec is one of the world's
leading telecommunications and related infrastructure service providers, serving
clients  throughout  the  United  States,  Latin  America  and  Spain.  For more
information, please visit our web site at www.mastec.com.

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