NEWS
For Immediate Release                          From MasTec, Inc.
April 22, 1998                                 3155 N.W. 77th Avenue, Suite 135
                                               Miami, Florida 33122-1205
                                               Tel :    (305) 599-1800
                                               Fax :    (305) 406-1908
                                               For more information contact:
                                               Investor Relations Department
                                               invrels@mastec.com


                MASTEC, INC. ANNOUNCES NEW SENIOR VICE PRESIDENT

MIAMI, FL - MasTec,  Inc. (NYSE: MTZ) announced today that Julio G. Rebull,  Jr.
has joined the Company in a newly created  position of Senior Vice  President of
Marketing and Corporate Communications.  Mr. Rebull was previously the President
and co-founder of JGR & Associates (JGR), a marketing  communications firm based
in South  Florida.  During his tenure at JGR, Mr. Rebull  successfully  directed
communications  programs for a diverse  portfolio of clients,  including fortune
500 companies such as American Airlines and American  Express,  and governmental
entities such as the Costa Rican Tourism  Board,  throughout  the United States,
Latin America and the Caribbean.

Jorge Mas,  Chairman and Chief Executive  Officer, said:  "We are always seeking
the best  talent  available to  help support our  growth  strategy.  Julio has a
great business  mind  and  is  a  recognized  communications  strategist that we
believe will be a great addition to the MasTec management team."

"This is an exciting  opportunity to  use my knowledge and skills as part of the
visionary  team at MasTec",  commented Mr. Rebull.  "MasTec is without a doubt a
leader in  one of  the  most exciting  industries and  has positioned  itself to
continue as the leader."

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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