MasTec Inc. – Underwriting Agreements Watch

from 8-K 37 pages $650,000,000 Mastec, Inc. 5.850% Senior Notes Due 2036 Underwriting Agreement

from 8-K 36 pages $550,000,000 Mastec, Inc. 5.900% Senior Notes Due 2029 Underwriting Agreement

from 8-K 51 pages $400,000,000 Mastec, Inc. 4.875% Senior Notes Due 2023 Underwriting Agreement

from S-4 25 pages Mastec, Inc. Dealer Manager Agreement

from S-1/A 20 pages Shares Mastec, Inc. Common Stock, Par Value $0.10 Per Share Underwriting Agreement

from S-3/A ~20 pages Underwriting agreement

from SC 13D/A 1 page Exhibit 1 the Undersigned Hereby Agree That This Amendment No. 1 to Schedule 13d Filed by US With Respect to the Common Stock of Mastec, Inc. Is Filed on Behalf of Each of US. Date: September 23, 1998 Jorge L. Mas Canosa Holdings I Limited Partnership By: Jorge L. Mas Canosa Holdings Corporation, General Partner By:.s. Jorge Mas, President Jorge Mas, President Date: September 23, 1998 Jorge Mas Holdings I Limited Partnership By: Jorge Mas Holdings Corporation, General Partner By:/S/ Jorge Mas, President Jorge Mas, President Date: September 23, 1998 /S/ Jorge Mas Jorge Mas Page 11

from S-3 ~50 pages Underwriting Agreement