Exhibit 21
MasTec, Inc.
AFFILIATED ENTITIES
December 31, 2014
NORTH AMERICA
Big Country Energy Services, Inc. (Canada) | (100% by Fabcor Targetco Ltd. (Canada)) (100% by 1867064 Alberta ULC (Canada)) (100% owned by MasTec Cooperateif (UA)) |
Big Country Energy Services LLC.(US) (CO) | (100% owned by MasTec North America, Inc.) |
Bottom Line Services, LLC (DE) | (94% owned by MasTec North America, Inc.) (6% owned by Alan Roberts) |
Dynamic Tower Services, Inc. (LA) | (100% owned by MasTec North America, Inc.) |
EC Source Services, LLC (FL) | (100% owned by MasTec, Inc.) |
MasTec Network Solutions, LLC f/k/a Nsoro MasTec, LLC (FL) | (100% owned by MasTec, Inc.) |
MasTec North America, Inc. (FL) | (100% owned by MasTec, Inc.) |
Pacer Construction Holdings Corporation (PCHC) (Canada) | (100% owned by 1828200 Alberta Ltd. (Canada)) (100% owned by 1867064 Alberta ULC (Canada)) (100% owned by MasTec Cooperateif (UA)) |
Pacer Foundations Corporation (PFC) | (100% owned by PCHC) |
Pacer Foundations Construction Corporation | (100% owned by PFC) |
Pacer Construction Corporation | (100% owned by PCHC) |
Pacer Construction Management Corporation | (100% owned by PCHC) |
Pacer Projects Corporation | (100% owned by PCHC) |
Pacer Mamisiwin Corporation (PMC) | (100% owned by PCHC) |
Pacer Mamisiwin Construction Corporation | (100% owned by PMC) |
Pacer Newfoundland and Labrador Corporation | (100% owned by PCHC) |
Patch Point Energy Services LTD. (Canada) | (100% owned by BC Acquisition II, LTD. (Canada)) (100% owned by 1867064 Alberta ULC (Canada)) (100% owned by MasTec Cooperateif (UA) |
Precision Acquisition, LLC (WI) | (100% owned by MasTec, Inc.) |
Precision Pipeline LLC (WI) | (100% owned by Precision Acquisition, LLC) |
Pumpco, Inc. (TX) | (100% owned by MasTec North America, Inc.) |
Wanzek Construction, Inc. (ND) | (100% owned by MasTec North America, Inc.) |
WesTower Communications, Inc. (DE) | (100% owned by MasTec Network Solutions, LLC (FL)) |
Certain other affiliates have been omitted because, in the aggregate, they would not constitute a significant subsidiary.