Concentrations of Risk

3 Months Ended

Mar. 31, 2013

Risks and Uncertainties [Abstract]

Concentrations of Risk

Concentrations of Risk

The Company had approximately 290 customers as of March 31, 2013, which included some of the largest and most prominent companies in the communications and utilities industries. MasTec’s customers include public and private energy providers, pipeline operators, wireless service providers, satellite and broadband operators, local and long distance carriers and government entities. The industries served by MasTec’s customers include, among others: utilities (including electrical utility transmission and distribution; power generation; natural gas and petroleum pipeline infrastructure; wind farms, solar farms and other renewable energy; and industrial infrastructure) and communications (including wireless, wireline and satellite communications).

Revenue concentration information for the Company's top ten customers, as a percent of total consolidated revenue from continuing operations, is as follows:

	For the Three Months Ended March 31,
	2013	2012
Revenue from top ten customers	69%	71%

See Note 16 - Segments and Operations by Geographic Area for significant customer revenue concentration information.