Three Phase Line Construction (@ThreePhaseLine) header
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We are a minority-controlled transmission & distribution construction firm that safely and smartly engineers, procures and builds utility assets across America.

Rochester, N.H.
Joined March 2021
Click the link below for safety tips to help ensure your holiday weekend is firework incident free. Happy 4th of July! loom.ly/NBpLSkQ #ThreePhaseLine #3phase #mastec #4thofjuly #safety
In St. Louis accepting (on behalf of our workers) three, prestigious #safety awards from @AmerenCorp Want to learn more? loom.ly/7UhRTZY #utilityindustry #thankalineman #transmissionlines
We welcome you to join MasTec’s Power Delivery Group, in booth #4657, at the IEEE PES T&D Conference & Exposition in New Orleans on April 26th-28th!
We welcome you to join MasTec’s Power Delivery Group, in booth #4657, at the IEEE PES T&D Conference & Exposition in New Orleans on April 26th-28th!
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Today is National Lineman Appreciation Day, to honor lineworkers, here is list of influential linemen throughout history: huskietools.com/2019/08/19/l… #nationallinemanappreciationday #thankalineman
We welcome you to join MasTec’s Power Delivery Group, in booth #4657, at the IEEE PES T&D Conference & Exposition in New Orleans on April 26th-28th!
Enedina Alves Marques was the first black woman to receive an engineering degree in Brazil. Want to learn more about here? loom.ly/LNf5YFw #enedinamarques #bethebias #womenshistorymonth
Today, for #womenshistorymonth, we're spotlighting British engineer Jeanie Dicks who led the electrification of Winchester Cathedral. Want to learn more? loom.ly/k4yrXL8 #jeaniedicks
On International Women's Day, we salute all women contributing to the power industry. #breakthebias
In honor of Thomas Edison's birthday, here are four facts about this inventor and businessman. More facts can be found here: loom.ly/nEyP3rc
We hope you have a safe and happy New Year!