Mike Lawson

 is the head engineer at Hoover Dam in 2281. According to him, he makes sure the turbines keep spinning and the water keeps pumping. At the time when the Courier meets him, only four of the six turbines are operational. He calls the power station and the dam his babies as he's rebuilt or fixed them since his occupation there.

Background
Mike Lawson has been at that Hoover Dam since well before the first battle. When he first came to the dam, it only had one turbine spinning, but after the 2277 Battle of Hoover Dam, he got all six turbines running. During the battle, he spent his time in the power station.

Appearances
appears in Fallout: New Vegas.