Federal records filed Tuesday show Guillen says he took more than 100 pounds of copper from a recycling bin at the plant, put the metal into his personal vehicle during work hours, then sold the copper to a recycling company.
Guillen was an electrician apprentice at the plant near Amarillo from October 2009 until January.
Guillen's former supervisor, Stephen Wayne Taylor, was sentenced Monday to six months in prison in the theft investigation. Taylor admitted stealing paint and power tools from Pantex. He worked at the plant from mid-2009 until last September.
