As an underground lineman, your job is to install, repair, and remove elements of electrical construction like wires and boxes. Your duties may include performing maintenance on underground systems, moving through tunnels or vaults, and checking live systems for damage. This job title refers to two different positions, and you may perform either or both of these roles depending on the type of construction involved. The first category focuses on electrical wires buried in pipes surrounded by dirt, which may require the use of digging tools to reach. The other type of underground lineman position involves traveling into tunnels and other access ways that have electrical lines running through them.