Workers in the potrooms performed various tasks. Tapper carbon changers removed molten aluminum and replaced carbon anodes from the pots. Overhead crane operators helped replace carbon anodes, transported and added alumina via portable bins, and moved all pot tapping equipment. Pot tenders periodically broke the insulating crust that formed at the surface of the bath mixture, added aluminum ore, and aligned the anodes. They used wooden probes to break up air gaps in the molten material. Potroom helpers added ore and other materials to the pots and performed miscellaneous tasks. Heat-stress carbon setters were added to potroom crews during the warmer summer months. They performed the same duties as the tapper carbon changers, pot tenders, and potroom helpers.