 They brought with them a great deal of valuable scientific equipment.Wilson's group dismantled the cyclotron at Harvard University and had it shipped to Los Alamos; McKibben's brought two Van de Graaff generators from Wisconsin; and Manley's brought the Cockcroft–Walton accelerator from the University of Illinois.Communications with the outside world went through a single Forest Service line until April 1943, when it was replaced by five Army telephone lines.