a new sanitary demonstration area was constructed at the presidio of monterey, at first by officer trainees, and later be enlisted men and prisoners of war. this area contained about forty appliances, and was completely constructed from salvage material, except for cement, with about 1500 man hours of labor. a practice construction area ordered the permanent installations. during training a number of these appliances were in operation. to inaugurate the area, all of the headquarters staff was conducted on a tour in late may. food was prepared on the field ranges and the noon meal was served in the field, mess gear was washed and waste disposal carried out in the field incinerators.