(i) United States Postal service, or extending of APO facilities to all personnel at the site. (3) Operation of boat transportation in the lagoon beyond the needs of construction. Engineering design is proposed to be accomplished in the Zone of Interior for these reasons: (a) The nature of design is such that it can be as adequately done in the Zone of Interior as in the field. (b) Economies would be affected by reducing total personnel at the site as much as possible. (c) No loss of productive time would be incurred by time in transit of personnel. (d) Design forces would be close to manufacturer's data and consultation. (e) | Ready adaptation could be made in design in terms of avail-~ able materials. (f) Restricted data necessary to design can be readily controlled for security. (g) Design forces are more accessible to the Laboratory personnel directing the requirements. (h) No delay in start of design is implied, since the reconnais- sance of October 1948, and the proposed advance field forces will supply sufficient initial data.