Show Nightmare Job in Puerto Rico Completed by Navy SAN JUAN PUERTO RICO RICO- RICO Completion of the air and naval base bue on Isla Grande an engineers dream which often otten was waa tha nJ night nightmare mare t- t mare was announced by ky the navy The Th base was built on mangrove swamps some som portions ot of which were 8 feet under water The be tract now has been beer converted into inte solid soUd land with an aa area of at about acres I making it probably the most complete com com- complete cosa and modern naval air base e under the American flag the na navy said aid Designed originally to cost the base basa was expanded during construction until It finally cost 30 30 I |