Due to the limited area, the slight additional refinement obtained by computing a Transverse Mercator Grid would not have been practical. The origin of plane coordinates, N 100,000, Ff 100,0CC, was taken at station CORAL and the basis of bearings was a true meridian through this station as computed through the adjusted figures from the line, station RUNIT to station SAND. The 1957 expansion survey included establishing new second order stations on sites YVONNE, SALLY and GENF and third order stations on sites GLENN, HENRY, JAMES and KEITH. The triangle closure to include station LANTANA on site GLENN exceeds the However, the triangulation towers were * damaged by a storm before re-observing could be accomplished. Repreduced from_the holdings of theNational Archtves: Pacific Southwest Region > allowable closure limits. As an evaluation of the observing results indicated the values to be within a tolerance of one part in 5,000, it was decided to defer the re-observing until such time as more precise values are required for the station. (3)