it was occupied by the main offices of the Construction District of the Panama Engineer Division. The name was in honor of Lt. Col. Richard T. Coiner, Corps of Engineers, who died in August 1933 while serving as Department Engineer in the Canal Zone. In 1945, at the end of the Second World War, the U.S. Army transferred Camp Coiner to the Canal Zone and the area became Silver City's second suburb. The Army buildings were replaced with more suitable buildings, including the first "experimental housing" for local rate workers. The early 1950s brought about improvements which made of Silver City a more complete, better served town. In March 1951, a new swimming pool, bathhouse and luncheonette were built in a playground area east of the town's vocational school. The pool was 60 by 100 feet, built of reinforced concrete and lined with ceramic tiles. The luncheonette included a soda fountain, kitchen, merchandise and pastry cases and about ten tables, with a partial view of the pool. In 1951, construction of an extension to Silver City was begun to increase housing for the town and to relocate the last remaining families residing in Camp Bierd. The large scale extension of 139 duplex-type houses was built in two phases. The houses were set at angles to take advantage of prevailing breezes and were painted different colors to make them more appealing given their identical designs. This coloring led locals to name the new area "Rainbow City." Rainbow City, CZ In April 1952, Gov. F. K. Newcomer authorized the Panama Canal Review to conduct a poll of the residents of Silver City, including the area of Camp Coiner, to determine the name of their town. This was the only time in the history of the Canal Zone that residents of a community were given an opportunity to vote their preference for the name of their town. The poll was conducted as a house-to-house canvass by the Panama Canal Review in collaboration with the International Boy Scouts. Ballots were distributed to each of the approximately 1,280 households in town. Silver City's residents were given six proposed names to vote on: Silver City, Rainbow City, Folks City, Manzanillo, Granada and Mindi. The majority voted for Rainbow City, the name given to the newest area of town for its colorfully painted houses. On May 1, 1952, the change of name to Rainbow City was made