Enlargement of the United Nations members, or were dissolved. The UN officially came into existence on 24 October 1945, after ratification of the United Nations Charter by the five permanent members of the United Nations Security Council (China, France, the Soviet Union, the United Kingdom, and the United States) and a majority of the other signatories. A total of 51 original members (or founding members) joined that year; 50 of them signed the Charter at the United Nations Conference on International Organization in San Francisco on 26 June 1945, while Poland, which was not represented at the conference, signed it on 15 October 1945. Below
San Francisco International Airport interiors for a variety of noise control strategies. This pilot program was conducted for a neighborhood in South San Francisco and success was achieved in all of the homes analyzed. The costs turned out to be modest, and the post-construction interior sound level tests confirmed the predictions for noise abatement. To date over $153 million has been spent to insulate more than 15,000 homes in the neighboring cities of Daly City, Pacifica, San Bruno, and South San Francisco. The airport has four terminals (1, 2, 3, and International) and seven concourses (Boarding Areas A through G) with a total of