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from the operation of aircraft of any and all kinds, either now <br /> existing or to be developed in the future, for naviefation of, or <br /> flight in air, or from landing at or taking off from said airport, <br /> including ground run-ups and testing of aircraft engines . <br /> 3 . The right to regulate or prohibit the release into the air of <br /> any substance which would impair the visibility of or otherwise inter- <br /> fere with the operations of aircraft such as, but not limited to, <br /> steam, dust, and smoke. <br /> -I- <br />