No person shall knowingly within the City of Baltimore design, produce, deploy, launch, maintain, or store nuclear weapons or components of nuclear weapons. In the case of persons with existing contractual agreements for any of the aforementioned activities, this prohibition shall take effect 3 years after the adoption and publication of this Part; otherwise, this Part takes effect upon enactment. No person who is not, as of the effective date of this Part, engaged in the design, production, deployment, launching, maintenance or storage of nuclear weapons or components of nuclear weapons, shall, within the City of Baltimore, commence any such activities after the effective date of this Part. City Code, 1976/83, art. 3, §3(a) Ord. 92-012