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In the late 1960s, ABM acquired the companies later known as Ampco System Parking, CommAir Mechanical, Amtech Elevator Services and Amtech Lighting Services. [8] [13] In 1971, ABM made its debut on the New York Stock Exchange under the ticker symbol ABM. [10] ABM Engineering was established in the early 1990s and received ISO 9002 certification ...
At the time, the board still had a number of Aboriginal missions, and Clint travelled around them, establishing co-operatives at Lockhart River Mission (1954), Moa Island, Torres Strait (1956), and Cabbage Tree Island (1959). [10] In 1957 Fr John Hope of Christ Church St Laurence gave Clint a house, Tranby, for his work with Aboriginals. [11]
There are a limited number of systems worldwide that can intercept intercontinental ballistic missiles: [a] The Russian A-135 anti-ballistic missile system (upgraded in 2017 to A-235) [1] is used for the defense of Moscow. It became operational in 1995 and was preceded by the A-35 anti-ballistic missile system.
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An ABM defense system could be overwhelmed with the sheer number of warheads. [4]: 217 Upgrading it to counter the additional warheads would be economically unfeasible: The defenders required one rocket per incoming warhead, whereas the attackers could place 10 warheads on a single missile at a reasonable cost.
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This is a table of the most widespread or notable anti-ballistic missile (ABM) systems, intended in whole or part, to counter ballistic missiles. Since many systems have developed in stages or have many iterations or upgrades, only the most notable versions are described.