| http://www.w3.org/ns/prov#value | - The 2.2s NASA tower also served as an inspiration for the later approach of Snyder (WSU-to-UFL) whose developments and innovations fed back design improvements to the NASA tower and others as well, including the DDT (i.e. Spain, Australia and other small towers in the USA, see links). (General information for drop towers may be found here, with the largest facilities operating now in China, German
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