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[i]Facility modifications were part and parcel of the operations debate, much of the discussion focusing on a new "contingency" arm for access to the workshop. The December 1969 plan called for entry through the side door, a new feature that KSC had lobbied for. In the assembly building, technicians would reach that door from service platforms; at the pad a new swing arm would provide contingency access. In 1970, the arm became the principal means of access to the workshop. The launcher's uppermost service arm (9, which Apollo astronauts used to board the command module) was relocated adjacent to the workshop's side hatch. An airlock, designed to protect the interior of the workshop from contamination, replaced the Apollo white room at the end of the arm. Rather than build a second airlock for operations in the assembly building, the engineering office recommended that the new arm be used there also.[/i][/B][/QUOTE]
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