user: Question: When is every date that control site condition or owner is machine shop on Martin Dr.?
Columns: ['Code & location', 'Missile Type', 'Defense Area', 'Dates', 'Control Site condition/owner', 'Launch Site condition/owner']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['M-02 Brown Deer Rd', '1B, 2C/18H, 30A/12L-U', 'Milwaukee', '1957-1971 Jun', 'Woods & subdivision', 'Obliterated']
SQL:

assistant: SELECT "Dates" FROM "Table" WHERE "Control Site condition/owner" = 'machine shop on Martin Dr.';