question_text: Who worked at the asbestos mines at Amiandos and the copper mines at Mavrovouni and Skouriotissa throughout the 1920s-1950s?
decomposition: return who  worked at  the  asbestos mines at   Amiandos throughout the   1920s-1950s ;return who  worked at  the  copper mines at   Mavrovouni and  Skouriotissa throughout the   1920s-1950s ;return who  is in  both #1 and  #2