%A Jorge Almeida %A J. Orestes Cerdeira %A Manuel Cruz %A Paulo B. Vasconcelos %X This report deals with reducing the high costs resulting from the wear and tear of the fork-lifts used to store or collect items in a warehouse. Two problems were identified and addressed separately. One concerns the way items should be stored or collected at storage locations on the shelves of one corridor. The other problem seeks for an efficient way to define which fork-lift should operate on each corridor, and the order by which the fork-lifts should visit the corridors. We give to both problems formulations that fit in the framework of combinatorial optimization. %D 2008 %L miis184 %T Warehouse Storing and Collecting of Parts