Complex sentence: In 1904 the collection was moved to Sansovino's "Zecca" (built 1537-47), the building of the Venetian mint, and then expanded back into its adjacent original quarters and even into sections of the "Procuratie Nuove" facing Piazza San Marco.
Split into simpler sentences: In 1904 the collection was moved to Sansovino's "Zecca" (built 1537-47 as a mint). The Library has since expanded back into its adjacent original quarters and even into sections of the "Procuratie Nuove" facing Piazza San Marco.