linguistic:voice_change, structural:summarization
Canal warehouses

All these warehouse types can trace their origins back to the canal warehouses which were used for trans-shipment and storage. Castle field warehouses in Manchester are of this type and important as they were built at the terminus of the Bridgewater Canal in 1761.The Duke's Warehouse in the Castle field Canal Basin in Manchester was the first canal warehouse to have the classic design features of internal canal arms, multi-storeys, split level loading, terracing and water powered hoists, and was built between 1769 and 1771. The Castle field terminus of the Bridgewater Canal has attracted a considerable amount of interest from historians since the 1860s, and from archaeologists since the 1960s.These studies have developed two themes; the complexity and success (or failure) of the water management systems built by James Brindley, and the physical development of the basin as a ware-house zones.