but with more than double the capacity; (this still stands on the river bank, the earlier magazine having been demolished in 1964). At the same time, buildings were constructed (alongside the shifting house) for storing and maintaining artillery shells; but these soon proved too small, so the site began to be extended to the north, where additional shell stores were built from the 1860s onwards. A little further to the north, a group of large houses were bought to serve as offices for the depot. There was not enough space, though, for further bulk storage of gunpowder, so in 1875 a separate set of five magazines were built, inland at Chattenden, and linked to Upnor by a narrow-gauge railway (see below); the Upnor magazines were then converted into filled shell stores. In 1891 Britain's Ordnance Yards were split between the Admiralty and the War Department, Upnor going to the former, Chattenden to the latter. The Admiralty therefore embarked on building a new inland depot, next to Chattenden, at Lodge Hill; opening in 1898, it dealt principally with cordite. At Upnor itself further Shell Stores was built in the 1880s, supplemented by new buildings for storing wet and dry guncotton (used in torpedoes and mines) in 1895. The site was extended further to the north in the early 1900s to allow construction of a much larger store for filled shells and another for mines. At the same time a complex of buildings for filling shells with powder (and later also with trotyl and amatol) were added behind the original 'A' and 'B' magazines. The three sites, Upnor, Lodge Hill and Chattenden, were active as Royal Naval Armaments Depots until the mid-1960s. Thereafter they remained in military hands as part of the Royal School of Military Engineering until the mid-2010s. Present day The Lower Upnor site was put up for sale in 2014. Two years later, the Grade II* listed 'B' Magazine was being converted into offices, while a residential building of similar proportions was being erected on the footprint of the demolished 'A' Magazine alongside; behind the magazines, more apartments were planned within the surviving concrete traverses (blast walls) of a demolished set of shell-filling rooms (dating from 1906). Meanwhile, the surviving buildings to the north were also being refurbished for light commercial and retail use. The inland depots, latterly known as Chattenden and Lodge Hill Military Camps, were put up