Wortley was a Reserve Ammunition Dump in South Yorkshire, to the west of Barnsley and north of Sheffield.



Advance Ammunition Parks used by the RAF were often enlarged to include USAAF munitions. These dumps which might exploit natural cave systems or dense woodland, also included concrete structures as a means of protection. Some were also used to store poison gas bombs or chemical weapons.



Wortley Hall was requisitioned by the RAF for use initially as the Headquarters for the operation of the site. Hence it giving its name to the site. Some US Officers were initially billeted in there. The munitions store stretched from Grenoside to near to Shepley. The site at Scout Dike was the main accommodation site and eventually the whole operational HQ and accommodation was transferred there in late 1943.



The site was initially fully commissioned by the RAF on April 10th 1942. It began its transfer to US forces in July 1942 and was fully adopted by the US Ordnance Corps on 1 October 1942. Hand over to the 8th Air Force was made in July 1943.