Located on a backroad near the Rhydymwyn Valley Chemical Works, Woodside was used as a spill-over site for the storage of bulk chemical weapons. Storage at Woodside was in partially-buried tanks: 31 containing 55 tonnes and one containing 250 tonnes. The site was experimental in that it was built as a model for other bases around the country. These Forward Filling Bases would receive and store chemicals and were ready to weaponise them in response to a chemical attack against the United Kingdom. Today the field is used for the rearing of grouse.