Towards the end of the 1970s, a second storage building was built along Via Tartini. It has a metal structure and a vaulted roof, and sits next to the small building (Building 14) from the 1940s. This hangar like structure was used for various functions such as the carpentry, the masons’ warehouse and the waterworks. Building 15 bears witness to the great activity of the last decades from the 1970s onwards, with the completion of the seventh and final building lot.