Rocket motors were produced in this now abandoned industrial complex during World War II and into the 1950's. In the production buildings, heavy walls of cement separated the assembly alcoves from one another, with a shared glass wall to permit an explosion to escape with minimum damage to the rest of the building. Most of this area is now Wompatuck State Park, near Hingham, though several hundred acres are off limits, as some warehouses and weapons storage magazines from the original weapons depot remain.