Kruitmolen (gunpowder factory)
At a safe distance from Amsterdam, gunpowder factory 'De Oude Molen' was built in 1719. Initially, the gunpowder factory was fueled by peat from the nearby polder. In 1782, the factory exploded, and in 1953, there was another accident. During the last explosion, many dead cows were found in the surrounding pasture. The factory was permanently closed in 1990.