Over 17 million grenades were produced here! 🪖 Derek learns more about a nature reserve that played an important role in both the First and Second World Wars. The reserve, which employed nearly 700 people across the 1950s and 60s, now lends itself to be the home for adders, grass snakes, slow worms and even nightjars. #BestofWeathermanWalking #iPlayer #WorldWar #History #NatureReserve