Drainage When? -1859 to 1965 Who? -other adventurers Activities: -built shafts and dams -tried to plug tunnel Result: -all attempts failed		Other adventurers soon joined the hunt. From 1859 to 1965, many groups built shafts next to the Money Pit to drain it of water. One group even built a dam in Smith’s Cove to block the water at its source, but a storm later destroyed it. They then tried using dynamite to plug the flood tunnel. All attempts to drain the pit failed.