Some friends in California found an old gold mine in the Sierra mountains and went exploring inside. A side shaft had been blocked with a pile of tailings, and when they scrambled to the top of the pile they found our why. Several cases of decades-old dynamite were stacked in the passageway, and the outside of the boxes were glistening with crystallized nitroglycerine that had leaked out of the sawdust filler of the sticks inside. That stuff is so sensitive a hard sneeze can set it off. They beat a hasty retreat and never went back inside!
Jerry
