Man Discovers a Hole in His Front Yard, Then He Takes a Look Inside

What the red paper was

Harold explained that you often came by that smell in construction because it was used when an old building needed to make room for a new one. It was time-consuming and expensive to take down these structures brick by brick. So, to save resources, they usually blew them up with sticks of TNT, which held a lot of this nitroglycerine. He held out the red paper; “this is what’s left of a stick of dynamite.”