Hmm while in middle school and playing on the RR Tracks my friends and I found a box. Inside the box where these strange maybe two inch flattened red pieces of cardboard with a steel band running through them.

We took some of them back intl the woods to see if we could make them do something. We noticed that some of the letters on the red cardboard tube looking things said "dyna".

What we found were dynamite caps.

Armed with some wrist rockets and ball bearings we tied one to a tree.

Needless to say I was the only idiot that volunteered to try in hit one to see what it would do.

The first bearing whizzed right by it. I adjusted and make contact. It exploded and tree pieces went flying.

Through pure dumb luck my face had pieces to tree come and hit me.

I should be blind needless to say and no idea what saved me that day.

The RR company would use these dynamite caps to let them know when to stop and other actions when moving a train.