Civil war cannon ball and shell fuses explained

I was watching a youtube video of Britain's Depths of History and he at a site digging lots of shell and cannon ball fragments and some fuses. But as you can imagine, the fuses were rusted and covered in dirt and was hard to tell what they were.

Here is an old video made by Aqua Chigger that really hits the topic of fuses and fuzes quite well.

https://www.youtube.com/watch?v=ixX2rzH-0Sk