worker badges?

[dagwood]

Can anyone help me with identifying these badges? I think they are from ww2?

[CBH]

These remind me of Pit Tags, used in coal mines to keep track of what workers where underground.
One # piece was worn by the worker while a corresponding # was left on the surface.
Mc Dowell would probably be the mines name, I have a similar badge from local coal mine.

[dagwood]

Thanks for the input. Makes sense now.