I worked one Summer in a gunpowder mill in a rural industrial park.
The mill looked vaguely like a giant coffee grinder. One worker fed inch-long pellets into the grinder. one worker fed water from a lawn garden hose into the works, lest the powder explode. One worker pulled the barrels of chopped powder up for grinding.

You can dream daydreams while grinding gunpowder. In many ways, we all do.

Thanks for Anchor for yet another inventive vocal track.