Sweet Sawdust wrote:

Maybe not wood shops, but flour mills didn't even allow candles in the
building.

And in the 19th century, exploding workshops _were_ a hazard.

So when did a work shop in the 1800s that was making something other than
gunpowder explode?

A flour mill is not a "workshop", it's a "mill".

--
--John
Reply to jclarke at ae tee tee global dot net
(was jclarke at eye bee em dot net)