... as silver was / is also used for jewellery.
I know the next point is a bit far leading and confusing as the understanding has something to do with German language and terminology only:
In German language "Pfeffer-Kuchen" for Christmas bakery is common, although it has no "Pfeffer"="pepper" in it.
Pepper was simply an overall term for spice in the past.
Same could mean "Glas"=jewellery ?
But: Huette is clearly a term, even nowadays used in German language, for an industrial plant as mentioned.
Regards
Moritz