https://everything2.com/title/Spelter
Spel"ter (?), n. [Cf. LG. spialter, G. & D. spiauter. Cf. Pewter.] Metal. Zinc; -- especially so called in commerce and arts. © Webster 1913.
spelter
https://www.brownbook.net/business/785175/avonride-ltd
Business profile: Avonride Ltd., Unit 4, Spelter Site, Caerau, Bridgend, Mid glamorgan, GB, CF340AQ, towing eqpt, trailers, mid glamorgan
mid glamorganltdunitspeltersite