1) Coldwater fish 2) Coldwater fishes 3) Does foundry work 4) Extracts metal from 5) Extracts metal from ore 6) Friday dish 7) Fuses ore 8) Gets the lead out 9) Large-scaled fish 10) Operates a refinery 11) Prepares ores 12) Processes ore 13) Produces slag 14) Purifies metal 15) Puts in a blast furnace 1) Osmeridae 
Smelts was old British stock exchange slang for British and Australian copper shares.