| Show SMELTING OF ZINC ORE ORETi ORES S Ti Time ot of zInc Is tr or of Rf as t a backward art the Iho smelt Ile hiim 1 still UI expensive as aim wll with thoU that o froth anti copper uro Willie tIme proportionate I I 1 r e rP t N c rJ i u P u tl 1 j u t A I ae i lon tion of oC metal Is greatly Interior Tubs This liha hn rests resl however 01 on false ot of on The zinc usa ns I it rul muki with Ith ore oro which HIS already 1 concentrated to 10 1 a hIgh lerl 1 sri th t hut his Is 19 tl tO that or the smelter ot of or ot of black tn tin orl ore ruther to 10 that ot of time tho smelter ot of or of oC block black tin ore rather titan to lo that of oC or copper le I 1 who has to treat n a very ery large ot of otoro mire oro fore foro I it comparatively lt of metal In other words the tha copper I a of and even oen OI thA zinc makes a or of oni omit 21 or 31 In the 1111 Ics ot of r raw material It I to lo utIlize ant I ti a greater eater but I it tIme Iho 0 lust o of the 1 hl lie I referred terrell to Iho or of time the crude ure 10 11 from thu the POUt 11 |