▁material ▁for ▁co pper ▁st arter ▁sheets . ▁They ▁suffered ▁from ▁rapid ▁d eter ior ation ▁of ▁their ▁stri pp ability , ▁resulting ▁in ▁“ an ▁almost ▁daily ▁increase ▁in ▁difficulty ▁of ▁stri pping ”. ▁However , ▁following ▁the ▁success ▁of ▁early ▁install ations ▁in ▁Town sv ille , ▁T imm ins , ▁and ▁many ▁other ▁places , ▁the ▁permanent ▁st ain less ▁steel ▁c ath ode ▁technology ▁has ▁had ▁w ides p read ▁introduction . ▁ ▁Mov ing ▁into ▁elect row in ning ▁plants ▁ ▁The ▁Isa ▁Process ▁was ▁originally ▁developed ▁for ▁the ▁C RL ▁co pper ▁elect r ore fin ery ▁in ▁Town sv ille . ▁It ▁was ▁subsequently ▁lic ensed ▁to ▁the ▁Co pper ▁Range ▁Company ▁for ▁its ▁White ▁P ine ▁co pper ▁ref in ery . ▁ ▁The ▁next ▁lic ence ▁issued ▁was ▁for ▁an ▁elect row in ning ▁application ▁at ▁the ▁Bro ken ▁Hill ▁Associ ated ▁Sm el ters ▁( “ B H AS ” ) ▁lead ▁sm elter ▁at ▁Port ▁Pir ie , ▁in ▁South ▁Australia . ▁B H AS ▁commission ed ▁in ▁ 1 9 8 5 ▁a ▁sol vent ▁extra ction ▁and ▁elect row in ning ▁( “ S X – E W ” ) ▁to ▁recover ▁co pper ▁from ▁co pper – le ad ▁mat te ▁produced ▁as ▁a ▁by - product ▁of ▁the ▁lead ▁sm el ting ▁operations . ▁The ▁process ▁used ▁involves ▁le aching ▁the ▁co pper ▁from ▁the ▁material ▁using ▁an ▁acid ic ▁ch lor ide – s ulf ate ▁solution