2007
Ngo-August 2007, yatshala imali ekusungulweni kwesisekelo sokukhiqiza ezintathu kwe-zinc alloy, okungukuthi, indawo yokusebenzela ekhona, enemigqa engu-8, ephuma nyanga zonke yezinhlamvu eziyizigidi ezingu-50 kanye nokusetshenziswa kwenyanga. amathani angaphezu kwama-240 we-zinc alloy.