 Nyorai kupfuurira kweiyi ndima - Chikwata cha1961 na1985 chimwe nechimwe chaiva nemutambo wakaenzana mukati mehurongwa hwavo hwemitambo 162 iyo yakazotambwazve; chikwata cha1978 chakatamba tie-breakermutambo pakupera kwepurogiramu yavo yemitambo 162. 