Lesi sitshalo semboni yezitini sinezindawo zokusebenzela ezimbili zesakhiwo sensimbi, ezisetshenziselwa ukukhiqiza izitini ezingenalutho.
Indawo yokwakha yeshabhu yoku-1 ingamamitha-skwele ayi-3,396, kanti indawo yokwakha yeshabhu yesi-2 ingamamitha-skwele ayi-10,363.Uhlaka olujwayelekile lwensimbi luyamukelwa, futhi udonga nophahla konke kuyishidi likathayela elingu-0.6mm.
