Kugeza mu myaka ya za 1980, ingano yo kugaburira ingano nini yo kumenagura toni 800 z'ibikoresho ku isaha yari igeze kuri mm 1800.Ibisanzwe bikoreshwa mu rwasaya ni inshuro ebyiri hamwe.Iyambere irazunguruka gusa muri arc yoroshye mugihe ikora, nuko yitwa nanone yoroshye ya swing jaw crusher;icya nyuma kizamuka hejuru no mugihe cyo kuzunguza arc, bityo nanone byitwa complexe swing jaw crusher.