boradiindasteri ba dikhemikhale ba batho ba batsho ba freistata ba thea mesebetsi more matshediso khamphane ya tlha hiso ya dikhe mikhale ya tikolo ho eo e a thusetsa twantsho ng ya leqeme la mesebetsi ka ho thea mesebetsi e tsi tsitseng e ka bang 70 harri smith, freistata.

bosotimboni bemakhemikhali labamnyama basefreyistata bakha ematfuba emsebenti more matshediso inkhapani yakule ndzawo lekhicita ema khemikhali iyasi ta ekulweni nekuswe lekala kwematfuba emse benti ngekutsi yakhe ema tfuba emsebenti lasimeme lalinganiselwa kuma70 endzaweni yaseharrismith, efreyistata.
