Pulsator and Crushing Mill

(Printed on photo in white “DeBeers Floors – Pulsator and Mill.) Crushing Mill on left, Pulsator on right. To the pulsator is conveyed the concentrate from the various washing machines in locked steel trucks hauled by small steam locomotives. The concentrate is then passed through Jigs, which separate everything from the Diamonds except the various heavy crystals associated with them. The concentrate from the jigs then passes over patent oscillating Grease Tables. It is the peculiar property of the diamond, that it attaches itself to the grease While the other crystals pass over. At regular intervals the diamonds are picked from the tables, and boiled, to free them from the grease. They are then thoroughly cleaned, weighed, sorted & sent to the Head Office for valuation and sale.