CONCRETE PRODUCTS & CAST STONE70 CPI %u2013 Concrete Plant International %u2013 4 | 2025 www.cpi-worldwide.comFig. 6: Tailings material 0-2 mm and 2-8 mm.Fig. 7: Vibrating press: production of 30 %u00d7 30 cm%u00b2 paving slabs.Fig. 8: Paving slabs 30 %u00d7 30 cm%u00b2.