39 CONSTRUCTION WORLD MAY 2017 He emphasises that while CPMs have experienced production managers and staff, it is seldom affordable to have their own materials experts. This is where AfriSam’s Efficiency Audit teams can play a valuable role. Implemg down the drain, be it in the form of water, cement, sand or other costly production inputs.” He concludes by reiterating the import- ance of looking at the whole production process for efficiency opportunities, rather than trying to save on one or other input in isolation. 