Sandman is a cloud based, data analytics driven decision support for optimisation of a foundry's green sand system which could, collaterally reduce, related casting defects. Its unique SANDMIX algorithm helps foundries achieve a dose-by-need additive prediction based on the foundry's consumption, sand properties and casting data over long and continuous data sets, thereby optimising additive consumption and reducing associated costs. ; ; Data analytics is transforming the way the world is looking at their data legacies and mining their digital as well as their experiential data, to reclaim lost profits as well as to be able to predict future events, to avoid mistakes of the past and build and innovate based on their invaluable data legacy.