Imerys SA reported an 88% increase in profit for Q2 2010 driven by an upturn in volumes and faster inventory rebuilding, the French industrial minerals group said.Current operating income rose to €123.2m. ($160m.) from €65.6m. in the same period last year, while sales increased 28% to €871.4m.The group’s ceramics, refractories, abrasives and foundry (CRAF) minerals group saw the biggest improvement, with sales rising 54% as demand from the steel and other key end markets recovered."Our sales volumes grew in the first half, especially the second quarter,...