Unimin Specialty Minerals Inc., (New Canaan, CT), will raise prices for all its Minex, Imsil, Snobrite and Minbloc brand functional filler products, effective February 1, 2017, unless contractual agreements apply. Price increases will range from four to eight percent, depending on grade. The increase, the company says, is necessary to offset rising production costs, critical support and continual reinvestment. www.unimin.com