NEW CANAAN, CT – Unimin Corp., New Canaan, Connecticut, will raise prices for all MINEX®, IMSIL®, SNOBRITE® and MINBLOC® brand functional filler products effective Feb. 1, 2018, unless contractual agreements apply. The increases will be 5% for all products mentioned above. The increase is necessary to offset rising production costs, critical support and continual reinvestment.