Aggregated mineral pigments having a high surface area and useful in coating and filling compositions for ink jet printing media are manufactured by dry grinding an unground mineral composition starting material and then optionally acid treating the ground material. Also provide is a method of manufacturing a chemical mechanical polishing pad using the chemical mechanical polishing pad manufacturing assembly. Seedlings generated from the open pollination were planted out at Lawn Road, Havelock North, Hawke’s Bay, New Zealand. The feedback includes defining a 100% load level associated with the MCPA and feeding back information proportional to the measured gain level.