Side entry agitators offer efficient mixing for large scale mixing processes. Side entry mixers are often used in mixing processes where it becomes inefficient to increase the shaft length and diameter of a top entry mixer to achieve the same mixing specifications. To achieve the highest efficiencies possible, we designed an impeller called a high-efficiency fluid foil, which has has a very high thrust to power ratio giving this side entry mixer maximum flow efficiency. These mixers can be installed anywhere on the side of a mixing vessel and because of their shorter shaft length and larger, high flow impeller, multiple side entry mixers can be used in one vessel to increase agitation.