An in dept review of the Development of Operating Model for the Design of Stirrer Arms of Slurries is reported. The works of several authors were reviewed. These works covered research on the importance of slurries, application of different slurries in the area of Agriculture and agricultural farming, construction and allied industries, foods and pharmaceutical industries, chemical and paints industries. Also considered were the research works on the design, fabrication and test investigation of performance of different stirrer arms. From the review, three key outcomes from three set of researchers were identified thus: Researcher team 1: the TTP propeller was the most efficient in liquid phase mixing; Researcher team 2: the TEET geometry contributed the best quality of the mixing and significantly reduced the cost of the mixing process; Researcher team 3: the two Z blade stirrer arm was considered as the best in terms of mixing effectiveness. These three outcomes appear as standalone and do not give the user(s) information on comparative advantages for deployment of stirrer arms. Consequent on the above, further theoretical and empirical research will need to be done to evaluate the Order of Merit of these stirrer arms to be called to bar.