Topic: Describe with diagrams an example PLC based control system used in mineral processing. Mineral processing includes: oil refining; separating minerals from ore; chemical extractions, such as: ethylene, propylene, methanol and related products. PLC based control is an engineering discipline that deals with PLCs, Instruments, Controllers, and Industrial Machines. What is expected in the case study report You will prepare a report of about six pages (do not exceed 10 pages including figures, tables etc):  On a topic assigned to you.  You will explain the problem with the help of a block diagram and develop a transfer function fully documenting all aspects of the mathematical modelling.  Provide a block diagram of multiple loops if necessary and show a single block or closed-loop system which is simplified from the multi-loop diagram.  Explain the above process with the help of references and list the references at the end of the report.  You are not required to create an original mathematical model. You can use available resources (textbook, online research articles or published industrial case studies) and summarize the modelling process in your own words.