9-6: Develop a PFD(Process Flow Diagram) to separate cardboard, newsprint, high-grade office and computer paper, magazines, and contaminants such as carbon paper and FAX paper and wire-bound notebooks from mixed paper that is to be collected separately from residential and commercial sources. Prepare a list of the equipment that will be required. Assume 50 ton/d of mixed paper will be processed 5 d/wk.