Planning and controlling the supply chain is very important part of operations management. Riordan Manufacturing is a company on the cutting edge of the plastics business. In reviewing its processes, Riordan will explore each of the four primary forecasting techniques and elements of each that may apply to Riordan. Next, the impact production plans, master production schedules, rough-cut capacity planning, workforce size, and carrying inventory are explored and analyzed in relation to the budgets set by Riordan. Because Riordan is a manufacturing company, a comparison between Riordan Manufacturing and a service organization in regards to material requirements planning. Finally, material requirements planning system concepts will be examined.