1. Historical Perspective and Introduction 2. Drilling Fluids 3. Solids Calculation 4. Cut Points 5. Tank Arrangement 6. Scalping Shakers and Gumbo Removal 7. Shale Shakers 8. Settling Pits 9. Gas Busters, Separators, and Degassers 10. Suspension, Agitation, and Mixing of Drilling Fluids 11. Hydrocyclones 12. Mud Cleaners 13. Centrifuges 14. Use of the Capture Equation to Evaluate the Performance of Mechanical Separation Equipment Used to Process Drilling Fluids 15. Dilution 16. Waste Management 17. The AC Induction Motor 18. Centrifugal Pumps 19. Solids Control in Underbalanced Drilling 20. Smooth Operations