These are Mechanical Operations (MO) handwritten notes covering topics; 
 Basics
 Solid Characteristics
 Size reduction 
 Mixing & Agitation
 Solid-Liquid separation
 Fluidization
Solid-gas separation
Solid-solid separation
Transporation of solids
 
All topics have been thoroughly discussed with definitions, concepts and deriviations. It will help you in preparations for classroom exams, GATE exam and interviews.