S. 153D: Assessment-Search]-Approval-Departmental Representative produced a sealed envelope stating that he is relying on a “Confidential” document to prove “Application of mind” by the officer.-Each assessment year is different from the other, and the facts/additions made in separate assessment years demand separate application of mind, as is the requirement of S. 153D. Non-application of mind]-The order was quashed and set aside.[S. 132, 153A]