As a starting point for planning the physics measurements to be made during the start up of the pile, this memorandum describes a procedure for each of three cases, a large poisoned pile, running at power with a small unpoisoned pile but marking physics measurements with the large pile before going to power, and a similar case except that the physics measurements on the large pile are done after running with power on the small pile This memorandum should by no means be taken as a final proposal. It has resulted in uncovering shortcomings in instrumentation which have been covered in other memoranda. Estimates of the time required for the physics measurements are given. These will furnish you with a basis for discussion with the Operating Supervision to estimate the total time required for each step.