This document is a training report submitted by Nishant Singh after completing a one-month training at Mecon Limited in Ranchi, India. The report focuses on the cold rolling mills section of the company. It provides details on the different types of cold rolling mills, the cold rolling process, annealing and skin passing processes. It also includes a basic overview of hydraulics and hydraulic components used in rolling mills like directional control valves, pumps and accumulators. The conclusion expresses gratitude to the officials at Mecon Limited for their support and for helping the author gain fundamental knowledge on cold rolling and mill operations.