This document provides information about an internship report completed by Sunil Kr Ahirwar at Northern Coalfields Limited (NCL) as part of his Bachelor of Business Administration degree. It includes an executive summary of NCL, the objectives and importance of the study, research methodology used including secondary data collection, and outlines of the report contents. The report examines NCL's marketing activities including annual maintenance, customer satisfaction feedback, sales processes, and NCL's contribution to parent company Coal India Limited.