This document discusses team building and leadership through a case study of a mining industry. It explains that a mine manager must lead various sub-teams effectively and efficiently to produce coal safely and achieve targets. The manager delegates work to sub-team leaders and grooms team members to take independent decisions. It presents a mathematical model showing that the strength of a team is maximized when all sub-teams apply their individual strengths in a united, pre-decided direction, like the maximum force generated by fingers of a closed fist. Only a good leader who coordinates all efforts can extract the best from a team and ensure progress towards goals.