This document summarizes the key details of the M.C. Mehta v. Union of India case regarding pollution of the Taj Mahal. It discusses how M.C. Mehta filed a public interest litigation to address air pollution caused by various industries that was damaging the white marble of the Taj Mahal. The court ordered a ban on coal and coke usage by industries in the Taj Trapezium Zone and mandated switching to natural gas or relocating. The document also examines the sources of pollution, technical reports on the pollution's effects, and the court's views and subsequent orders to constitute committees to address the issues and develop an action plan for pollution control.