What efforts are being made by the government to save the Taj Mahal?

(N/A) The government of India announced an action plan named 'Taj Trapezium' in $1995$ to protect the Taj Mahal. This plan aims at clearing the air of the city and towns near the Taj Mahal. Under this plan,more than $2000$ polluting industries operating inside the Trapezium were required to switch to the use of natural gas or liquefied petroleum gas $(LPG)$ instead of coal or oil.
$A$ new natural gas pipeline was established to bring more than half a million cubic metres of natural gas per day to this area.
People living in the city are also encouraged to use $LPG$ in place of coal,kerosene,or firewood.
Vehicles plying on highways in the vicinity of the Taj are encouraged to use low-sulphur content diesel.