The northern province of Quang Ninh has officially ceased the loading, unloading and transportation of goods, including clinker, cement and wood chips at Ha Long Bay.All these activities take place at Bai Tu Long Bay.The move is an effort by the local authority to preserve and promote the value of the world natural heritage site in order to serve the province's sustainable socio-economic development.Earlier, to protect Ha Long Bay's natural environment, the province also terminated the transportation of coal at the bay. Coal is transported by covered conveyer belts rather than road.