Firms in the city's heavy industry have been told to limit or halt production during heavily polluted days.

Sangha Mining said it will invest $10 billion to develop the projects.

China's Ministry of Ecology and Environment has urged the country's top steelmaking city – Tangshan – to crack down on violators of air quality rules.

Iron ore production capacity at the site should return to 12 million tonnes a year once the commissioning period is over.

The price of spot iron ore for delivery to north China has fallen in recent sessions as the market struggles to work through a competing series of both bullish and bearish factors.

Shareholders will vote on the new board in an assembly on April 30.

The company will focus on exploration and wringing more value out of existing assets

Tsingshan signed a $1 billion outline agreement with Zimbabwe in June 2018 to build a 2 million tonne-per-annum steel plant.