North York Moors potash mine: Arguments for and against
Three MPs have urged members of a national park authority to approve plans for a £1.7bn potash mine when they meet on Tuesday.
Developer Sirius Minerals wants to build the mine near Whitby in the North York Moors National Park.
The MPs, who represent constituencies in the area, said the project would bring "enormous economic benefits".
Danni Hewson reports.