Firefighters tackling the fire at a recycling plant in Salford say the building could collapse.
It is thought the building will collapse in on itself, rather than outwards.
There are no other buildings surrounding it that are causing significant problems.
More top news
Theresa May will is set to launch her new industrial strategy as she chairs her first regional cabinet meeting in the northwest.
Overcooking foods such as chips, potatoes, toast and Sunday roast vegetables could increase the risk of cancer, according to a study.
Deanha Neely will appear in court later charged with the murder of Derek Taylor, who was 71.