Firefighters are continuing their work at a recycling centre in Worksop today (Wednesday).
A crew and engine was at the site throughout the night and will continue to dampen down at the scene.
One of the buildings on the site has collapsed, making it difficult for firefighters to gain access to the recycling material which is still smouldering inside.
The fire at the centre on Shireoaks Road broke out at around 5am on Sunday.
At its peak there were 10 fire engines at the site, battling the blaze which started in a building used for storing recycling material.