Investigations are continuing following a huge blaze at near Leyland Industrial Estate in Wellingborough on Friday.
The fire broke out before 9am on Friday at the site where 14 crews and a total of 60 firefighters were battling the blaze.
Northamptonshire Fire and Rescue Service (NFRS) have had a continued presence at scene over the weekend and yesterday (Monday).
A spokesman for NRFS said: “Fire Crews are attending every four to six hours to conduct after fire inspections and to monitor the remaining hot spots and structure.
“Over the weekend and yesterday NFRS met with key stakeholders on site to assist with business continuity and the recovery phase. Through working together, the site re-opened on Monday morning with restrictions limited to the scene of the fire.
“Today (Tuesday), a structural engineer is due to attend the site and assess the stability of the building. This has two purposes; firstly, to assist with safe assessment of operations for the final phases of extinguishing ‘hot spots’ and, secondly, to assess the building as part of the business recovery phase.”
Yesterday’s meeting on site also included updates on the environmental issues. There is now a minimal risk for residents from the smoke and therefore the advice to close doors and windows and stay indoors has been relaxed.
The fire investigation will continue on site this week with specialist fire investigators from NFRS, loss adjusters and insurance representatives.
The industrial estate is on the eastern edge of Wellingborough, off the B571 Irthlingborough Road.