Residents have been warned of possible health risks from toxic fumes and smoke from the Sims UK Metal plant in Long Marston, as fire crews continue to attend a fire that broke out recently.
Hereford and Worcester Fire and Rescue Service said they would remain at the scene until the fire is fully extinguished.
Public Health England reminded people with breathing or heart conditions living nearby to carry their medication.
Local authorities also issued statements telling residents to keep windows and doors shut.
Dr James Chipwete, consultant for Public Health England in the West Midlands, said there were no plans to evacuate anyone living close to the site.
“This is a typical fire on an industrial site and we are not aware of any specific chemical compounds in the smoke which would give us any cause for concern,” he added.
“Smoke from any source may contain substances that irritate the lining of air passages, eyes and skin; making the eyes and throat sore and possibly worsening any breathing or heart conditions, so people should do all they can to stay out of the smoke.”
Suzanne Ward, Environment Manager at the Environment Agency said: “We have monitored the local brooks and surrounding areas and have found no evidence of any environmental impacts at present.
Sims Group UK said that the fire involved 10,000 to 15,000 tonnes of auto shredder residue but was not impacting on operations.
Earlier this month, firefighters battled for more than 14 hours to control another fire at the Long Marston site.
The Sims Long Marston site was one of the two sites at the centre of a fraud investigation by the company over concerns that stock had been overvalued.