A smouldering tip fire burst into flames again overnight.
Firefighters remain at the former Hunters Group site in Lockwood battling to protect a neighbouring firm, glass company Novaglaze.
The blaze started last Thursday night and fire crews say it could continue to burn “for a few weeks.”
Novaglaze, whose building backs onto the Queens Mill Road site, specialise in curved glass and provided replacement panes for the London Eye in 2013.
The firm have also supplied glass for the windows at the conservatory in Greenhead Park .
Director Gary Smith said: “The fire service have been absolutely excellent.
“Luckily, we have not suffered any damage but the fire is just two metres from the back of our building.
“The firemen had a plan from the start and put it into action.
“They assured us our building would be safe and they have stuck their word.”
Mr Smith added that being so close to the fire has actually minimised risks due to wind blowing the smoke away from the site.
"It’s more the local neighbours who are badly affected.
“The smoke is blowing far and wide, so none of our staff have suffered too badly.”
Watch Commander Andy Wooller, from Huddersfield Fire Station, said: “We were called back to the site at 4.30am on Wednesday with reports the flames had begun again.
“It’s been smoking but the fire has gotten going again.
“We want to assure the public that we are still attending regularly.
“Our main concern is to protect the Novaglaze building and trying to keep the levels of smoke to a minimum.
“It’s going to be at least a few weeks.
“Really the pile of rubbish needs to be removed. All we can do right now is to try and dampen the flames.”
Mr Smith added: “The limit is 70 tonnes of waste there - there must be about 3,000.
“It has been allowed to continue for the last two years.”