A fire burning at a recycling plant at Pialligo since Wednesday afternoon was extinguished on Thursday night, the Emergency Services Agency has confirmed.
Firefighters monitored hot spots throughout Thursday evening and will remain on site on Friday for clean up.
It took firefighters hours to contain the fire after being alerted to it at 1.40pm on Wednesday.
They remained on the scene overnight to control the blaze stretching about 40 metres by 40 metres.
The fire was about 1.5 metres tall at around 3pm Wednesday, after firefighters used heavy machinery, water and foam to contain it.
On Thursday morning 19 units from ACT Fire and Rescue and the ACT Rural Fire Service were still on the scene.
There were initially concerns for people's health with the smoke coming from the fire, and ACT Health urged people with asthma or other chronic respiratory illnesses or chronic cardiac diseases to stay indoors and not perform vigorous exercise.
But smoke from the fire was "significantly reduced" on Thursday morning the ESA spokesman said.
"The situation will be monitored closely throughout the day".
Fire crews used three graders on site in an effort to break up the pile of pallets, turning the material over while fire fighters hosed it down.
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