This is the best summary I could come up with:

Crews arrived at the scene about 11:20am, and are working to bring the blaze under control using specialist appliances and aerial equipment.

Near the scene, the ABC saw a charred barrel flying into the air from the fire, and landing a few hundred metres away.

Anyone in areas affected by the thick black smoke has been urged to take shelter indoors immediately, and close all exterior windows, doors and vents.

The ABC understands the fire is at the site of the ACB Group factory, where a worker died in a chemical explosion last year.

Victoria Police said there had been no reports of injuries and it was believed everyone inside the factory had been evacuated safely.

The local community has been urged to avoid the area to let emergency services do their job, and motorists have been warned not to stop on high speed roads to watch the fires.

The original article contains 360 words, the summary contains 149 words. Saved 59%. I'm a bot and I'm open source!

More than 180 firefighters have responded to a huge factory fire in Derrimut, in Melbourne's west, where hazardous material and unknown toxins continue to burn.

Fire Rescue Victoria (FRV) said there had been a large chemical explosion at the factory on Swann Drive, resulting in one of the state's biggest fires in recent years.

Clearly a plot by big chemical to put the mind control drugs into the air!11!!

It's good nobody got hurt, given the last time I saw a chemical explosion reach the news (obviously the scale is different, but still)