brown smoke

brown smoke

[¦brau̇n ¦smōk]
(engineering)
Smoke with less particulates than black smoke; comes from burning fossil fuel, usually fuel oil.
References in classic literature ?
For the streets were so full of dense brown smoke that scarcely anything was to be seen.
Photos taken near the scene show plumes of brown smoke rising from the site on Bath Street where underground electricity cables were damaged.
A thick plume of brown smoke rose over the site after the collapse.
New cast house aspiration system together with high capacity bag filter allows removing up to 99% of dust and eliminate the emissions of brown smoke, which corresponds to European environmental standards.
Another onlooker said: "I was coming out from under the road bridge and I saw this massive cloud of brown smoke coming up.
Local TV news footage showed an unbroken line of flames stretching along a ridgeline sending grey, brown smoke billowing into the evening sky.
Local television news footage showed an unbroken line of flames stretching along a ridgeline, sending gray brown smoke billowing into the evening sky.
A mushroom cloud of gray, black and brown smoke, topped by billowing, white cumulus clouds, rose nearly 20,000 feet (6,100 meters) into the sky and hung over the area as residents scrambled to heed evacuation orders.
Thick brown smoke hisses up the chimney through a layer of powdery black slack.
Though the World Trade Center towers were not immediately visible from lower Whitehall Street, the breeze had carried a plume of light brown smoke southward.
Purple fountain grass (Pennisetum setaceum 'Rubrum') clusters around a path, while two reddish brown smoke trees draw your eye through golden clouds of flowering Stipa gigantea.