Simple Water Mist Scrubber for Congested Freeways? (tags)
...and bring these moistened,cooled exhaust gases and particulates back down to ground level as a congealed,liquified solution or aggregate.
El Monte Iron Foundry Pollutes Community (tags)
A WWII Era Iron Foundry spews Ton of Particulates and Toxic Gases Just Upwind of the Rio Vista School and Headstart Program