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| | NASD: Oxides Of Nitrogen ("Silo Gas") |
 | | Because NOx are heavier than air, they will roll down the silo chute like water when a chute door at an appropriate level has been left open, and concentrate in the feed room between the barn and silo, at the base of the silo, or in the chute itself. |
 | | Silo filler's disease may be confused with a number of illnesses including hypersensitivity pneumonitis or a toxic organic dust syndrome (TODS, see Unit 2), which result from exposure to moldy hay or grain; exposure to mold typically occurs while uncapping the silo, removing moldy silage from the top silo layers well after the harvest season. |
 | | Certain silos (horizontal silos such as stack, bunker, or trench units, or airtight units) decrease the danger of silo gas exposure; however, conventional upright silos are still the most commonly used units. |
| www.cdc.gov /nasd/docs/d001501-d001600/d001505/d001505.html (2113 words) |
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