Rosalie B. wrote:
> jlp20@... wrote:
>
>
>>Latest is the three men killed were common crew and not the doctors who
>>responded. In total, 20 crewmembers were treated at several hospitals
>>in the area. Per the fire department, it was Hydrogen Sulfide gas that
>>caused the deaths. Sorry, I don't know if Hydrogen Sulfide and Methane
>>are the same.
>>
>
> That makes a little more sense.
>
> Hydrogen sulfide (H2S rotten egg smell) is not the same as methane
> (CH4). .Hydrogen sulfide is a colorless, flammable, poisonous gas.
> .Natural sources of hydrogen sulfide are coal pits, volcanic gases,
> natural gas wells, sulfur springs, and decaying organic matter which
> contains sulfur (i.e. sewage)
>
> Also found in car exhaust, but carbon monoxide will probably get you
> first..
>
> Rotting manure produces hydrogen sulfide (H2S), methane (CH4), ammonia
> (NH3) and carbon dioxide (CO2). H2S is the most dangerous. The hazard
> increases if gases concentrate or build up in a confined space (which
> the prop area where the workers were working would be), or are
> suddenly released in a work environment
>
> Collapse, coma and death from respiratory failure may come within a
> few seconds after one or two inspirations, at high levels
> (concentrations of 1000 to 2000 parts per million).
>
> Concentrations of 100 to 200 parts per million for one to eight hours
> may cause sleeplessness, blurred vision, hemorrhage and death. Lower
> concentrations may irritate the eyes, nose and throat (5 to 50 parts
> per million). Following an exposure there may be headaches, dizziness,
> and nausea.
>
> Hydrogen sulfide also has the sneaky ability to make your olfactory
> organ (nose) suffer fatigue. This means that at low levels you can
> smell it, but as the exposure goes on, you will stop smelling it
> because of olfactory fatigue. So if you smell HS2, and then stop
> smelling - leave immediately.
>
>
>>The report also stated that the Coast Guard believed that Monarch would
>>be out to sea tomorrow at 6 AM at the earliest, but may be longer due
>>to the investigation and repairs...
>
>
> grandma Rosalie
You are correct Grandma. HS2 is also one of the primary dangers to
sewer workers. And it's heavier than air, so it sinks. Methane,
contrary to rumor, is lighter than air.
How B
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