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 Post subject: Electric Carbon Monoxide Detector
PostPosted: Fri Sep 29, 2006 9:25 am 
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Joined: Thu Sep 21, 2006 1:05 am
Posts: 20
http://www.safelincs.co.uk/section.php?xSec=42&gclid=COjs2Pq8zYcCFUqAQwodr3_qMw

Dont knwo if this would work on CO2 ...


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 Post subject:
PostPosted: Fri Sep 29, 2006 10:00 am 
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Joined: Fri Jul 15, 2005 2:34 pm
Posts: 6872
Location: Within 60 Miles of the Northern Anthracite Field
We use a industrial scientific M40M is msha approved 3 gas detector. around 500 bucks. works great.

chris

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PostPosted: Fri Sep 29, 2006 2:55 pm 
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Joined: Mon Jun 20, 2005 11:33 pm
Posts: 3080
Location: Above the Sterling Hill Mine
These alarms are really house alarms. However, they will not monitor CO2 (carbon dioxide), they monitor CO (carbon monoxide). While it should work and it should tell you when you reach dangerous levels of CO, CO is only generated from the incomplete combustion of fuel. Unless the mine is on fire or there is a fire in the mine, there should be no CO in a mine.

Miner Greg


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PostPosted: Fri Sep 29, 2006 3:22 pm 
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Joined: Tue Jul 05, 2005 2:44 pm
Posts: 385
Location: Hamburg, NJ
I may be mistaken, but I beleive Coal mines have naturally occuring corbon monoxide. No fire needed. Isnt that what Black Damp is? the Coal mineral itself exhales CO it into the surrounding areas naturally.

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 Post subject:
PostPosted: Fri Sep 29, 2006 3:30 pm 
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Joined: Tue Jul 05, 2005 2:44 pm
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Location: Hamburg, NJ
Woops I am wrong. Firedamp or Afterdamp is CO. Dont know where i remember reading that Coal itself slowly leeches CO naturally. Let me know if anyone else has heard this. UGM Miners, Any Ideas?

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 Post subject:
PostPosted: Sat Sep 30, 2006 8:05 am 
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Joined: Fri Jul 15, 2005 2:34 pm
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Location: Within 60 Miles of the Northern Anthracite Field
blackdamp, the mixture of carbon dioxide and nitrogen is released from the decay of organic meterials........ie coal in our case. blackdamp is heavier than oxygen there fore displacing it near the floor first. if in a tunnel blackdamp should be checked for regularly by walking with the flame safety lamp low or holding your oxygen metering device low. slopes are dangerous in blackdamp seasons..... yes there are seasons. since blackdamp sinks it will fill the whole mine up at the bottom of a slope or anywhere along the slope. youll not enter it slowly from the floor up but youll walk right into a high level of it where the mines filled up. we have run across this in many trips. the only time we found CO in a mine was when i "released some" into gregs passport in the diamond drift! :lol:

chris

also watch this video.....

http://www.ironminers.com/mineforum/viewtopic.php?t=840

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