Ok this thread concerns me A lot !!! I do not want to see or hear about anyone getting sick or dying in a well/. Please do this go get professional device. Go to a fire Department rescue squad and ASK THERE ADVICE!!! I lost a friend in a corn silo bin. he was over came by gasses.
Some other options I bought a underwater camera that came with a monitor for around $100 I used this in trying to find a lost shotgun.(no luck) Also if you have a Deus you can tape the coil to a pole and extend the the underwater coil attachment kit and you can scan the bottom from above.
PLEASE ASK A RESCUE SQUAD ABOUT YOUR OPTIONS !!!
Carbon dioxide causes deaths in unused wells”
B. Kolappan
CHENNAI, April 25, 2013 02:25 IST
Updated: April 25, 2013 02:25 IST
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Deaths that occur when workers enter unused wells or tanks to clean them are not due to poisonous gases, as is widely believed, but because of carbon dioxide which is present at the bottom, says forensic expert P. Chandrasekaran.
Such deaths can be avoided by adopting simple measures like agitating the wells before entering them.
On Monday, two workers died of asphyxiation when the entered a tank in the city to clean it.
“Deaths in unused wells are common during summer. The failure to take simple precautionary measures is the cause for these deaths,” said Mr Chandrasekaran, a former director of the Forensic Sciences Department. He has several breakthroughs to his credit in his career, including the reconstruction of the belt bomb used by the suicide bomber in the Rajiv Gandhi assassination case.
Mr Chandrasekaran told
The Hindu that he had investigated many deaths in wells and the culprit was not poisonous gases, but carbon dioxide, whose presence depleted oxygen and eventually caused asphyxiation.
“Organic materials deposit at the bottom of unused wells. Whey they start decaying, they release carbon monoxide. It is converted into carbon dioxide after it reacts with oxygen. Since carbon dioxide has high density, it stays at the bottom and inner layers of the wells and tanks and replaces the oxygen present there. When a worker enters the well to clean it, he dies only because there is no oxygen at the bottom,” he explained.