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canary in a coal mine Options
Daemon
Posted: Thursday, September 12, 2019 12:00:00 AM
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canary in a coal mine

Something or someone who, due to sensitivity to his, her, or its surroundings, acts as an indicator and early warning of possible adverse conditions or danger. Refers to the former practice of taking caged canaries into coal mines. The birds would die if methane gas became present and thereby alert miners to the danger. More...

KSPavan
Posted: Thursday, September 12, 2019 1:58:23 AM

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canary in a coal mine — Something or someone who, due to sensitivity to his, her, or its surroundings, acts as an indicator and early warning of possible adverse conditions or danger. Refers to the former practice of taking caged canaries into coal mines. The birds would die if methane gas became present and thereby alert miners to the danger.
Adyl Mouhei
Posted: Thursday, September 12, 2019 8:04:21 AM

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A canary in a coal mine is an advanced warning of some danger. The metaphor originates from the times when miners used to carry caged canaries while at work; if there was any methane or carbon monoxide in the mine, the canary would die before the levels of the gas reached those hazardous to humans.
thar
Posted: Thursday, September 12, 2019 10:11:34 AM

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You didn't wait till they died!


It is not so long ago. 1986 phased out in the UK.


Quote:
1986: Coal mine canaries made redundant
More than 200 canary birds are being phased out of Britain's mining pits, according to new plans by the government.
Modern technology is being favoured over the long-serving yellow feathered friend of the miner in detecting harmful gases which may be present underground.

New electronic detectors will replace the bird because they are said to be cheaper in the long run and more effective in indicating the presence of pollutants in the air otherwise unnoticed by miners.

The gas detectors will be hand-held and carry a digital reading which appears on a screen alerting miners to the extent of the gases.

The birds' replacement will be introduced gradually next year.

Miners are said to be saddened by the latest set of redundancies in their industry but do not intend to dispute the decision.

The removal of the canaries will end a mining tradition in Britain dating back to 1911, since when two canaries have been employed by each pit.

Signs of distress

They are so ingrained in the culture miners report whistling to the birds and coaxing them as they worked, treating them as pets.

The canary is particularly sensitive to toxic gases such as carbon monoxide which is colourless, odourless and tasteless.

This gas could easily form underground during a mine fire or after an explosion.

Following a mine fire or explosion, mine rescuers would descend into the mine, carrying a canary in a small wooden or metal cage.

Any sign of distress from the canary was a clear signal the conditions underground were unsafe and miners should be evacuated from the pit and the mineshafts made safer.
Emel Rapchan
Posted: Thursday, September 12, 2019 11:49:46 AM

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Emel Rapchan
Posted: Thursday, September 12, 2019 11:54:17 AM

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taurine
Posted: Thursday, September 12, 2019 4:11:26 PM

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The question at issue in these proceedings is whether the Defendant - Canary Wharf Group Plc - is entitled to recover from its insurers, the Claimants, in respect of loss said to have been suffered as a result.
monamagda
Posted: Thursday, September 12, 2019 7:49:21 PM

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