Miners used canaries in cages to detect hazardous atmospheres in the mines because canaries are more sensitive to mining gasses than people are. If the canary collapsed, that meant that there were poisonous gasses in the tunnel, and the miners would evacuate until the mine had been ventilated and was safe again.
Canaries were used to test for the presence of "Dead Air"-(Atmosphere deficient in Oxygen). If the canary died, the miners had to evacuate immediately.
...if the bird died, the miners knew to GET OUT because of bad air...
They were used to detect pockets of deadly gas..They would die before the gas was intense enough to affect the miners.
detect gas
Canaries were used in mines to detect deadly gas.
The Davy lamp's flame went out when miners got to a spot where there was dangerous gas. Previously, canaries were used to do these jobs.
I can give you several sentences.Canaries can be brown or yellow.The canaries sang cheerfully.Wild canaries usually can't be kept as pets.
yes, this is violent and sad but people would put canaries in mines and when they stopped singing all the miners had to be evacuated because the air id poisonous and then the canary dies.
The possessive noun for the singular word canary is canary's, e.g. "The canary's seed dish".The possessive plural form for many canaries would be canaries', e.g. "The canaries' seed dishes".
tye miners lived in tents
Canaries can serve as a form of alarm, signalling impure air and high carbon monoxide, because they need purer air than humans. When they appear weak or sick, it means that there's too much carbon monoxide. They were brought into coal mines for this reason.
DYNAMITE!!!!!!!!
canaries do have feathers and they have lots of different colors canaries are a type of a bird
bro the miners used nothing bro nothing bro
They had to use a Pickaxe
they don't