Canary
Canary
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.
The type of dangerous they had were such as factory workers, chimney sweeps, coal miners and so on.
Rockey soil/long cold miners make farming hard
Canaries were used in mines to detect deadly gas.
Miners were individuals who worked in mines to extract valuable minerals and resources such as coal, gold, and silver. Their lives were often physically demanding, dangerous, and characterized by long hours spent underground in harsh conditions. Mining communities were close-knit, with miners developing a strong sense of camaraderie and solidarity due to the dangerous nature of their work.
They are found in underground mines. Emeralds are hard to find and the miners have a tough and dangerous job.
False.
They don't do this any more as there are electronic detectors now. Birds or any small creature will be affected by carbon monoxide just as humans. The birds were used because they sang. When they could not be heard, the miners checked them. If they were dead, the miners got out of the mine as fast as possible.
Mining is a bad thing because it creates poulotion and it is dangerous 26 miners died 20 years ago
Labor unions put pressure on employers and the government to improve working conditions for coal miners. Technology made it possible for machines to do some of the tasks that were dangerous for humans.
Mining is a bad thing because it creates poulotion and it is dangerous 26 miners died 20 years ago