Mine Gases
lead acetate paper
A simple test may be made to detect Hydrogen Sulfide with___________ , which turns a shiny brown
0.02%
Carbon Monoxide percent concentration in which a man suffered headache and become disabled
0.1 to 0.15%
Hydrogen Sulfide percent concentration the proves fatal
4.1 to 75%.
Hydrogen's explosive range when mixed with air is from
Hydrogen Sulfide
It has an offensive odor.
Black Damp
It is a mixture of carbon dioxide and nitrogen of variable composition.
Carbon Dioxide
It is a product of complete combustion and is given off by men and animals, by burning lamps, by mine fires, by decaying timbers and during the explosion of powder.
Carbon Monoxide
It is also a product of mine explosions and is given off by a gasoline motors and during the detonation of negatively oxygen-balanced exposives
Carbon Dioxide
It is colorless and odourless but has a distinctly acid taste.
Carbon Monoxide
It is colorless, odourless and extremely poisonous.
marsh gas
It is commonly called Methane.
Hydrogen
It is formed from gas or coal dust explosions, in the flumes from explosives, and by acid water acing on the metal.
Methane
It is odorless, colorless and tasteless, and burns with a pale blue flame.
Nitrogen Dioxide
It is produced by the incomplete detonation of some explosives.
Hydrogen Sulfide
It is produced in some mineral springs and in mines during blasting and an occasional constituent of feeders of gas and gases resulting from a mine explosion.
Oxygen
It is removed from the air by the breathing of men and animals, by the burning of lamps, by the decay of timber and by mine cars.
Nitrogen Dioxide
It is the most dangerous of mine gases
Black Damp
It will extinguish lights if it is present in sufficient quantity to lower the oxygen content of the air below the point at which it will support combustion
potassium iodide and starch
Nitrogen Dioxide can be detected by paper soaked in a solution of _________________
18%
Percent Concentration of Carbon Dioxide where suffocation and death occur
13%
Percent Concentration of Oxygen where breathing becomes very labored and life is in danger.
Hydrogen
Specific gravity is 0.06936.
Methane
Specific gravity is 0.559.
Carbon Monoxide
Specific gravity is 0.967
Oxygen
Specific gravity is 1.1056
Hydrogen Sulfide
Specific gravity is 1.1912.
Carbon Dioxide
Specific gravity is 1.529
Nitrogen Dioxide
Specific gravity is 1.5895
5.0 to 13.9%
The explosive range in air of methane
After Damp
This term is applied to the gases present in a mine after an explosion of methane or coal dust
Carmine
are used in some mines because they are much susceptible to carbon monoxide than men, and if carried into an atmosphere containing a dangerous percentage of the gas. They will fall from their perch before men are affected