This video shows why you cant always trust all information on the internet, as well as shows the basics of torque wrenches and a few oddball calculations you might run across when building custom things.
Underground mine ventilation. Underground mine ventilation provides a flow of air to the underground workings of a mine of sufficient volume to dilute and remove dust and noxious gases (typically NOx, SO2, methane, CO2 and CO) and to regulate temperature.
MECHANICS OF VENTILATION. Ventilation is defined as the movement of air in and out of the lungs. The. primary function of the lung is to supply the body with oxygen and remove carbon. dioxide, the waste product of metabolism. The total volume of the lung is divided into smaller units of volume. These units.