Underground Mining

Underground Mining is the extraction of Ore or Minerals from the earth crust below the ground by the means of shaft or incline.
Underground Mining in India is practiced in Rajasthan and Singbhum Copper areas, Diamond Mines of Banganapalli and Karnool, Uranium mines in Jaduguda – Jarkhand, Coal Mines in Andhra Pradesh etc.
Underground miner works under conditions which are safe and healthy for his body. In underground mines the humidity , temperatures and the dust content of the air in the mine should also be within certain limits. This is achieved by proper ventilation of underground mine working by continuous supply of fresh surface air. The mine air should contain not less than 19% of Oxygen and 0.5% of Carbon-di-oxide. In Underground to dilute the noxious and inflammable gases such as Carbon monoxide, Methane etc Ventilation is necessary. Ventilation also keeps Underground mine temperature in control, the wet bulb temperature in development faces should not exceed 33.5oC.