One of the most common methods of extracting minerals that are found deep under the earth surface is the underground mining. This method is normally employed when mineral deposits are too deep to be reached using surface mining technique.
Underground mining has a number of common techniques that are used depending on the nature of the deposit of the mineral and the geological conditions. Room and pillar mining is one of the most conservative processes. In this method miners make a row of rooms leaving the pillars of rock to hold the mine structure.
The other widespread technique is the longwall mining that is commonly applied in coal mining. Longwall mining In this method, a massive machine is used to move through the coal seam, cutting and removing coal and allowing the roof above it to be deposited to fall down in a controlled fashion.
Another significant method of underground mining is cut and fill mining. This is a process where the ore is extracted in a particular part of the mine and the remaining part is filled with garbage or sand. This assists in stabilization of the mine structure and miners have access in deep areas.
The underground mining process will need exclusive mining tools like drilling machines, loaders, conveyor belts and ventilations. The ventilation is the main concern in underground mines as it is used to eliminate the harmful gases and presents fresh air to the workers.
Underground mining is also associated with safety. Mining firms should also use stringent safety measures to ensure that workers are not exposed to hazardous activities like rock falls, gases leakages, equipment mishaps and so on.
Even with the difficulties, underground mining is a crucial means of tapping precious mining deposits. Technological increase is still enhancing the efficiency and safety levels of underground mining activities in different parts of the world.