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1. Open cast mining in which large pits are dug to excavate the ores lying at shallow depths beneath the surface of the earth. Deep shaft mining in which deep holes are made to reach the ore lying at great depth beneath the crust. ...
2.Globally, 2.2 billion tonnes (bnt) of iron ore was produced in 2017 - an increase of 3.2% compared to the previous year. Australia, Brazil, India, China, and Russia were the world's five largest producers of iron ore, collectively accounting for 87.5% of global iron ore production.
3.In India, Sundaram Clayton Limited, which is one of the largest suppliers of die-castings in automobile sector has started trial production of magnesium die-casting in 2011 with a initial production capacity of 1000 tonnes per annum.
4.In India, Hindalco manufactures aluminium rolled products at plants located in Odisha, West Bengal, Nagpur in Maharashtra, Renukoot in Uttar Pradesh, and Taloja near Mumbai in Maharashtra. Its extrusion plants are located at Renukoot, Uttar Pradesh and Alupuram, Kerala.
5.Petroleum is formed when large quantities of dead organisms–primarily zooplankton and algae–underneath sedimentary rock are subjected to intense heat and pressure.
6.Many by-products are extracted while processing of natural gas like propane, ethane, butane, carbon dioxide, nitrogen etc, which can be further used. Description: Natural gas is mainly used as fuel for generating electricity and heat. Natural gas in compressed form is used as fuel for vehicles which is known as CNG.
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