khanan injeeniyri

praakrutik roop se vidyamaan paristhitiyon mein sthit khanijon ko baahar nikaalne evam unka prasanskaran karne se sambandhit siddhaant, vigyaan, takaneeki ko khanan injeeniyri (Mining engineering) kehte hain.

inhein bhi dekhein

baahari kadiyaaain