Geology describes the structure of the Earth on and beneath its surface and the processes that have shaped that structure. Geologists use a wide variety of methods to understand the Earth's structure and evolution, including fieldwork, rock description, geophysical techniques, chemical analysis, physical experiments, and numerical modeling. In practical terms, geology is important for mineral and hydrocarbon exploration and exploitation. In the mining industry, it plays an important role in preparing pit design, conducting exploration to know the quality & quality of different grades of ore present in orebody, preparation of long term, medium term & short term excavation plans to ensure the quality of the product as per customer requirement.