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Question
Mining is dependent on the extraction of naturally occurring minerals. Explain.
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Solution 1
- Mining is one of the oldest economic activities of man.
- Man cannot produce minerals naturally found in the earth's crust.
- This activity solely depends on the presence of minerals.
- It also depends on the geology of the region, value of minerals, quality of minerals, capital investments, technology and availability of skilled labour, etc.
Solution 2
- Man has been using minerals since ancient times.
- Minerals have been used for making weapons, tools, jewellery, medicines, utensils, etc.
- The various stages of cultural evolution of man are also related to the use of minerals.
- At the end of the Stone Age, man developed skills of using minerals. Various periods like the Copper Age, Bronze Age, Iron Age, Atomic Age, respectively were delineated accordingly.
- Man’s progressive development can be attributed to the exploitation of minerals.
- He has even started exploiting the mineral oil and natural gas reserves from the sea and ocean beds too.
- Man cannot manufacture the minerals that are found naturally in the earth’s crust. The geology of the region and the value of the minerals are some affecting factors of mining.
- This activity depends solely on the presence of minerals. Therefore, the distribution of minerals is highly uneven in the world.
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Agriculture and Mining
Explain any three features of the underground mining method used in different countries of the world.
Depending on the mode of occurrence and the nature of the ore, mining is of two types: Surface and underground mining. Surface mining is also known as open cast mining is the easiest and the cheapest way of mining minerals that occur close to the surface, overhead costs such as safety precautions and equipment are relatively low in this method. The output is both large and rapid. When the ore lies deep below the surface, an underground mining method (shaft method) has to be used. In this method, vertical shafts have to be sunk, from where underground galleries radiate to reach the minerals. Minerals are extracted and transported to the surface through these passages. It requires specially designed lifts, drills, haulage, vehicles, ventilation system for safe and efficient movement of people and materials. This method is risky. Poisonous gages, fires, floods, and cave-in bad to fatal accidents. The developed economies are retreating from mining, processing, and refining stages of production due to high labour costs, while the developing countries with large labour forces and striving for a higher standard of living are becoming more important. Several countries of Africa and a few of South America and Asia have over fifty percent of the earnings from minerals alone.
Developed economies are retreating from mining, processing, and refinery stages of production because ______
Depending on the mode of occurrence and the nature of the ore, mining is of two types: Surface and underground mining. Surface mining is also known as open cast mining is the easiest and the cheapest way of mining minerals that occur close to the surface, overhead costs such as safety precautions and equipment are relatively low in this method. The output is both large and rapid. When the ore lies deep below the surface, an underground mining method (shaft method) has to be used. In this method, vertical shafts have to be sunk, from where underground galleries radiate to reach the minerals. Minerals are extracted and transported to the surface through these passages. It requires specially designed lifts, drills, haulage, vehicles, ventilation system for safe and efficient movement of people and materials. This method is risky. Poisonous gages, fires, floods, and cave-in bad to fatal accidents. The developed economies are retreating from mining, processing, and refining stages of production due to high labour costs, while the developing countries with large labour forces and striving for a higher standard of living are becoming more important. Several countries of Africa and a few of South America and Asia have over fifty percent of the earnings from minerals alone.
For which reasons fear of fatal accidents remain in underground mining?
Depending on the mode of occurrence and the nature of the ore, mining is of two types: Surface and underground mining. Surface mining is also known as open cast mining is the easiest and the cheapest way of mining minerals that occur close to the surface, overhead costs such as safety precautions and equipment are relatively low in this method. The output is both large and rapid. When the ore lies deep below the surface, an underground mining method (shaft method) has to be used. In this method, vertical shafts have to be sunk, from where underground galleries radiate to reach the minerals. Minerals are extracted and transported to the surface through these passages. It requires specially designed lifts, drills, haulage, vehicles, ventilation system for safe and efficient movement of people and materials. This method is risky. Poisonous gages, fires, floods, and cave-in bad to fatal accidents. The developed economies are retreating from mining, processing, and refining stages of production due to high labour costs, while the developing countries with large labour forces and striving for a higher standard of living are becoming more important. Several countries of Africa and a few of South America and Asia have over fifty percent of the earnings from minerals alone.
Developing economies are increasing mining, processing, and refinery stages of production because of ______
"Future of shifting cultivation is bleak". Which of the following statement is/are correct in context of this?
Which of the following is an economic factor determining the profitability of mining activities?
Read the following statements regarding open-cast mining and choose the correct option:
- This is the cheapest way of mining.
- The output is in large quantity.
- It requires specially designed lifts, drills.
- It requires special ventilation system.
