CBSE Class 10 Answered
What is the difference between an open pit mine, a quarry and an underground mine with shafts?
Asked by pdcavita | 24 Nov, 2017, 04:05: PM
Expert Answer
Open pit mining |
Quarry |
Underground mining with shaft |
Done for those minerals which lie close to the surface of the earth |
Used for mining minerals at shallow depths |
Minerals which lie at great depths below the surface of the earth |
Used where commercially useful minerals are found near the surface. |
Used for extracting building materials like stone and limestone. |
Used where the minerals occurs as veins in hard rock deep below the surface of the earth |
Extracted using Earth moving machinery |
Extracted using Earth moving machinery |
Extracted using elevators which can carry people and mineral extracting equipment deep into areas where minerals are available |
Answered by Social Science Expert | 25 Nov, 2017, 03:51: PM
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