GSI and UPSC aspirants, answer the following questions

GSI – A vertical and tabular copper ore body having an average thickness of 2.86 m is being mined by developing levels at 30 m interval. The adjacent levels are connected by raise/winze at an interval of 40 m. Considering specific gravity of ore to be 2.94, calculate tonnage of ore in a block bounded by two consecutive levels and raises/winzes. If the average ore grade is 3.22 wt.% Cu, calculate the metal content of the block.

UPSC – What do you understand by Landslides? Discuss briefly various types of landslides. Comment upon causes and remedial measures of landslides.

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