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GATE 2025 MN – Question 12

Mining Methods and Machinery · Mining Methods · 1 mark · Multiple choice

A steeply dipping metalliferous deposit is not susceptible to spontaneous heating. Broken ore provides the working platform in the stope. Identify the method.

  1. Room and pillar
  2. Sublevel stoping
  3. Block caving
  4. Shrinkage stoping

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Show answer and explanation

Correct answer: (D) Shrinkage stoping

Explanation

Shrinkage stoping retains much of the blasted ore temporarily as a working platform, withdrawing enough to allow for swell. The steep dip helps later gravity discharge, and heating-resistant ore is important because broken ore remains stored. Thus D.

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