Mine Fires and Hazards
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Questions and Answers

Which of the following is NOT a direct loss incurred due to mine fires?

  • Recovery of sealed-off areas
  • Fall in production (correct)
  • Cost of fire-fighting
  • Loss of coal reserves

    • What are the four conditions that must be fulfilled for a fire to break out?

  • Sufficient oxygen, a source of ignition, time for ignition, and a fall in production
  • Sufficient quantity of combustible material, sufficient oxygen, a source of ignition, and a fall in production
  • Sufficient oxygen, a source of ignition, time for ignition, and a sealed-off area
  • Sufficient quantity of combustible material, sufficient oxygen, a source of ignition, and time for ignition (correct)

    • According to Indian Standards Specifications, how are fires classified?

  • Class 'C'
  • Class 'D'
  • Class 'A' (correct)
  • Class 'B'

    • What are the indirect losses incurred due to mine fires?

    <p>Fall in productivity and increase of cost (C)</p> Signup and view all the answers

    What does the presence of combustible material, sufficient oxygen, and a source of ignition lead to?

    <p>Mine fires (D)</p> Signup and view all the answers

    Which of the following is NOT an indirect loss incurred due to mine fires?

    <p>Loss of coal reserves (D)</p> Signup and view all the answers

    What are the four conditions that must be fulfilled for a fire to break out?

    <p>Source of ignition, presence of combustible material, time required for ignition, and sufficient quantity of oxygen (A)</p> Signup and view all the answers

    According to Indian Standards Specifications, how are fires classified?

    <p>Class 'A' (D)</p> Signup and view all the answers

    What is an ever-present hazard in mines that endangers the lives of miners and causes economic losses?

    <p>Mine fires (A)</p> Signup and view all the answers

    Which type of losses incurred due to mine fires are usually higher than the direct losses?

    <p>Indirect losses (A)</p> Signup and view all the answers

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