Introduction to Shaft and Decline Access
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Questions and Answers

What factor does not influence the size of the main access development in an underground mine?

  • The tonnes that must be hoisted per day
  • The size of mobile equipment to be used
  • Ventilation requirements
  • The availability of explosives on the market (correct)

    • What type of exploration information can primary underground development openings provide?

  • Data on the climate of the region
  • Information about the surface topography
  • Detailed geotechnical data of the surrounding rock (correct)
  • Information about the local infrastructure available

    • What is the main feature of an underground mine that provides vertical or subvertical access to the underground workings?

  • Portal
  • Adit
  • Decline
  • Shaft (correct)

    • Why does an underground mine usually have at least two independent access systems?

    <p>For safety considerations</p> Signup and view all the answers

    What influences the decision between using a shaft or ramp as the primary access in an underground mine?

    <p>The orebody depth and planned production rate</p> Signup and view all the answers

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