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sub-level

[suhb-lev-uh l]
noun Mining.
  1. a drift, dug through ore, into which overlying material, especially from an upper layer of ore, is caved.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for sub-level

Historical Examples of sub-level

  • He left the cage at the sub-level just above the last level.

    The Iron Boys in the Mines

    James R. Mears

  • They knew the place as well as though the sub-level had been ablaze with light.

  • The men picked up the lad and bore him through the sub-level.

  • Come on up to the sub-level; we will begin our investigation there.

  • Whoever did the job, entered the skip shaft from sub-level seventeen.