underhand cut-and-fill mining

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July 14, 2026

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Underhand cut-and-fill mining is an underground extraction method where ore is removed in horizontal slices, progressing from the top downward. After each slice is mined, the resulting void is filled, typically with waste material from mineral processing. This fill material then serves as a stable roof for the subsequent slice. To ensure structural integrity for working beneath the fill, cement is added to it. This method offers flexibility and can be adapted to various ore body shapes and ground conditions.1

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mining
Cut-and-fill mining
In underhand cut-and-fill mining, work progresses from the top downward. In this latter case cement must be added to the fill to form a strong roof under which to work.
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In underhand cut-and-fill mining, work progresses from the top downward. In this latter case cement must be added to the fill to form a strong roof under which to work.
Read More