glory-hole method

excavation process

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June 23, 2026

Quick Summary

The term "glory hole" has several meanings, but in the context of excavation, it refers to a specific type of opening.

Glory Hole in Excavation

A glory hole, also known as a mill hole, is an opencut or funnel-shaped excavation. This type of excavation is formed when soft or broken ore is drawn off through an underground passage. This method is used to extract ore from the ground.12

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tunnels and underground excavations
Shaft raising
…useful in simplifying the so-called glory-hole method, in which the main shaft is sunk by blasting; the muck is then dumped in the central glory hole, previously constructed by a raise borer. The example is based on the construction of a 133-foot-diameter surge shaft above the Angeles penstock tunnel near…
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…useful in simplifying the so-called glory-hole method, in which the main shaft is sunk by blasting; the muck is then dumped in the central glory hole, previously constructed by a raise borer. The example is based on the construction of a 133-foot-diameter surge shaft above the Angeles penstock tunnel near…
Read More