Would not casting a giant cube of obisidian before SQUASHING THEM TO BITS work?
This calls for SCIENCE!
Project: Stone Hammer Prototype
Abstract:
While the minerals found at the deepest layers of the world have always been much desired by dwarven industry, they have in many cases proven costly to obtain. Even when the direct wrath of those found below can be avoided, the time dilation effect caused by their attention is still enough to render the zone uninhabitable. This project examines potential plans to recover the valuable ores while maintaining a safe, viable habitat.
Methodology:
Due to the difficulty with working at the depths, this first experimentation will be performed by using the upper caverns as an analogy to the so called 'hell' region. We will examine a method of breaching the caverns in practical terms, without breaching them in actuality.
An expedition was mounted to Dorenshorast for the purposes of this experiment.
Here, an exploratory shaft was sunk to the first cavern layer below. Those repeating the experiment should note how breaching the cavern is a momentous event.
By utilizing dwarven time distortion technology (brand 'savescum(tm)') the information so far found was returned to the expedition at the start of spring, so that, in effect, the site could act as its own control group.
At this point, usung the knowledge from the first expedition, a large rock piller was constructed just above the first cavern layer. This was then dropped through the cavern layer, in such a way that the column would fill the gap it made entering the layer in an airtight manner.
This at first seemed successful- a column was created in the cavern layer, without the cavern actually being breached.
However, when miners were sent to dig down through the column, the cavern breach event was again noted, despite no actual contact with the cavern itself being made.
Conclusion:
While there is a faint possibility this technique may still be of use in the lower layers, it cannot be recommended, as the triggering of the breach event is likely to be enough to attract the time distortions associated with resealed breaches.