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Rockcrete
From Warhammer 40k - Lexicanum
Rockcrete is a type of building material used by the Imperium which is cheap and easy to produce. Native stone is ground up and mixed with binding agents to create thick, heavy slabs used in the construction of walls and flooring.[1]
See also
Sources
- 1: Dark Heresy: The Inquisitor's Handbook, pg. 172