Milwr Tunnel
The Incredible Epic of the Milwr Tunnel Wales hides beneath its hills an exceptional industrial heritage. Among these underground treasures, the Milwr Tunnel stands out for its scale and ingenuity.…
Strategic bunkers: History and functions of military underground shelters
Introduction to strategic bunkers Strategic bunkers are fortified underground structures designed to protect essential personnel, equipment, and operations in the event of conflict or disaster. These often secret facilities play…
Passive defense shelters
Passive defense shelters are structures designed to provide protection against external hazards such as bombing and nuclear, biological or chemical threats. Their primary function is to provide a safe haven…
Basement consolidation
Consolidation methods Consolidations are used to stabilize voids and allow the construction of surface structures. They can be carried out using different techniques, such as hedges and tamping, arm pillars,…
Extraction of underground quarry materials
The word "quarry" comes from the Latin quadrus which is a shortening of quadrus lapis, which term means "square stone", in other words "cut stone". Unlike mines where so-called strategic…
Transporting stone in underground quarries
Evolution of underground transport modes Stones extracted from underground quarries began to be transported using wooden carts. For a long time, that is, until the 1910s, almost all stone blocks…
