The Bodovalle mine was the largest open-pit siderite mine in the Biscayan mining basin. It was exploited in open pit until 1885. From that date, the mineral extraction was carried […]
Execution of 1,045 meters, of which 410 meters correspond to the execution of central galleries of 30 m2, with widening areas to form caverns of 200 meters in length and […]
The length of the Aduna Tunnel is 4690 m. Nortúnel excavated from the mouth on the Andoain side a mine tunnel with a length of 1479 m, with an excavation […]
Tunnel with a length of 308.91 m with an excavation section of some 23 m². The excavation took place using mechanical methods (ITC) in conglomerate and clay loam.
A tunnel 1500 m in length and with a 16 m² section to install a collector. Excavated using blasting and mechanical means on highly karstified limestone.
Innovative system in operation of quarries to eliminate waste of blasting materials on the front part of the quarry. It prevents the formation of dust and reduces the generation of […]
