Mont Blanc Tunnel - Construction Statistics

Construction Statistics

• Workforce: 5 engineers and 350 workmen worked an estimated grand total of 4,600,000 man-hours to complete the project.
• Explosives: 711 tonnes (700 long tons; 784 short tons) of explosives were used to blast 555,000 cubic metres (19,600,000 cu ft) of rock.
• Energy: 37 million kiloWatt-hour and 2.7 million litres of fuel for trucks and engines.
• Other facts: 771,240 bolts, 6,900 drill rods, and 300 tonnes (300 long tons; 330 short tons) of iron were used to support the vault, 5,000 cubic metres (180,000 cu ft) of formwork for 60,000 tonnes (59,000 long tons; 66,000 short tons) of cement (mixed with 280,000 m3/9,900,000 cu ft of aggregates).