The first uses of what on a large scale in civil engineering were the construction of the Canal du Midi in France (1681), the Erie canal in New York (1825), the Box Tunnel on the railway line between London and Bristol, England (1841), and the Mont Cenis Tunnel between France and Italy (1870)?
Black powder Gun powder 火藥 Nitrous powder Process of corning black powder Blasting powder Black gunpowder Blackpowder Black-powder Serpentine powder The Invention of powder Gun Powder Gunpowder
gunpowder invention of powder 火藥 gun powder nitrous powder blasting powder process of corning black powder serpentine powder black gunpowder black powder blackpowder
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Gunpowder