Gotthard tunnels (1872 - 82), the blasting of underwater cliffs in New York’s East River (1876, 1885), and the digging of the Corinth Canal in Greece (1881 - 93).
Gotthard (1872 - 82), peledakan bukit di bawah air di Sungai Timur New York (1876, 1885), dan penggalian Kanal Korintus di Yunani (1881 - 93).