"Dodd, Ralph"@en . "Ralph Dodd (c.1756\u201411 April 1822) was a late 18th century British civil engineer primarily known for his attempt to produce the first tunnel underneath the Thames in 1798."@en . "1756Z"^^ . "1822-04-11Z"^^ . "Ralph Dodd"@en . "1822Z"^^ . . . . . . . "Britishcivil engineer" .