excavation machine
121Ouvrage Haut-Poirier — Part of Maginot Line Northeast France …
122Ouvrage Le Lavoir — Part of Maginot Line, Alpine Line Southeast France …
123Ouvrage Pas du Roc — Part of Maginot Line, Alpine Line Southeast France …
124Ouvrage Saint Ours Haut — Part of Maginot Line, Alpine Line Meyronnes, Southeast France …
125Ouvrage Restefond — Part of Maginot Line, Alpine Line Southeast France …
126Ouvrage Barbonnet — Ouvrage Barbonnet, Fort Suchet Part of Maginot Line, Alpine Line Southeast France …
127trench warfare — combat in which each side occupies a system of protective trenches. [1915 20] * * * Warfare in which the opposing sides attack, counterattack, and defend from sets of trenches dug into the ground. It was developed by Sébastien Le Prestre de… …
128Technological and industrial history of Canada — The technological and industrial history of Canada encompasses the country s development in the areas of transportation, communication, energy, materials, public works, public services (health care), domestic/consumer and defense technologies.… …