https://www.warhistoryonline.com/war-articles/wwi-artillery-shell-collectors-a-continuing-problem-for-eurostar.html
WWI Artillery Shell Collectors, A Continuing Problem for Eurostar | War History Online
May 14, 2015 - Monday, May 11, saw the evacuation of Gare du Nord due to one reason - a passenger decided to carry a disarmed artillery shell aboard a Eurostar train. -
wwi artillery