events, First World War / WWI, Western Front, British gas mines, German dud, chemical warfare, 20th century, historic, historical, poison, toxic, 1910s,

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Photo credit: © INTERFOTO / History / Alamy / Afripics
License: Licensed
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Keywords: 1910s, 20th, british, century, chemical, events, front, gas, historic, historical, mines, poison, toxic, war, warfare, western, world, wwi