Usually the digestive enzymes stay in one part of the pancreas. But if these enzymes leak into other parts of the pancreas, they can irritate it and cause pain and swelling. This may happen suddenly or over many years. Over time, it can damage and scar the pancreas.
Mustard was made in Dijon with hand-operated grinding mills until the middle of the 19th century, when one of the city's most famous sons, moutardier Maurice Grey, invented a steam-driven machine that could crush the seeds, remove the husks, and grind the remains to a fine powder in one operation.
Phosgene would be responsible for more than three-quarters of the gas fatalities during World War I. A British soldier affected by mustard gas burns. The most notorious chemical weapon of the war was mustard gas, a severe irritant which caused chemical burns on the skin, the eyes and in the airways. Though not as deadly as other compounds, mustard gas probably had more effect as an anti-personnel weapon.