Labor Day affair, which occurred in Chicago on May 4, 1886.) Lastly, several countries have chosen neither date for their Labour Day. Beginning in the late 19th century, as the trade union and labor movements grew, different groups of trade unionists chose a variety of days on which to celebrate labor. In the United States, a September holiday called Labor Day was first proposed in the early 1880s. Alternate stories of the event's origination exist. According to one early history of Labor Day, the event originated in connection with a General Assembly of the Knights of Labor convened in New York City
Mines on the first day of the Somme Mines on the first day of the Somme The 19 mines on the first day of the Somme comprised a series of underground explosive charges, secretly planted by British tunnelling units beneath the German front lines on the Western Front during the First World War, ready to be detonated in the morning of Saturday 1 July 1916, the first day of the Battle of the Somme (1 July – 18 November 1916). The joint explosion of these mines ranks among the largest artificial non-nuclear explosions. The tunnelling companies of the Royal Engineers were to make two major contributions to the