1923- US Steel Corp initiates 8-hour work day.
1971- Ground breaks on the construction of the Mercedes-Benz Superdome.
1860- Virginia City, Nevada has the US’s first successful silver mill.
1903- An electric fire on the Paris Metro kills 84.
1870- After 3 years of construction, the Melbourne Town Hall in Australia opens.
1996- the patent for the articulated piston is filed.
2004- the Rion-Antirion Bridge opens across the Gulf of Corinth in Greece.
1856- The Great Bell is cast in the Great Clock of Westminster.
1914- The US’s first electric traffic light is installed in Cleveland, Ohio.
1830- Plans for the city of Chicago are laid out.