1947 - United Mine Workers withdraw from AFL
https://m.youtube.com/watch?v=5ZGhhiRE5ac
https://m.youtube.com/watch?v=lCrL-MmVouc
1890 - the single-arch Victoria Avenue Bridge opens in Cambridge, England.
1987 - the Tsing Yi North Bridge opens in Hong Kong.
https://m.youtube.com/watch?v=lY3oGlgZRgI
https://m.youtube.com/watch?v=DHk94YoC95k
https://m.youtube.com/watch?v=qQQZjNlY1Yc
https://m.youtube.com/watch?v=JyVbjDsric4
https://m.youtube.com/watch?v=EYWc5FhHd7g