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2 feb 1910 anni - The U.S. Bureau of Mines was created to help reduce accidents in mines.
Aggiunto al nastro di tempo:
19 feb 2018
0
0
313
Coal, Wind, Water, and Solar Energy (1900-Present)
Coal (Blue)
Solar (Green)
Water (Orange)
Wind (Purple)
Data:
2 feb 1910 anni
Adesso
~ 114 years ago
Immagini: