Train rails are joined together via a seriously awesome process called exothermic welding, which basically involves lighting off a chemical called Thermite and sending molten iron into a sand mould.
Photo taken on Dec. 2, 2019 shows the welding base for the China-Laos railway project in Vientiane, Laos. On the 44th anniversary of the funding of the Lao People's Democratic Republic on Dec. 2, 2019 ...
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