Workers during natural gas evaporation, reduction and skimming process at salt mines in Tze-Kung, China.
Tze-Kung China Date:1944 Duration:4 min 40 sec Sound:NO SOUND
Workers at salt mines in Tze-Kung, China. Natural gas from the wells is used for evaporation process. The workers move carrying wrought iron basins. Liquid poured into the wrought iron basins. The liquid in the wrought iron basins boiled during reduction process. Soy bean juice is added to remove impurities. The scum is skimmed off and evaporated to form salt. A map showing China. Salt is poured over the map. Horses carrying baggages moving on a road. A hand cart loaded with sacks is pushed by men on a street. Several men moving about on the road. Boats anchored at the bank of a water body. A number of people on the bank. Aerial views of the boats on the bank.
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