Page 30 - Demo

• In 1972
On January 7th, 1972, Calcium Chloride powder was successfully used in a trial to disperse fogs and clouds in the area of Chiang Mai and Mae Hong Son Provinces. The experiences gained from those trials were later adapted to be used in Royal Rainmaking operations. Furthermore, later in the year, concentrated Urea solution was tested in a Royal Rainmaking operation. It was used to attack clouds and force them to rain. Therefore, the chemicals used in the Royal Rainmaking operation in that year included:
- Sodium Chloride powder or Royal Rain salt flour (Formula 1) - Dry Ice (Formula 3)
- Calcium Chloride powder (Formula 6)
- concentrated Urea solution
• In 1973
Urea powder was tested in operations and was later used to replace concentrated Urea solution (due to technical problems in spraying the solution). When Urea was applied together with other chemicals, it was proven to be more efficient. At the end of 1973, Calcium Carbide (CaC) powder was tested in the step of “triggering”. Therefore, the chemicals used in operations in 1973 were the same as in 1972, but the use of concentrated Urea solution was changed to Urea powder (Formula 4) instead.
• From 1974 to 1976
The chemicals used in Royal Rainmaking operations during these years were:
- Sodium Chloride powder or Royal Rain salt flour (Formula 1)
- Dry Ice (Formula 3)
- Urea powder/concentrated Urea solution (Formula 4)
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