A Well, Windmill and Washplant

The sapphire washplant
- Before the machinery used today, miners used simple hand tools – a pick, a shovel and a hand sieve to separate the stones.
- Some miners sank shafts to locate the gravel layer called wash, which was systematically removed by tunnelling and hoisted in a bucket to the surface.
- The washplant is a small powered piece of equipment designed to help process the excavated material in search of gems. Once hoisted to the surface, the excavated material is first washed and spun through fine mesh to remove small rocks and sand. It is next shaken through layers of mesh. Sapphires are heavier than most other rocks so gravity pulls sapphires to the bottom layer. This concentrated bottom layer is then sorted by hand to find the gems.
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