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Jetting - general

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==Suitable conditions==

[[Image:Manually rotated jetting.jpg|thumb|right|250px200px|Manually rotated jetting]][[Image:Typical drill bit.jpg|thumb|right|250px200px|Typical drill bit]]

Suitable for weakly cohesive sands and silts. Manual jetting is generally used up to depths of 35 meters.

==Construction, operations and maintenance==

[[Image:Jetting.jpg|thumb|right|250px200px|Jetting. Credit: WEDC.]]

All drilling equipment, except the motor pump and some valves, is locally produced.

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