Sludging
Sludging is a very simple well drilling method developed in ancient India but still used extensively in developing countries, where capital is scarce, but manpower abundant. A pipe is moved up and down in a hole filled with water (mud).
Sludging is a very simple well drilling method developed in ancient India but still used extensively in developing countries, where capital is scarce, but manpower abundant. A pipe is moved up and down in a hole filled with water (mud).
Sludging is a very simple well drilling method developed in ancient India but still used extensively in developing countries, where capital is scarce, but manpower abundant. A pipe is moved up and down in a hole filled with water (mud).
Source: Wikipedia "Sludging" · CC BY-SA 4.0
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