Mehtar Hussain and Mushtaq Ahmed from Assam built a bamboo windmill for around $100 to pump water from a small padi field. The invention has now been adopted by Gujarati salt workers, who are some of the poorest people in the state, to pump brine water. Petrol-powered pumps consume huge amounts of fuel, at a cost of around $1,000 each year. The wind-powered pump runs at a fraction of the cost.
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