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A few buckets more — reducing sand-invasion and siltation in Angola
In very soft (sandy) aquifer formations, drilled boreholes are often susceptible to fine media ingress. This can damage submersible pumps and block handpumps, leading to downtime, expensive rehabilitation procedures or, at worst, total abandoment. Mark Osola explains why a few bucketsof washed river gravel can make all the difference.
In very soft (sandy) aquifer formations, drilled boreholes are often susceptible to fine media ingress. This can damage submersible pumps and block handpumps, leading to downtime, expensive rehabilitation procedures or, at worst, total abandoment. Mark Osola explains why a few buckets
of washed river gravel can make all the difference.
of washed river gravel can make all the difference.
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