https://bostonequator.com/2022/04/14/understanding-well-drilling/

For large quantities in water the drill needs to be moved. The bedrock is located at the bottom. The overburden consists of clay, sand gravel boulders, clay, and gravel. There is water in it However, the bulk of the water is at the bedrock level. Drilling will typically employ a rotary-drilling machine it is a huge. It uses diesel and hydraulic power to fracture the surface it’s drilling into.
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