Eli5: How do the dig really deep holes that arent wide enough to take an excavator into the hole?

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Theres a scuba diving center I drive by while working that started building a pool to practice in. The pool is only about a 20ft x 20ft square however it has to be at least 20 ft deep (im guessing, but if its to practice scuba diving its pretty deep.)

I was wondering how they dig a hole that deep when the hole is not wide enough to take an excavator into like im used to seeing.

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3 Answers

Anonymous 0 Comments

They use whats called a bucket excavator, it looks a bit like a combination between a crane and a claw machine.

Theyre generally small, and can be used to dig out deep holes without need as much space as a traditional sytle excavator

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