🌊🚪↔️

#sluice #sluice gate #water control #canal lock #water flow

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#siel #sluice #water gate #levee #dyke #drainage #water control

🧱🧻💧➡️

#dam structure #water channel #sluice #intake pipe #controlled water flow #civil engineering #water transport

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#buddle #sluice #ore washing #mining trough #mineral recovery #historical mining equipment