Dredging (Leaving Cert Engineering): Flashcards

Mining method to extract metal ores from underwater locations

Riverbeds, lake bottoms, and sea floors

Vertical support posts that anchor the dredging vessel

Onboard facilities that separate valuable ores from waste

Valuable minerals concentrated by natural water action

Collection, processing, and disposal

Gold, tin, sand/gravel, rare earth minerals

Creates muddy water, reduces visibility and oxygen levels

Destroys habitats for fish, plants, and aquatic organisms

Less visual impact on the landscape

Storms, high winds, rough water can halt operations