Metal Ore Extraction (Leaving Cert Engineering): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What type of extraction method is open pit mining?
What type of extraction method is open pit mining?
Surface extraction method
What does open pit mining primarily extract?
What does open pit mining primarily extract?
Metal ores
When is open pit mining used?
When is open pit mining used?
Ore near surface but extends deep down
How deep can open pit mine excavations reach?
How deep can open pit mine excavations reach?
Hundreds of metres
What are the stepped levels in an open pit mine called?
What are the stepped levels in an open pit mine called?
Benches
What does the terraced design prevent?
What does the terraced design prevent?
Rock falls and slope failures
Which equipment removes overburden and extracts ore?
Which equipment removes overburden and extracts ore?
Excavators
What do bulldozers do in open pit mines?
What do bulldozers do in open pit mines?
Level surfaces and maintain roads
What is used to break up rock and ore?
What is used to break up rock and ore?
Controlled explosions
What permanent change does open pit mining create?
What permanent change does open pit mining create?
Changes to natural topography
Which is an environmental impact of open pit mining?
Which is an environmental impact of open pit mining?
Habitat destruction
What is the purpose of reclamation processes?
What is the purpose of reclamation processes?
Restore mined areas after extraction