Open Cast Mining (Leaving Cert Engineering): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What type of mining is open cast mining?
What type of mining is open cast mining?
Surface mining technique
What is the term for unwanted material above the ore?
What is the term for unwanted material above the ore?
Overburden
What materials make up the overburden?
What materials make up the overburden?
Topsoil, rock, and debris
Which equipment is described as one of the largest land vehicles ever built?
Which equipment is described as one of the largest land vehicles ever built?
Bucket-wheel excavators
Why is removed topsoil often stored separately?
Why is removed topsoil often stored separately?
For later land reclamation efforts
What are the stepped levels created during extraction called?
What are the stepped levels created during extraction called?
Terraced benches
What safety function do terraced benches provide?
What safety function do terraced benches provide?
Preventing landslides
What are haul roads used for in open cast mines?
What are haul roads used for in open cast mines?
Transporting ore and waste rock
Why are ores near the surface considered cost-effective to extract?
Why are ores near the surface considered cost-effective to extract?
They are easy to locate and extract
What is a major environmental disadvantage of open cast mining?
What is a major environmental disadvantage of open cast mining?
Can permanently destroy landscapes
What limitation exists with land reclamation after mining?
What limitation exists with land reclamation after mining?
Original landscape can't be fully recreated