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1
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tunnel construction
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Australia
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Tunnel construction is prevalent in hilly terrains for road and railway networks to improve connectivity.
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1
|
|
2
|
tunnels
|
Australia
|
Tunnels are less common due to the relatively flat terrain and are usually associated with specific infrastructure projects, such as mine shafts and underground utilities.
|
1
|
|
3
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underground
|
Australia
|
There are underground mining operations for extracting resources like coal and gold.
|
1
|
|
4
|
underground
|
Australia
|
The term 'underground' often refers to opal mining
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1
|
|
5
|
underground
|
Australia
|
Underground mining is a significant industry.
|
1
|
|
6
|
underground tunnels
|
Australia
|
Used for urban stormwater management and flood control
|
1
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