Bucket-wheel exca..
7s
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Coal mine with bu..
11s
|
Bucket-wheel exca..
10s
|
Coal mine with bu..
7s
|
Coal mine with bu..
12s
|
Belt conveyor in ..
7s
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Coal pit for brow..
8s
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Coal mine with bu..
8s
|
Coal mine with bu..
8s
|
Coal mine with bu..
7s
|
Coal mine with br..
10s
|
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