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| exploitation; work | |||
| quarry; recovery; taking | |||
| digging | |||
| mining; working | |||
| development | |||
| production; winning | |||
| exploit | |||
| mine | |||
| free working; getting; opening up; open up; quarrying | |||
| extract | |||
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| development | |||
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| mining | |||
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| tap off | |||
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| mining | |||
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| hew | |||
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| quarry | |||
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| working | |||
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| begin picking | |||
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| recovery | |||
| 开采: 1134 phrases in 48 subjects |