Why did parents permit their children to work in mines and factories?

为什么父母会允许自己的孩子去矿山和工厂里面做工呢？

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Since many secondary vocational schools are run by enterprises, institutions, mines and factories, the graduates of these schools often can go directly to work in the sponsoring organizations.

由于许多中等职业学校都由企业、机关、煤矿和工厂开办的，所以毕业生常常可以直接在办学单位里工作。

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The researchers blamed farming and the clearing of forests for much of the damage. Rural areas are not the only ones losing soil. Land is also being affected in cities and near mines and factories.

研究者把大部分损害归咎于农业和砍伐森林，但是农村地区不是流失土地的唯一地区，在城市里、矿场和工厂附近土地也受到影响。

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The great wealth taken from the gold and silver mines was usually invested in other businesses: shipping,railroads,factories, stores,land companies.

VOA: special.2010.03.18

And they came by the hundreds of thousands to take jobs in steel factories in Pennsylvania and the coal mines of West Virginia.

VOA: special.2010.05.20

They took jobs in the steel factories of Pennsylvania and the coal mines of West Virginia.

VOA: special.2010.05.13

Mines and factories that make paint, batteries or electroplated products discharge waste water into local rivers and lakes.

WSJ: Review & Outlook: China's Toxic Rice Bowl

His improved, more efficient engine powered mines and factories, making coal, tin and copper available at lower prices.

FORBES: Watt's Up

In addition, Chinese businesses are investing in the northern part of the country, buying underworked mines and factories on the cheap.

ECONOMIST: North Korean society is turbulent and in flux