This paper set up controller for ore mining loss and ore dilution and put forward analytical and controllable methods by using the matter element analytical theory.

应用物元分析理论，建立了采矿损失、矿石贫化控制器，提出了分析和控制方法。

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He also describes how to reduce the ore quantity under the road in the development of permanent road and temporary road, how to decrease the mining loss of Pingguo Bauxite...

并对如何减少开拓固定公路和临时公路压矿、减少平果铝土矿的采矿损失率、充分利用国家矿产资源等问题，进行了论述。

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According to the condition of ore body, selected mining method and proportion of each mining method, and through calculation, the mining loss rate is 12% and the impoverishment rate is 15%.

根据矿体赋存条件和所选用的采矿方法，各种采矿方法所占的比例，计算采矿综合法损失率为12%、贫化率为15%。

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The government plan to close down a large part of the country's loss-making mining industry is part of the reform package.

BBC: By Central European Analyst Jan Repa

In Wales, despite the loss of jobs in mining and other traditional industries, there was record inward investment.

BBC: Margaret Thatcher: Former Welsh Tory leader's memories

He said the main cause of decline in wild bees, such as mining and mason species, was loss of habitat due to a variety of reasons including urban development.

BBC: Oxford's The Kidneys Jubilee flower meadow for bees