While a shortage of sand resources in many states of our country, much crushed stone dust was produced in the course of crushing stones in quarry.

在我国很多地区出现天然砂资源短缺的同时，采石场加工碎石产生大量的石屑，占用场地且污染环境。

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Companies are integrated enterprises, the main core for the building or real estate, the provision of gravel, sand, brick machine, quarry and transport.

公司属综合性企业，为主要核心建筑或房地产，提供砂石、河沙、机砖、石矿及运输。

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Methods Scanning electron microscope and X-ray analysis were used to study the distribution of all kinds of elements in sand-cast, sculpt and clear-sand of one foundry work and quarry work.

用扫描电子显微镜和X射线能量色散仪测定某铸造作业翻砂车间、造型车间、清砂车间和某采石作业生产性粉尘粒子的结构及各元素的百分含量。

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It turned out that the concrete was made using beach-sand that was not properly desalinated, rather than more expensive quarry-sand.

ECONOMIST: The land of disappointments | The

If approved the quarry would release five million tonnes of new sand and gravel reserves.

BBC: Ducklington's Gill Mill quarry expansion planned

The quarry is owned and run by Cemex, which extracts sand and gravel from the site.

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