Objective To find out the causes and the harm extent of this serious Silica dust hazard event and discuss the prevention and control measures for small scale quartz workplace.

目的了解造成本次严重矽尘危害事件的原因及危害程度，探讨小型石英粉加工企业矽尘危害的预防和控制措施。

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The purpose of this paper is to analysis the hazard of pharmaceutical dust, and point out that the poison of drug is the key aspect to occupational health.

本文研究的目的是综合分析药物粉尘的危害特性，重点提出药物粉尘的药物毒性对职业健康危害的影响。

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Dust accumulation of more than 0.8 millimeters - covering at least 5 percent of a room's surface poses a significant explosion hazard.

粉尘沉积超过0.8毫米，覆盖房间表面达5%或以上时，会有重大的爆炸隐患。

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"I don't think anyone in the industry, including ourselves, were fully aware of the potential of dust as a hazard, " Mr. Mechler said.

WSJ: Imperial Sugar to Pay Fines in Deadly Georgia Explosion Case

The inhalation of these fine dust particles represents a health hazard that was known to the military as long ago as 1974.

BBC: UK to aid Iraq DU removal

With each explosion, the tunnels, some centuries old, some less than a metre high, fill with thick clouds of dust one more hazard to add to the effects of consuming coca leaves, fiery local alcohol and rough cigarettes, and the risk of poisoning from handling mercury.

ECONOMIST: Under the ocean, up in the clouds