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作者研究的碳化钙(CaC_2)工厂建于1908年,位于挪威西部海湾。该厂生产CaC_2,氰氨化钙和双氰胺。工人除接触高温外,还有CaC_2,CaO,煤粉尘,CO、C_2H_2的接触;一些杂质磷酸钙和砷酸钙遇潮时可生成磷化氢和砷化氢;在炉壳焊接和电炉阳极粘贴的铺砌过程可产生多环芳烃(PAH);该厂还用石棉作为隔热材料。没有测过PAH;1975年测定双氰胺车间的总粉尘在10～25 mg/m_3之间,氨在3～17 pmm之间,CO在0.2～0.8 pmm之间,
The CaC 2 plant under study by the author was built in 1908 and is located in the western Gulf of Norway. The plant produces CaC_2, calcium cyanamide and dicyandiamide. In addition to workers exposed to high temperatures, but also CaC_2, CaO, coal dust, CO, C_2H_2 contact; some impurities calcium phosphate and calcium arsenate case can generate phosphine and hydrogen arsenide; welding in the furnace shell and the anode paste The paving process produces polycyclic aromatic hydrocarbons (PAH); the plant also uses asbestos as a thermal insulation material. PAH was not measured. The total dust of dicyandiamide workshop in 1975 was between 10 and 25 mg / m 3, ammonia between 3 and 17 pmm, CO between 0.2 and 0.8 pmm,