1. The Shijingshan Iron Smeltery, founded in 1919 , predecessor of the Shoudu and Steel Co.

2. Applying the arsenic smoke from nonferrous smeltery instead of white arsenic as the finingagent of glass is fully feasible through theoretical analysis and trial test.

3. Should when built smeltery go into operation 1999, ability of supply demand relations returns a balance.

4. The working conditions in bio-oxidation work-shop of Yantai City Gold Smeltery since its putting into operation are introduced.

5. Rebuilding and operation status of flue dust baghouse collecting system in Guixi smeltery is introduced.

6. Two circuits are used to treat the waste residue containing copper which were produced by lead smeltery , and cupric sulphate reagent is get with this two circuits.

7. Microbial populations and heavy metal tolerant bacteria in soils around a copper - zinc smeltery were investigated.

8. In this study, oxidation - coagulation process is used for treating alkaline arsenic - containing wastewater in an antimony smeltery.