Before and after ending of deep open-pit coal mine,geological disasters such as slope sliding and surface deformation probably occur.

Vegetation dynamics during plant rehabilition in degraded mined land of large opencast coal mine within loess area;

With the methods of literature,questionnaire survey,expert interviews,mathematics statistics,etc,the authors research the mass sports status of state owned large coal mine enterprise in Jiangsu Province and find that the healthy status of staff and workers is good and can meet the demands of work.

Investigation into coal-gas outburst occurred in Daping Coalmine, by using theories of gas-geology;