It even results in geologic hazard;for the mine geologic hazard,the background of physiognomy is the potential factor,while the irrational exploitation is the magistral factor.
The results showed that a mixed mating system was possibly the main heterogamy of this species, and its endangerment was caused by over-exploitation and habitat loss.
The collier that asbestine mine extracts and machines and worker, the person that contacts asbestine produces the person that far outclass of tumour of the skin between pleura is not contacted.