Problems and Solutions on Individual Respiratory Powder and Dust Monitor

Respiratory powder and dust monitor experiments had been performed in 161 mines from 1995 to 2005. The experimented subjects include 150 workers in the first category region, 300 workers in the second category region, adding the total powder and dust samples to be 39, 360.This paper suggests that an analysis model of "sampling in the mines and collective analyzing" be adopted for mining companies.