Dust Sampling and Laboratory Testing Procedures After Underground Coal MineExplosions

摘要

After an underground coal mine explosion, samples of the coal and remaining dustare taken for analysis to help determine the point of origin of the explosion and the extent of explosion flame. These include channel samples of the coal seam and band samples of the mine dust in the entries and crosscuts throughout the explosion zone. Also, if necessary, spot samples of mine dust are taken from equipment or from other areas that the band samples did not cover. The purpose of the report is to summarize the methods for collection of these samples and to discuss the information obtained by analysis of each sample.