This report discusses the construction techniques, testing methods, and explosion test data collected for the pumpable cementitious seals; the seal, stopping, and overcast designs for the Australian program; and the Packsetter preloaded solid-concrete-block seal.

nThe National Institute for Occupational Safety and Health (NIOSH)'s Pittsburgh Research Laboratory conducted a full-scale test of a composite polyurethane-aggregate seal in a hydrostatic chamber at the Lake Lynn Experimental Mine. The report details the test results of the composite polyurethane-aggregate seal and provides an analysis of those results in terms of the seal's structural behavior.

This publication details recommendations for a new rock dusting standard to prevent coal dust explosions in intake airways.