Abstract
Recently explosions of Virginia coals which are carrying as North American liner's homeward base cargo occur about ten times. After investigation of the events we found them as marsh gas explosions. We examined the data of Virginia coal carrying condition on board of Philippine-Maru. We find two course for anti-explosion of coal-negative and positive. For positive course ventilation is almost only way for anti-explosion of coal. We find the way of ventilation by the model of hatch test.
