How will an oily shake roof and high volatile coal impact conditions for reopening a fire seal?

When considering the implications of an oily shake roof and high volatile coal on the conditions for reopening a fire seal, it's crucial to understand the properties of these materials.

An oily shake roof can retain heat significantly longer because the oils can act as insulators. High volatile coal also contributes to this, as it tends to burn hotter and can create substantial heat. When combustible materials are present, such as those described, they increase the likelihood that heat from any residual fire is trapped in the area, making it more challenging to determine if the fire is fully out and increasing the risks associated with rekindling.

Therefore, under these conditions, the heat retention provided by the oily shake roof and the characteristics of high volatile coal create a scenario where the potential for rekindling is heightened. This understanding is crucial for safety procedures when considering reopening a fire seal, emphasizing that careful assessment and monitoring are necessary to mitigate potential hazards.