Deck: Deck General

1. A Most problems with spontaneous combustion will occur within 72 hours of loading and after that the risk decreases.
2. B Coal absorbs nitrogen from the air which reacts with methane and causes spontaneous heating.
3. C Wet coal is more liable to spontaneous heating than dry coal.
4. D Freshly worked coal is more dangerous than weathered coal.

Tip: press A-D to answer