Heavy Fuels 4 : Large diameter woody or deep organic materials that are difficult to ignite and burn more slowly than fine or medium fuels. Syn: Coarse Fuels.
The Canadian Interagency Forest Fire Centre (CIFFC), Glossary of Forest Fire Management Terms, Manitoba, Canada 2003. http://bcwildfire.ca/mediaroom/Backgrounders/2003_ Fire_Glossary.pdf, (For Fr - Canad) {474}