One-Hour Time Lag Fuel : Fuel composed of dead herbaceous plants and round wood less than 1/4 in. in diameter, including the uppermost layer of needles or leaves on the forest floor
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}