Held Line 2 : A control line that contains a wildland fire when mop-up has been completed, excluding lost line, natural barriers that were not backfired, and unused secondary firelines.
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}