Wildfire operations field guide
Dozer Line vs Handline vs Fireline: what is the difference?
Fireline is the mineral-soil line itself. Handline and dozer line describe how that fireline was constructed.
Core distinction
Function first, construction method second.
NWCG defines fireline as the part of a containment or control line scraped or dug to mineral soil. A handline is fireline constructed with hand tools; a dozer line is fireline constructed by a bulldozer blade.
The generic mineral-soil line intended to interrupt fuel continuity.
Fireline built manually with tools such as pulaskis, shovels, hoes or saw support.
Fireline constructed mechanically with the front blade of a dozer.
The broader barrier system can also include roads, rivers, retardant-treated areas and other barriers—not only scraped mineral-soil line.
Why method matters
Speed, access and disturbance differ.
- Hand crews can reach terrain where heavy equipment cannot.
- Dozers can construct line rapidly where access and terrain permit.
- Mechanical line generally creates a larger disturbance footprint.
- Line location, width and construction method depend on fuels, terrain, fire behavior and tactical objectives.
Related terminology
Fireline is only one type of control feature.
Sources