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Aerial Fuels – Fuels which are arranged vertically in a manner that could facilitate fire spread into the overstory or canopy trees. Vertical arrangement of fuels.
Burn Break – Used interchangeably with fireline.
Fireline – A line on the perimeter of the fire unit designed to provide access along and to contain the fire within the fire unit. Firelines are usually cleared of brush and leaves to eliminate the fuels along the line and prevent the fire from spreading across the lines.
Fuels – Organic matter that can burn under the correct conditions and support the spread of running fire on the ground. Leaves, sticks and logs both dead and alive are considered fuels.
Prescription – A detailed plan outlining elements to safely and successfully carry out a prescribed fire. This plan outlines objectives, unit history, unit description, contingency plans, resources required, safety contingency and conditions under which the fire can be carried out (weather prescription). Prescriptions, or burn plans, must be submitted to the Minnesota DNR Division of Forestry, which authorizes burn permits if the plan is considered sufficient and all contingencies have been planned for.
Wildland Fire Engine – A specially equipped truck with water tank and engine designed to assist with suppressing wildfires and containing prescribed fires. Sometimes referred to as a Type 6 Engine.
Photo credits: (left) Environmental prairie grass burning. Photo © Deanna Olson. (right) Flanking fire. Photo © Phil Graeve/TNC.
