From the text: 'This poster display illustrates the current development of a classification of fuels in aspen forests. Fuels and flammability vary considerably within the aspen and mixed aspen/conifer forest types depending upon plant community type, grazing influence, and quantities of downed woody material. The classification is structured about these factors and appraises rate of spread, fireline intensity, and likelihood of successfully using prescribed fire. Quantitative fuel information is also available for the classes to use in mathematical modeling of fire behavior. The classification is intended for use in planning prescribed fires and fire suppression activities.'