 Piles from logging slash are typically burned by igniting the perimeter of the piles. Piles burn best when they are dry and do not contain too much soil. There will generally be less soil in the piles if they are created when the ground surface is dry. Create piles so air can move throughout them and dry the fuel. Burning piles can lead to smoke incidents on nearby roads or buildings if the piles are burned when they are wet or full of soil. Wet piles do not combust very well and the smoke will not be warm enough to rise into the atmosphere. Large amounts of fuel will compound the problem and most piles can burn for days or even weeks.