Around here Dan our summer harvest is often done in temperatures of 100 deg f.+ so heat is a problem in starting fires.Most custom harvesters blow their machines down daily,in Chickpeas a lot of contractors have water tankers in the paddock as the ckickpea dust is bad for starting that burning feeling.All colours will burn here some are a little worse than others.This year I put out a fire in the R72 near the straw speaders,the combine had only been harvesting chickpeas and hour and a half after been blown down.There was absolutely no damage done to the R72,the fire was burning totally in the chickpea dust.john