I'm studying a photo of a jet crash and it's subsequent cloud plume. I'm calculating that the cloud is 1000 meters wide and 7-800 meters tall, with the altitude of the cloud hitting maybe 900-1000 meters. Is there anyway to determine if this cloud is too big to have been made by a 757 carrying approx. 9-10,000 gallons (not pounds) of jetfuel? If not, what amount of TNT might produce such a cloud? Any help at all would be appreciated. Thank you for your time.