Added handrails to the funnel. There are five levels of lower handrails. Your will noticed that the distances between the handrails are approximately the height of a man. Basically, they allow access to the different parts of the funnel for maintenance/repair/painting etc. Maintenance personnel can stand on the handrail at one level and steady themselves by holding on to the handrail above them. To get from one level to another, one goes to the forward shallow part of the funnel and climb or decent with the help of the ascent handrails. Under the accent handrails is yet another set of handrail of a lower height. My assumption is that these are further aids for climbing. At the top of the funnel are the upper handrails. These extends out more significantly than the lower handrails. My guess is that they are used to gain access to the top of the funnel.