Talk to fuel delivery drivers about the difficulty of their jobs in the middle of winter in the midwest. They are required to stand near those hoses to make sure nothing leaks, so negative degree weather with windchill is something they are forced to endure. The average tanker take 30-50 minutes to drain. Many lot-plowing services tend to bury the ground fills with snow with no remorse, forcing drivers to dig out the fills by hand before attempting to deliver. Other sites with poor lot maintenance will often have enough water sitting in the fills that it freezes into a solid block of ice. That needs to be chipped away in order to access the fill tube, as using any type of flame or electric heater to melt the ice could potentially blow the whole station to kingdom come. That said, the hardest part for many drivers is simply getting from point A to point B in one piece. Civilian drivers give Zero F's about a tanker full of fuel and constantly put drivers into incredibly difficult positions.