(1) Be a more visible leader of safety initiatives. It's important that employees see you as the action person who does not let safety issues go unanswered. Your response to issues helps build trust in the process and the overall efforts put forth by the safety department. (2) React quickly to safety issues / concerns that are raised. You don't want to be considered a black hole when it comes to safety. Employees that raise concerns want answers.
Yes they do. Any circular saw should have the size right on the saw some where. Standard is 7 1/4  NOT 7 1/2 For wood cutting blades 7 is standard for concrete (Masonry) or metal cutting blades. I guess you are in the UK or somewhere then. The 165 mm is equivalent to a 6 1/2  saw in the states. That would be the standard size for a cordless battery operated circular saw here.
Coarse-Toothed Saws. A pruning saw is considered coarse-toothed if it has about four and a half teeth per inch. An average saw might have about six teeth per inch. A coarse-toothed pruning saw is best used to cut through branches larger than 2 1/2 inches in diameter. Some saws feature two sets of teeth, one on each side of the saw blade. One side is for making coarse cuts while the teeth on the other side are for making fine cuts.