Most of this advice has been gleaned from UK/USA government publications and regulations.
The author suggests that for all workers, the regulations represent long-standing sound guidance based on the experience of many workers and Factory Inspectors.
The advice under these headings mostly refers to 'fixed-table hand push benches' used for cutting sheet or squared stock. It is assumed that carbide-tipped general purpose blades are fitted.
All possible disclaimers apply! The advice is intended for amateurs working by themselves. It is up to you to prudently and constructively interpret the advice according your own circumstances. If in any doubt, consult qualified source