Take mushroomed hammers to the machine shop for dressing. When using a hammer, wear safety glasses. Never hit two hammer heads together. A portable power tool presents hazards similar to a stationary machine of the same kind. Due to the mobility of power-driven tools, they can easily come in contact with the operator's body.
Electric shock is the chief hazard from electrically-powered tools.
For this reason, it is important to test grounded appliances and circuits periodically for ground continuity. Circular saws Guards should be used as the manufacturer intended. The guard should be checked frequently to be sure that it operates freely and encloses the teeth completely when cutting. ANSI Z87.1 standards shall be worn when operating a circular saw. Such eyewear is available from the stockroom.