This is very important for anyone wearing contact lenses. Wear ear protectors when using noisy power tools.
Some tools operate at noise levels that damage hearing.
The proper respirator or face mask should be worn when sanding, sawing or using substances with toxic fumes. Keep blades sharp. A dull blade requires excessive force and can slip which causes accidents. Always use the right tool for the job. Repair or discard tools with cracks in the wooden handles or chips in the metal parts.