Funny thing on eye safety, even when wearing safety glasses when chipping, grinding, wire brushing, and all else we do the most unsafe time for our eyes is when we take a break from work and remove the safety glasses when no work is going on around us. All of the worst crap (the fine particles actually do the worst damage) collects in the eyebrows and will get into your eyes when walking by a fan, from a breeze, or when washing your face at the end of a shift. I learned this at an early age from my dad who was a machinist for 40 years. Growing up I can remember him having cast iron dust removed from his eyes on a regular basis, most every time it was at the end of the day when he was picking up tools, locking down the shop, cleaning up, or walking to his truck