An operator can get sued for negligence if they do not supply the correct safety equipment for their employees. This can be avoided if you supply quality, genuine inner lenses for your employees blast helmets.
The importance of eye protection is great because, when blasting, the high velocity of the compressed air can make rust chips ricochet and flick up at the blast helmet. The outer lens can only take so much but it is there to protect the inner lens. The highest quality inner lens is vital in a blast helmet.
LABORATORY TESTED, GENUINE LENSES CAN RESIST HARSH CONDITIONS
These genuine lenses have been stamped in the corner for correct identification of their quality. These lenses have been heated and cooled and hit with a ball bearing that has been fired at 200 mph, and they can not shatter. These are the lenses that need to be supplied for safety whenever you are blasting.