I took a welding class over twenty years ago with about 30 students. Some of them knew nothing about welding. One guy picked up a helmet that had only the clear protector with no shade and the instructor did not notice it. They stick welded 3-4 hours and that poor b!@#$%d watched through a clear lens the entire time. When the instructor finally caught it at lunch break, his eyes were blistered and he could not see. They put him in the hospital for 4 days - his eyesight finally returned but afterwards, he decided welding was not something he wanted to continue learning about...
|