Hard hats come in a variety of bright colors ... the green-hatted safety inspector will make a report about it. Incidentally, green hats are also occasionally used to indicate a probationary ...

every head is measured before a hat is made. After taking an initial measurement with a tape measure, customers are fitted with a device called a conformator. This one is 150 years old.

How the company that invented the hard hat is preparing for a hotter future Bullard patented the world's first hard hat a century ago. But today, as more workers toil in extreme heat, it's adding ...