MSA hard hats are sold at some Home Depot and Lowe's locations. They are also available from online retailers such as Cooper Safety Supply and Northern Safety & Industrial.
MSA is a manufacturer of workplace safety products. The company was founded in 1914 as Mine Safety Appliances after a disaster in a West Virginia mine, according to the company website. Its first product was a electric cap lamp, designed in collaboration with the inventor Thomas Edison, which reduced mine explosions by 75 percent over the next 25 years. MSA produces hazardous gas detectors, flame detection systems, first aid kits and thermal imaging cameras, in addition to hard hats.