Mine Safety Appliances Co. (MSA)
P. O. Box 427
The primary business of MSA is the manufacture and sale of products designed to protect the safety and health of people throughout the world. MSA offers more than 5,000 products to a diverse range of industries and businesses. These products include confined space equipment, monitors, portable instruments, permanent gas detection equipment, and mining products. MSA products help provide protection from fire, combustibles, oxygen deficiency, toxic gases and vapors, particulates, and confined spaces.