Apr 21,2005

MSA Schedules First Quarter Earnings Webcast

PITTSBURGH, April 21, 2005 /PRNewswire-FirstCall via COMTEX/ -- MSA (NYSE: MSA), the global leader in the development, manufacture and supply of sophisticated products that protect people's health and safety, announced today that it will broadcast a first quarter 2005 earnings conference call live via the Internet on Thursday, May 5 at 10:00 a.m. EDT. The call will last approximately 45 minutes.

Investors and interested parties will have the opportunity to listen to the conference call live at http://www.msanet.com . Please log onto MSA's Web site 15 minutes prior to the start of the call to register. It may be necessary to download audio software to hear the conference call. To do so, investors should click on the Earnings Conference Call link on MSA's Web site and follow directions from there. A replay of the conference will be available on MSA's Web site for 30 days.

A press release outlining MSA's first quarter 2005 financial results will be distributed on May 5, 2005 before the market opens.

Established in 1914, MSA is a global leader in the development, manufacture and supply of sophisticated safety products that protect people's health and safety. Sophisticated safety products typically integrate any combination of electronics, mechanical systems and advanced materials to protect users against hazardous or life-threatening situations. The company's comprehensive line of products is used by workers around the world in the fire service, homeland security, construction and other industries, as well as the military. Principal products include self-contained breathing apparatus, gas masks, gas detection instruments, head protection, respirators and thermal imaging cameras. The company also provides a broad range of consumer and contractor safety products through retail channels. These products are marketed and sold under the MSA Safety Works brand. MSA has annual sales of more than $850 million, manufacturing operations throughout the United States and Europe, and more than 30 international locations. Additional information is available on the company's Web site at www.msanet.com .

SOURCE MSA

Mark Deasy of MSA,
+1-412-967-3357