Feb 28,2005

MSA Schedules Fourth Quarter Earnings Webcast

PITTSBURGH, Feb. 15 /PRNewswire-FirstCall/ -- 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 fourth quarter 2004 earnings conference call live via the Internet on Tuesday, March 1 at 2:00 p.m. EST. 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 conference 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 and follow directions from there. A replay of the conference call will be available on MSA's Web site for 30 days.

A press release outlining MSA's fourth quarter and year end financial results for 2004 will be distributed on March 1, 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 $800 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 http://www.msanet.com .

SOURCE  MSA
    -0-                             02/15/2005
    /CONTACT:  Mark Deasy of MSA, +1-412-967-3357/
    /Web site:  http://www.msanet.com /
    (MSA)

CO:  MSA; Mine Safety Appliances Company
ST:  Pennsylvania
IN:  ENV HEA
SU:  CCA MAV

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3721 02/28/2005 08:30 EST http://www.prnewswire.com