HENDERSON HELEN RUTH

Related Filers (1)

Ownership (3)

SC 13G/A
Wednesday, 2/4/1998
MINE SAFETY APPLIANCES CO: Major Shareholders
SC 13G/A
Monday, 1/27/1997
MINE SAFETY APPLIANCES CO: Major Shareholders
SC 13G/A
Tuesday, 1/23/1996
MINE SAFETY APPLIANCES CO: Major Shareholders
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