MINE SAFETY APPLIANCES CO

CUSIP: 602720104 Class: COMMON STOCK

FRONTIER CAPITAL MANAGEMENT CO LLC's Holding History (CIK: 0000351173)

Note: Option positions (PUT/CALL) are excluded.

Q4 2013
Shares 703,291 Value ($000) $36,016 Avg Close — Range —
Q3 2013
Shares 736,079 Value ($000) $37,989 Avg Close — Range —
Q2 2013
Shares 712,807 Value ($000) $33,181 Avg Close — Range —