MINE SAFETY APPLIANCES CO

CUSIP: 602720104 Class: COMMON STOCK

PRICE T ROWE ASSOCIATES INC /MD/'s Holding History (CIK: 0000080255)

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

Q4 2013
Shares 4,348,374 Value ($000) $222,680 Avg Close — Range —
Q3 2013
Shares 4,015,230 Value ($000) $207,226 Avg Close — Range —
Q2 2013
Shares 3,772,670 Value ($000) $175,618 Avg Close — Range —