MINE SAFETY APPLIANCES CO

CUSIP: 602720104 Class: COMMON STOCK

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q4 2013
Shares 51,279 Value ($000) $2,626 Avg Close — Range —
Q3 2013
Shares 50,879 Value ($000) $2,626 Avg Close — Range —
Q2 2013
Shares 49,329 Value ($000) $2,296 Avg Close — Range —
Q1 2013
Shares 48,002 Value ($000) $2,382 Avg Close — Range —