MINE SAFETY APPLIANCES CO

CUSIP: 602720104 Class: COMMON STOCK

STATE OF MICHIGAN RETIREMENT SYSTEM's Holding History (CIK: 0000762152)

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

Q4 2013
Shares 14,800 Value ($000) $758 Avg Close — Range —
Q3 2013
Shares 14,700 Value ($000) $759 Avg Close — Range —
Q2 2013
Shares 14,300 Value ($000) $666 Avg Close — Range —