MINE SAFETY APPLIANCES CO

CUSIP: 602720104 Class: COMMON STOCK

NISA INVESTMENT ADVISORS, LLC's Holding History (CIK: 0000937615)

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

Q4 2013
Shares 5,000 Value ($000) $256 Avg Close — Range —
Q3 2013
Shares 5,000 Value ($000) $258 Avg Close — Range —
Q2 2013
Shares 5,000 Value ($000) $233 Avg Close — Range —