MINE SAFETY APPLIANCES CO

CUSIP: 602720104 Class: COMMON STOCK

CUSHING ASSET MANAGEMENT, LP dba NXG INVESTMENT MANAGEMENT's Holding History (CIK: 0001329375)

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

Q3 2013
Shares 12,800 Value ($000) $661 Avg Close — Range —
Q2 2013
Shares 9,300 Value ($000) $433 Avg Close — Range —