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CUSIP: 629491101 Class: COM

TOCQUEVILLE ASSET MANAGEMENT L.P.'s Holding History (CIK: 0000883961)

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

Q3 2013
Shares 10,000 Value ($000) $420 Avg Close — Range —
Q2 2013
Shares 15,000 Value ($000) $621 Avg Close — Range —