TECK RESOURCES LTD

Ticker: TECK CUSIP: 878742204 Class: CL B

TETRAD CORP's Holding History (CIK: 0000883597)

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

Q1 2013
Shares 16,100 Value ($000) $453 Avg Close $33.39 Range $27.30 - $38.57
Q4 2012
Shares 16,100 Value ($000) $585 Avg Close — Range —
Q3 2012
Shares 16,100 Value ($000) $474 Avg Close — Range —
Q2 2012
Shares 16,100 Value ($000) $498 Avg Close — Range —
Q1 2012
Shares 14,100 Value ($000) $503 Avg Close — Range —
Q4 2011
Shares 13,200 Value ($000) $465 Avg Close — Range —