RIO TINTO PLC (RTPPF) [Rocket]

Date	Name	Symbol	Type	Security	Shares	Price	Value	Ownership	Reported
12/21/2010	CLOUD PEAK ENERGY INC.	CLD	Conversion	Common Stock	29.4M	$0.00	$0	See footnote	12/21/2010
12/21/2010	CLOUD PEAK ENERGY INC.	CLD	Sale	Common Stock	29.4M	$19.50	$573.3M	See footnote	12/21/2010
12/21/2010	CLOUD PEAK ENERGY INC.	CLD	Conversion	Common Membership Units	29.4M	$0.00	$0	See footnote	12/21/2010
11/19/2009	CLOUD PEAK ENERGY INC.	CLD	Disposition	Common Membership Units	30.6M	$14.18	$433.9M	See footnote	11/19/2009