LONDON (Dow Jones)--Leaf Clean Energy Company (LEAF.LN), an investor in in clean energy projects, said Tuesday that on July 9, it purchased for cancellation 450,000 ordinary shares at 60 pence per share. -Shares closed Monday at 61.0 pence. -By Iain Packham, Dow Jones Newswires; 44-20-7842-9269; [email protected] (END) Dow Jones Newswires July 13, 2010 02:54 ET (06:54 GMT)