Wall Street Journal Ranked in 4 of Past 5 Years:

Wall Street Journal - May 2009, 1 out of 30, Chemicals, 2008 

Chem, Factset

WSJ - May 2009, 1 out of 25, Alternative Energy, 2008  Alt. Energy
WSJ - May 2009, 3rd & 5th out of > 7,000, All Sectors, 2008  Top Gun
StarMine/Financial Times - May 09, 2 out of 25, Chemicals, 2008 Starmine
WSJ - May 2008, 1 out of 26, Chemicals, 2007  Chemicals 2,  2008
WSJ - May 2008, 1 out of > 4,000, All Sectors, 2007  Top Guns
StarMine/Yahoo - Jan 2008, 2 out of 26, Chemicals, 2007  StarMine08
WSJ - May 2007, 1 out of 26, Chemicals, 2006  WSJ07,  2007
StarMine/Forbes - May 2007, 2 out of 26, Chemicals, 2006  Forbes
WSJ - May 2005, 5 out of 27, Chemicals, 2004  WSJ06.pdf,  2005

See the press releases below:

Press Release: Investorside November 2009

Press Release: Investorside October 2008

Press Release: Investorside May 2009