$HE SEC Filings

Filing Filed On
8-K 04 Aug 2011
8-K 25 Jul 2011
8-K 06 Jul 2011
8-K 01 Jul 2011
8-K 24 May 2011
8-K 11 May 2011
8-K 10 May 2011
8-K 11 Apr 2011
8-K 01 Apr 2011
8-K 28 Mar 2011
8-K 14 Mar 2011
8-K 07 Mar 2011
8-K 04 Mar 2011
8-K 14 Feb 2011
8-K 11 Feb 2011
8-K 21 Jan 2011
8-K 14 Jan 2011
8-K 11 Jan 2011
8-K 30 Dec 2010
8-K 16 Nov 2010