$NAT SEC Filings

Filing Filed On
8-A12B 14 Feb 2007
6-K 17 Jan 2007
6-K 28 Dec 2006
6-K 08 Dec 2006
6-K 01 Dec 2006
6-K 09 Nov 2006
6-K 19 Oct 2006
6-K 19 Oct 2006
FORM 6-K 11 Oct 2006
FINAL PROSPECTUS SUPPLEMENT 10 Oct 2006
FREE WRITING PROSPECTUS 27 Sep 2006
PRELIMINARY PROSPECTUS SUPPLEMENT 27 Sep 2006
FREE WRITING PROSPECTUS 27 Sep 2006
PRELIMINARY PROSPECTUS SUPPLEMENT 27 Sep 2006
FORM F-3ASR 26 Sep 2006
FORM 6-K 25 Sep 2006
6-K 11 Sep 2006
6-K 02 Aug 2006
6-K 31 Jul 2006
20-F/A 19 Jul 2006