| Filed On | Filing |
|---|---|
| 24 Jul 2006 | SALE OF 3,297,385 SHARES OF COMMON STOCK |
| 07 Nov 2005 | #10 - JEFFERIES & CO. |
| 03 Jun 2005 | GTI - PROSPECTUS #9 |
| 17 Mar 2005 | GTI PROSPECTUS SUPPLEMENT #8 |
| 17 Mar 2005 | GTI PROSPECTUS SUPPLEMENT #8 |
| 14 Jan 2005 | GTI PROS SUPP NO. 7 |
| 10 Nov 2004 | PROSPECTUS SUPPLEMENT NO. 6 |
| 10 Sep 2004 | GTI PROSPECTUS SUPPLEMENT #5 - 9/8/04 |
| 06 Aug 2004 | PROSPECTUS SUPPLEMENT |
| 01 Jul 2004 | GTI PROSPECTUS SUPPLEMENT NO. 3 |
| 28 May 2004 | PROSPECTUS SUPPLEMENT NO. 2 |
| 11 May 2004 | PROSPECTUS SUPPLEMENT |
| 07 May 2004 | 1 5/8% DEBENTURE PROSPECTUS |
| 26 Jul 1999 | DEFINITIVE PROSPECTUS |
| 09 May 1997 | 424B3 |
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