| 02 Dec 2011 | DRILLA Factsheet December 2011 | 808 KB |
| 01 Nov 2011 | DRILLA Factsheet November 2011 | 808 KB |
| 07 Oct 2011 | DRILLA Factsheet October 2011 | 807 KB |
| 01 Sep 2011 | DRILLA Factsheet September 2011 | 808 KB |
| 05 Aug 2011 | DRILLA Factsheet August 2011 | 809 KB |
| 01 Jul 2011 | DRILLA Factsheet July 2011 | 808 KB |
| 03 Jun 2011 | DRILLA Factsheet June 2011 | 803 KB |
| 02 May 2011 | DRILLA Factsheet May 2011 | 803 KB |
| 04 Apr 2011 | DRILLA Factsheet April 2011 | 804 KB |
| 03 Mar 2011 | DRILLA Factsheet March 2011 | 803 KB |
| 01 Feb 2011 | DRILLA Factsheet February 2011 | 801 KB |
| 03 Jan 2011 | DRILLA Factsheet January 2011 | 801 KB |