Here is a short timeline which covers how the proposal known as the
Wooloowin Worksite Modification Request for Project Change,
which involves sinking a 42m shaft in Wooloowin, came about:
| Date | Source | Event |
| March 2009 | David Lynch, CEO, CNI | TJH's geotechnical investigations and anchor installation for Ramp C at Kedron identify major issues. |
| Early April 2009 | David Lynch, CEO, CNI | TJH confirms internally that adverse ground conditions could delay program. |
| Mid April 2009 | David Lynch, CEO, CNI | TJH develops a set of alternative solutions and concludes that Rose Street shaft is only viable alternative. |
| Late April 2009 | David Lynch, CEO, CNI | CNI briefed on issue with ground conditions and proposed modification to project. CNI require further technical work before progressing modification. |
| May 2009 | David Lynch, CEO, CNI | Excavation of Ramp C confirms geotechnical concerns. |
| May 2009 | David Lynch, CEO, CNI | BC/TJH undertake technical and other work for modification proposal undertaken. |
| June 19 2009 | David Lynch, CEO, CNI | Modification Proposal submitted to Coordinator General. |
| June 22 2009 | David Lynch, CEO, CNI | Minister announces consultation. |
| June 24 2009 | David Lynch, CEO, CNI | Public consultation begins. |
| July 17, 2009 | Coordinator General | Submissions to the Coordinator General close. |
| To Be Announced | Coordinator General | Coordinator General (Mr Colin Jensen) issues ruling on Wooloowin Shaft. |