Circumstances in which the offences occurred
12The prosecutor has accurately summarised from the agreed facts the circumstances in which the offences occurred. What follows is taken from the prosecutor's submissions, which the defendant accepted had been fairly put.
13The works in which MVM was involved on 24 March 2009 formed part of construction and upgrade works which the Australian Rail Track Corporation Ltd was undertaking on the Main North Rail Line. The project involved the construction of track work and miscellaneous works, including the replacement of a section of railway lines and supporting concrete sleepers. The new railway sections were lifted into place at the site via a mobile crane.
14Taylor Railtrack engaged the defendant to provide labour for the installation works at the Farley site. In turn, MVM engaged GTE Workplace Management Pty Ltd ("GTE") to provide additional installation workers. Mr Iosefa and Mr McDonnell were among the three or four GTE employees on site at the time of the incident. MVM had approximately 10 employees performing installation work at the site and had contracted approximately 3 additional workers to assist with the work.
15Pursuant to the agreement between Taylor Railtrack and MVM, MVM was required to provide a supervisor for the night shift crew. Although Mr O'Sullivan was employed as a Supervisor with MVM, he thought the MVM workers were working as a labour crew for Taylor Railtrack and that they were under the instructions of the supervisors of the companies they were working for. Mr David Rumble (Rail Safety Operations Manager, MVM) described the MVM workers as supervised by Taylor Railtrack at the time of the incident, with Mr O'Sullivan acting as a leading hand at the site.
16At approximately 7.00 pm on 24 March 2009, the night shift crew commenced work at the site. Between 8.30 pm and 9.30 pm, the Boom crane crew lifted and installed two panels, known as "Panel 3" and "Panel 4", without incident. At approximately 9.30 pm, the crane crew relocated to the next designated area and set up the crane to lift "Panel 5" onto the track in accordance with the Lift Study Plan that had been prepared for them.
17Panel 5 consisted of six standard railway lines, each measuring approximately 12.4 metres. The railway lines were mounted in a parallel fashion across 21 concrete railway sleepers, which measured approximately 7.1 metres in length, 300 mm in height and 250 mm in width. The lines were secured to the sleepers by the use of "Pandrol" brand clips, which consisted of a flat, 2 side plates and 2 round rod metal "pig tail" shaped securing pins. Panel 5 weighed 34.7 tonnes.
18In order to lift the panel, the dogmen attached two sets of lifting chains (four chains in total) to the rails. One chain was placed under the second rail and the other chain was placed under the fifth rail. Both of the chains cradled the load around the rails between the sixth and seventh sleepers in from each end and ran underneath the mid rails.
19At approximately 10.30 pm, the crane crew commenced lifting Panel 5 from the lay down area into its position on the track. However, when the Panel was placed in location it was discovered that the end of the rail lines did not meet and the Panel could not be correctly aligned with the previous panel. The crane crew placed the load on the ground, and the installation workers attempted to realign the panels by removing some of the Pandrol clips from a mid rail and adjusting the rail with the use of an excavator. However, when the crane crew again lifted and attempted to place the Panel it became apparent that the attempt to correct the misalignment had not been successful.
20A discussion then ensued for approximately 20 minutes between a number of individuals on site, including Mr Paul Harris (Abigroup NSW Rail Manager), Mr Tim Horan (Construction Manager, Taylor Railtrack), Mr Geoff Drewe (Senior Project Engineer of Abigroup) and Mr Jason Stewart (Survey Technician, Rail and Road Professional Services). Whilst these discussions were occurring, the crane driver lowered Panel 5 to the ground, but he did not release all of the load from the crane. Of the total load of 34.7 tonnes, 31 tonnes remained under weight.
21In the course of the discussion, Mr O'Sullivan was asked for his opinion, but he did not participate in the final decision-making process. He did not consider it to be part of MVM's role, as he considered that the MVM employees were on site in a labouring capacity and, accordingly, he made a suggestion but then removed himself from the decision-making.
22A decision was made to unclip a number of Pandrol clips so as to remove a further two rails and slide them back into alignment. Mr Horan instructed the workers to undertake this task. A number of installation workers assisted, including Mr Iosefa, Mr O'Sullivan, Mr Dixon and Mr McDonnell. All but one of the workers involved in the incident, along with Mr Horan and Mr Harris, were unaware that Panel 5 was still under weight.
23As the installation workers were in the process of removing the Pandrol clips, they removed clips from rails that were directly under the load of the chain. As the clips were removed, it appears that the integrity of the remaining clips weakened, leading to excessive tension being placed upon the line. Shortly thereafter, a number of rail lines suddenly sprang free from the Panel and struck a number of the installation workers who were on the Panel.
24Mr Iosefa sustained fatal injuries as a result of the incident. Mr Dixon sustained a broken right leg, and Mr McDonnell received a laceration to the head, a broken shoulder, a broken ankle and (unspecified) injuries to his calf muscle. Mr O'Sullivan sustained a severe crush injury to his forearm and ultimately required amputation above the elbow.