17 In relation to the charge under s 15(1) the evidence established that the prosecutor was duly appointed and authorised to institute the proceedings against the first defendant. The first defendant was an employer. Messrs Katalinic, Lee and Latimer were employees of the defendant and were at work on 3 October 2000 at 7-9 Lanceley Place, Artarmon. The first defendant had been engaged to erect and install concrete panels forming the walls of a building using a mobile crane to lift the panels into position. The statement of facts in the proceedings against the second defendant summarises, and is entirely consistent with, the other evidence in the proceedings against the first defendant, in particular, the records of interview. The statement contained the following facts:
16. At all material times, the first defendant employed:
(a) Arthur Didovich, a director.
(b) Ian Lee ("Mr Lee"), the crane operator
(c) Mario Katalinic ("Mr Katalinic"), labourer
(d) Robert Davies ("Mr Davies").
(e) Mr William Latimer ("Mr Latimer").
At all material times on 3 October 2000 the above employees apart from Arthur Didovich were present at the site at the time of the incident. Mr Didovich had left the site just before the incident occurred.
17. At some time between 29 September and 3 October 2000 the first defendant had erected panels at the site, including but not limited to panel numbered 243
18. On 29 September 2000, Mr Payne met with Mr Didovich at the site to discuss the procedure of what would take place on 3 October 2000 ("the 29 September meeting").
19. During the course of the 29 September meeting, Mr Didovich advised Mr Payne that for the purpose of crane access to install the concrete panels for an internal wall, two set up props that were attached to panel 243, would need to be moved. Mr Didovich stated that the proposed work method was to install two additional props so as to ensure that there were two props in place at all times. It was further discussed and agreed that as an additional precaution fishplates would be welded to panel 243 and each adjoining panel prior to the removal of the props to give further stability to panel 243. Mr Payne stated that he would confirm with Abbey for a welder to be present on site on 3 October 2000 to undertake the welding work, in particular welding the fishplates to panel number 243 before the props were adjusted.
20. Following the meeting on 29 September 2000, Mr Payne telephoned Mr Paul Cattabriga of Abbey to arrange for a welder to be present at the site on the morning of 3 October 2000. In any event there was no welder in attendance on 3 October 2000.
21. On 3 October 2000 the crane was set up on a suspended slab consisting of hardwood timbers laid down on the first floor of the building under construction. Its function is to distribute the load of the crane. The size of the suspended slab was approximately 8ft by 8ft.
22. At all material times each panel was placed into position using the crane. Employees of the first defendant directed each panel into position. Each panel was numbered. Once a panel was installed the employees of the sub-subcontractor put props into position to secure each panel in place. The props were put on with the assistance of a cherry picker. The props were attached to the ferrule which forms part of the panel and the other end of the props were bolted to the floor using Dyna bolts. Each prop was secured to the ferrule with a pin which would be secured with a bent over nail or piece of wire to stop the prop from coming out. The first prop of each panel was used to plumb the panel before the second one was fitted or locked off.
23. At all material times on 3 October 2000, panel 243 was located on the north western side of the site on level 2 at the end of a row of four other tilt up panels. The panel formed part of the north wall and had two props supporting it. The props were secured with pins and Dyna bolts.
24. At all material times on 3 October the panel had a blue label on its base with identification number 243.
25. At all material times the panel weighed approximately eight (8) tonnes and measured between approximately 6 to 8 metres long by approximately 2 metres wide
26. The crane being used by Mr Lee on 3 October 2000 was an orange Cerdano 50 tonne mobile crane ("the crane") which was being used by the company to install the panels. The crane was facing the opposite direction to panel 243.
27. Mr Lee spoke to Mr Lucas, the foreman employed by the principal contractor to arrange for the movement of the propping under the suspended slab whilst he and the other employees of the sub-subcontractor had lunch. The crane was to be moved out, turned around and driven into position to begin installing the internal wall, which was to run perpendicular to the north wall.
28. On 3 October 2000 at approximately 1.15pm after some consultation with Messrs Lee, Latimer and Davies, Mr Katalinic went and obtained the rattle gun to undo the dyna bolt attaching one of two props to the floor. He removed the dyna bolt and at that point the panel fell on to the roof of factory Unit 4 at 80 Reserve Road, Artarmon which was located next door to the site. It is unclear whether or not Mr Katalinic had also removed the pin. In any event the connecting pin in the other prop was not in place.
29. When Mr Katalinic commenced removing the props from the panel,
(i) had not been secured by other means; specifically the additional props had not been installed and the panel had not been welded to the adjacent panels using fish plates; and
(ii) it had not been inspected to ensure that pins and Dyna bolts were secure.
30. From an inspection of the prop connections after the panel collapsed it appeared that there was no pin in the second prop.
31. As a consequence of the panel collapsing, damage was occasioned to units 1, 2, 3, 4, 5 and 6 located at 80 Reserve Road, Artarmon. The estimated cost of the damage was over $1,000,000.
32. At the time of the incident there were members of the public present in the vicinity of unit 4, 80 Reserve Road, Artarmon. Mr Peter Rolls, Mr Reg Rolls and Mr Clive Hores were present inspecting a motor vehicle.
33. At all material times on 3 October 2000, the first defendant failed to follow its own Work Method Statement in that a minimum number of two props should have been in place to hold the panel.
34. At all material times on 3 October 2000, the principal contractor, the first defendant and Mr Didovich failed to ensure that the prop was secured in place by a fishplate before removing its props.
35. At all material times the principal contractor and the first defendant failed to inform its employees of arrangements that had been made for the securing of the panel by alternative means before the props on panel 243 were moved.
36. At all material times there was no or any adequate record kept in the form of a site diary or otherwise of arrangements that had been made between Mr Payne and Mr Didovich as to how the panel was to be secured prior to the removal of props to allow crane access.
37. At all material times including 3 October 2000 the first defendant had no documented procedure for checking the security of the pins and Dyna bolts that secured props to the panels, and specifically panel 243.