IMPLOSION AS A METHOD OF DEMOLITION
demolition on the other. If implosion is done competently by an experienced person are there any safety advantages in the use of implosion as opposed to the use of traditional demolition?
"If half of the effort had been made to see whether or not Mr. McCracken was qualified that you apparently made to find out every little job that may be less than perfect even with all of the inappropriate and wrong data that you approached me yesterday, he would never have been given permission to do this job".
Mr. Purnell SC sought clarification.
in Phoenix (Maryland), the time differences between the two countries in addition to the fact that certain Counsel wished to personally confer with Mr. Loizeaux upon his arrival in Australia. The course of action agreed upon was that the Coroner would telephone Mr. Loizeaux in Phoenix (Maryland) and express to him the importance of his attendance in Australia to give evidence.
(a) Ever been involved in a serious injury?---During the demolition of a structure, no.
During the preparation of demolition?---Of a building, no.
During the work after the demolition?---We had one of our employees who broke several of our rules and he was killed in an accident putting explosives away, yes.
And that was Chris Keegan?---Right. You’re well informed.
And was there an inspector from a regulatory authority who was killed in Florida 15 years ago with the Loizeaux group?---Yes. It’s generally recognised that basically he committed suicide.
And that was during an implosion, wasn’t it"---No it wasn’t.
What part of the process was that involved in?---That was when I was preparing to dispose of explosives after the completion of a project. We’d ejected him twice from the site, he was in fact an inspector, because twice he tried to steal explosives. He came in at the site behind me and came up, according to our pilot, to be standing about 100 yards away, leant over behind me, and the explosives detonated.
Has there been some injury done during the implosion process with the Loizeaux group – injury caused, physical injury?---The only two injuries that have occurred during implosion that I’m aware of were two inspectors that used their badges to get inside of a safety zone after we had checked that zone, were in an approved area, trying to get a picture or get a better view, ironically both of them were struck in the foot with a piece of concrete. And that’s the only injury that I’m aware of.
In Baltimore, Marylands, was there an injury to a young girl who was a spectator?---Not that I’m aware of.
When you said that frequently in terms of buildings not going according to plan in terms of the implosion method, did that happen with one of your buildings, the K25 Oaks Ridge in Tennessee for the Department of Energy?---That’s correct.
And how long ago did that mishap occur?---I don’t know the exact date. It’s been a year or two.
Right and another one, again for the Department of Energy, at the Fenaldo, Ohio site?---Yes.
(b) But was there not damage done to the people mover?---Accordingly to the structural engineer it sustained minor damage, yes.
And were there not 50,000 involved in watching that implosion?---I heard estimates much lower than that.
I see and well, what estimated number of people do you say saw that implosion?---The police estimated the crowd that assembled around the safety perimeter was around 20,000.
How many?---20.
Now, were the people that watched that implosion enveloped in a dust cloud?---there was the down – those that were down wind were definitely inundated, yes.
And was there concern in relation to the dust that it was a hazard so far as public health was concerned in relation to lead and asbestos?---That’s expressed frequently on projects, yes.
But in relation to this project?---Yes. It happens frequently.
And was not the Department of Health involved in that project following complaints by spectators?---I don’t know. The dust associated with the implosion is outside of our contract scope.
EMU BREWERY IMPLOSION – 23RD FEBRUARY 1992
22. The Emu Brewery was demolished by implosion on 23rd February 1992. The Brewery was a multi – storey steel structure located in Mounts Bay Road and Spring Street, Perth (WA). Cutting charges were used on the project by the Loizeaux Brothers. There was a mishap when a piece of steel struck the truncheon of a police officer apparently standing outside the exclusion zone. Although it was not within the knowledge of Mr. Loizeaux it was acknowledged by Controlled Demolition Incorporated in a letter dated 11th March 1992 to the Department of Occupational Heath and Safety (WA) stating: -
"Two pieces of steel which were identified as pieces of the web section of the steel columns were ejected some considerable distance as a result of this blast.
Both pieces landed within the evacuation area, concern was expressed due to the potential for injury to personnel and/or property damage within the evacuation area.
It is probable that the occurrence of the displaced pieces of steel was due to an unused high carbon or manganese content in the structural steel which would have given the steel less malleability resulting in it becoming brittle. The small kicking charge tore the brittle steel from the column section."
SCOTTISH AMICABLE/GRE BUILDINGS IN ST GEORGES TERRACE –
2ND NOVEMBER 1998
23. These were reinforced concrete structures. It must be acknowledged that property damage was sustained by reason of projectiles being emitted from the demolition.
The statement supplied to the Inquest by Mr. C. C. MacCarron, a special investigation with Worksafe, Western Australia remained untested by cross - examination. Mr. McCracken was not called as a witness in the Inquest. Again the assertions made need to be approached with caution before placing any reliance upon the statement to have any probative value.
CANTERBURY COURT AND COMMONWEALTH BANK DEMOLITIONS
24.
(a) The Commonwealth Bank was successfully demolished by the Loizeaux group in late 1988. The demolition received the approval of the Department of Mines (WA). The building collapsed in it’s own footprint.
This was significant as the historic Wesley Church was located across the road. There was concern about potential for damage being occasioned to that building. It is interesting to note that Mr. Loizeaux sought to comply with and know the statutory requirements for future projects. Mr. Purnell SC for TCL is critical of Mr. Loizeaux for not knowing that using a wrecking ball was forbidden in demolitions pursuant to the ACT Demolition Code of Practice. Mr. Loizeaux was called to give evidence on the basis of his long-term success with the implosion process of demolition not the particular practice prevailing in the Australian Capital Territory. Mr. Loizeaux conceded that he had not read the Code (see also the observations of Mr. G. Barker in attachment F of Exhibit 526C at pages 1 and 2 previously referred to in the segment on the "Reviews to ACT WorkCover"). Mr. Barker refers to the contractors in the tender process most likely being familiar with the Australian
Standard, the Demolition of Structures AS2601 – 1991 but not aware of ACT procedures. I have considered this submission but it is really of no assistance to me in the fact - finding function.
(b) Canterbury Court was demolished in Perth on 10th June 1990. Bulk explosives were used on this project not linear shaped charges.
"I think you have an excellent code and standards. I think it would be extremely helpful if in both cases, venting of contractors and the definition of experience, prior experience and superintendency were more clarified. That they were clearer in terms of sights specific involvement and I think the responsibility should be passed up through some means, some idiom to the owner so that there is a clear linkage in terms of communication, financial and legal responsibility".
ADVERTISING IMPLOSION AS A PUBLIC EVENT
It is the blaster in charge, says Mr. Loizeaux, who must have the final say on whether the demolition is to be a public event. Mr. McCracken bore that responsibility. The final say was clearly not afforded to him. The decision to hold a public event had been made at a very early point in time. It did not give Mr. McCracken a reasonable opportunity to consider his options. The concept of a public event was on the table in early January 1997 generated thereafter by Mr. Gary Dawson, the media
adviser to the Chief Minister long before the tenders were let or contracts settled at a time when implosion was only an option. It is regrettable that Mr. Lavers became locked into that programme. When Mr. McCracken embraced the concept as a good idea he later found himself unable to withdraw from such an event when the project became too burdensome to adequately manage. Mr. McCracken simply acquiesced in an impossible deadline.
28. The final word on the idea of advertising an implosion as a public event comes from Mr. Loizeaux in the J. L. Hudson Department store demolition of 24th October 1998 in Detroit Michigan. This extract is taken from the Detroit News.
"Watch it on TV
These are plans for local TV coverage of the Hudson’s building implosion Saturday.
The sequence of the blast occurs in this fashion: -
Viewing the Implosion
City official stress that the best – and safest – place to watch the implosion is at home. Live telecasts are planned on channels 2, 4, 7 and 50.
If you want to come downtown
Bring the following to protect yourself: -
OPTION OF INDUCED COLLAPSE
29. Mr. J. Sabharwal of Counsel for Mr. R. McCracken (CBS) asserts "the level of control exerted over Mr. McCracken cannot be more clearly demonstrated than by the refusal of Mr. Dwyer of PCAPL to acquiesce to the proposal made to him by Mr. McCracken that the Main Tower Block and Sylvia Curley House structures be demolished by an induced collapse and not by way of implosion. Effective control of the matter was clearly not entirely in the hands of Mr. McCracken". Counsel in his conclusions contends his client discharged his duty of care when he says "Mr. McCracken’s own preference at a late stage was to carry out the demolition by way of an induced collapse. When the offer was rejected, he still ensured that all recognised safety measures were put in place".
"Right. Besides what you’ve mentioned in your evidence in that record of interview, was the topic ever raised besides that occasion?---No, I don’t believe it was.
And am I correct it was never put to you as a proposition that firstly that the buildings had to be induce collapsed?---That’s correct, yes.
It wasn’t?---That’s correct, yes.
Or should be induce collapsed?---That’s correct, yes.
That wasn’t put either?---No.
Was Mr. Fenwick present when Mr. McCracken, can you recall was Mr. Fenwick present when Mr. McCracken mentioned the topic of induced collapse on that occasion?---No, I don’t believe he was, no.
Q. Induce collapse?
A. Yes he did.
Q. Was it ever asked of them whether it could be?
A. Could be?
it ever stated by the contractor or subcontractor that they should be. The submission of Mr. Sabharwal for Mr. McCracken carries no weight on my assessment of the evidence. If the suggestion was to be taken seriously by Mr. Dwyer then a formal written proposal should have been made as it seems to me that such a course would have had, at the very least, an impact on the contractural arrangements.
I accept the evidence of Mr. Dwyer on this issue without any qualification.
34. The ultimate responsibility for the correct application of the methodology rested solely with Mr. McCracken. It seems to me that this submission is made in an attempt to minimise or shift the obligations from the shotfirer which I must reject.
CONCLUSION
35. The weight of evidence satisfies me that implosion is a safe and satisfactory method of demolition. The demolition method requires competent persons at all levels of the process to discharge the function complying with the appropriate codes of practice applicable to a highly dangerous task.
36. The Acton Peninsula project failed systemically in that: -
37. If a proper balance, as to their respective roles, had been struck and respected between: -
then in all likelihood this tragedy would never have occurred or at least could have been averted.