Recent press reports have revealed that Shirtcliffe worked on various Australian coal projects while working for both Worley and Sedgman under the stolen identity of qualified British engineer William Fisher.

Although a Brisbane Times report mentioned that Worley had not commented on the matter, a spokesman has since told International Coal News this was due to receiving short notice.

He also revealed that Worley had some robust procedures in place.

“In line with WorleyParsons policies, all work completed by Mr Fisher was subject to cross-checking by a professionally registered engineer at the time,” the spokesman said.

“Nevertheless, WorleyParsons also implemented an extensive review of work performed by Mr Fisher. This review did not uncover any irregularities.”

Using his fake credentials, Shirtcliffe became the construction manager for the CTV building which collapsed and accounted for 115 of the 185 lives lost in the 2011 Christchurch earthquake disaster.

He reportedly worked on the Maules Creek, Codrilla, Boggabri, Lake Vermont and Caval Ridge coal projects.

In 2012 Engineers Australia cancelled Shirtcliffe's registration while the University of New South Wales revoked his Master of Engineering Science in Highway Engineering that he obtained under Fisher’s name.

Shirtcliffe reportedly stole Fisher’s engineering degree in 1969 when the men shared a flat in South Africa.