Two employees focussing on cleaning the excavator

Sydney Harbour Control Tower Deconstruction

Barangaroo NSW
Barangaroo Delivery Authority
10 months 
Completed 2017


The Barangaroo Delivery Authority commissioned Liberty Industrial for the deconstruction of the redundant 87m high Sydney Harbour Control Tower landmark consisting of a reinforced concrete column topped by a stainless steel and glass observation deck and operations room. The works formed part of Sydney’s multi-billion dollar Barangaroo Precinct Development Project.


  • The base of the tower stood in the Cutaway, a huge underground cultural space under the Headland and rose through a void above the Headland Park.
  • The site was located in the middle of public space and challenges existed in minimising the impact on nearby residents, businesses and visitors to the Headland Park, where many heritage-listed buildings were present.
  • Given the high profile nature of this project and the significant degree of public interest, transparent and continuous stakeholder management was also an essential component of the project.

Robust Solutions/Exceptional Outcomes

Robust solutions

  • To enable continued use of the below-ground event space, Liberty developed an innovative and carefully considered deconstruction methodology, unlike any other, performed in Australia to date.
  • Development and implementation of a comprehensive environmental monitoring program to monitor dust, noise, vibration and meteorological data, ensuring compliance with strict regulatory approval conditions.
  • All asbestos and debris were removed inside the tower which was made possible with the erection of a circular mast climbing platform system in combination with Brokk remote- controlled demolition excavators and the assembly of a 20m-high ‘dust- proof wall’ which separated the works from the underground cultural space at the base.
  • Construction of a brand new ground slab to extend the underground event space, as well as the reinstatement of surroundings and construction of new landscape areas.


Exceptional outcomes

  • The project was completed to the client’s expectations and delivered on budget, on schedule and without issue or injury. We were able to achieve minimal disruption to the local community and upheld rapport with all project stakeholders.
  • Project resource recovery exceeded 98% of all materials with only 2% of the waste generated going to landfill.
  • Liberty Industrial was shortlisted as a Finalist in the ‘Urban Demolition’ category at the 2017 World Demolition Awards.

Value Add


Closure Consulting

Long-term closure planning, budgets and redevelopment strategies for redundant sites, including Early Contractor Involvement and detailed estimates.


Demolition Simulation and Modelling

With exclusive license to demonstrate using Extreme Loading® for Structures (ELS) software developed by Applied Sciences International (ASI).



Use of best approach demolition and dismantling such as explosive using world class fleet, safety and engineering methodologies in explosives and rigging.


Asset and Resource Recovery

Comprehensive waste and recycling management to contribute to the circular economy to extend the lifecycle of materials.



  • 2017 World Demolition Awards, Urban Demolition Award - Finalist

Managing PFAS in Site Closure Remediation


Bioremediation for Closure


Demolition and recycling phase completed for first major closure project for Rio Tinto at Argyle Diamond Mine, WA.

integrated capability responsible decommissioning

decommissioning closure and asset liability consulting

consulting risk management engineered solutions 3d simulation

and simulation liberty modelling dismantling and asset

dismantling and asset recovery synchronised safety

deconstruction resource recovery and recycling expert delivery

high expert industrial delivery reach consulting

expert delivery high reach explosive induced collapse

collapse specialised contracting decontamination

decontamination cleaning remediation environmental stewards

stewards risk mitigation and management waste disposal

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