The new high-security unit will be fitted out with a state-of-the-art security system, including thermal detection cameras, motion sensors and zoom cameras, as well as electrified fencing.

About two dozen Goulburn and Southern Highlands businesses have contributed to the ongoing construction of the new 48-bed unit, which will increase capacity at the High Risk Management Correctional Centre, known as the Supermax.

Corrective Services NSW (CSNSW) Acting Commissioner Luke Grant said they intentionally sought local supplies and labour to ensure the region reaped maximum benefit.

“We are always looking for opportunities to give back to the regional communities that support us and this construction project has allowed us to invest $1.2 million in local businesses, materials and trades,” Mr Grant said.

Member for Goulburn Pru Goward said some of the businesses were receiving up to $150,000 worth of work as part of the build.

“This upgrade to existing facilities at Goulburn Correctional Complex has been a windfall for many local contractors, with several businesses’ gaining contracts and funnelling jobs back into the community,” Ms Goward said.

The work is funded as part of the NSW Government’s $47 million investment in corrections to combat terrorism.

Minister for Corrections and Counter Terrorism David Elliott said the expansion of Australia’s most secure prison facility will strengthen operations and improve the management of terrorist and radicalised inmates.

“This new addition to the state’s toughest prison will allow us to safely and securely house up to 75 high-risk and terrorist inmates, as the number of terrorism inmates in NSW custody continues to grow,” Minister Elliott said.

CSNSW is managing 23 inmates convicted of terrorism-related offences and 16 inmates on remand for terrorism-related charges.

There are also a number of inmates of National Security Interest, who are not charged with terror offences but require additional monitoring.