"100 HDD Viking Link begins". Great Southern Press (Trenchless Australasia, Australasian Society for Trenchless Technology). 16 February 2021. Archived from the original on 19 October 2022. Retrieved 17 February 2021.
"100 HDD Viking Link begins". Great Southern Press (Trenchless Australasia, Australasian Society for Trenchless Technology). 16 February 2021. Archived from the original on 19 October 2022. Retrieved 17 February 2021.