Important message: EA advises that myPortal will be unavailable from 11:30pm Saturday 15th June to 12:30am Sunday 16th June for Planned Maintenance. EA apologises for any inconvenience caused.

Event Status
Registration Open
Registration Closes
Wed 19 Jun 2019 - 6:00 pm
Event Date
Wed 19 Jun 2019 - 5:30 pm to
Wed 19 Jun 2019 - 7:30 pm

Add to: Google Calendar | Outlook/iCal | Other

Key Speaker(s)
Colin Randall
Engineers Australia Harricks Auditorium Ground Floor 8 Thomas Street Chatswood Australia
Registration: EA Member and ATS Member: $0.00 ($0.00 excl. GST) Non-Member: $30.00 ($27.27 excl. GST) Naval Historical Society : $0.00 ($0.00 excl. GST)
Maximum CPD Hours
Australian Tunneling Society (ATS)
Event Contact
Contact:Engineers Australia Member Services Phone: 1300 653 113 Email:
Sydney Historical Tunnels Garden Island Tunnel Complex Register

Join Colin Randall, a mining engineer and a volunteer for the Naval Historical Society of Australia, for an informed discussion on Garden Island Tunnel Complex, built during World War II.

The Garden Island Tunnel Complex is unique.  This complex of tunnels and chambers provide evidence of the desperate days of World War II.
Just four days after the Japanese attack on Pearl Harbour in December 1941, tunnelling commenced on the complex to provide Air Raid Protection requirements for the skilled workers on the Garden Island Naval Base.  Designed initially to protect 1400 men standing up, it was expanded to accommodate 2500 men.
The subsequent surrender of Singapore, the bombing of Darwin, the attack on Sydney by Japanese midget submarines and ultimately the shelling of Sydney on 8th June 1942 created imperatives that drove the excavation of the six interconnected tunnels and multiple chambers.

Colin Randall is a semi-retired mining engineer with 50 years of experience in underground and open cut mining.  Since October 2018, as a volunteer in The Naval Historical Society of Australia, he has researched theGarden Island tunnel complex.  As a teenager he lived on Garden island and was well acquainted with the tunnels.  His first entry into a tunnel was in 1955 on the Snowy Scheme when he lived at Island Bend.