For the next four or five years, a special drill designed at the AAD will slice through the ice pulling up 3-metre cores at a time until the drill hits bedrock, almost 3km down. […] The idea to go chasing the world’s oldest ice was included in a 2013 report from Dr Tony Press, the former AAD director and Antarctic scientist who set out what Australia’s priorities on the vast continent should be. 2023 January 15, Graham Readfearn, “Time tunnel: why an Australian expedition is drilling through 2.6km of Antarctic ice”, in The Guardian:
(abbreviation, alt-of, initialism) Initialism of Azure Active Directory.