Just in from Thane Young at the Department of Labour. If you have recently purchased carabiners from SpanSet it would pay to give them a thorough check over. SpanSet are a UK based company, but the product is distributed in Australia (and New Zealand) through SpanSet Australia.
The SpanSet 30kNcarabiner, pictured below, failed under a minimal load of 150kg. The carabiner was being used on the Yarwun 2 Project in Gladstone, Queensland, Australiaon 20 July, 2010. It was part of a batch of 60 recently purchased and first used on 10 July.