There were no markings on the wires, and yes it was the earth wire he hit. It would be a good idea to have markings on the wires, you can never be too cautious with things like that, however everyone flying in to Sibson should be aware of their presence as they will either be based there, or have obtained PPR with a warning about the various obstacles. He had phoned in prior to leaving to let them know he may be arriving and had been duly warned about the pylons, so it was really just a gross error of judgement and he paid the ultimate price...
Sibson is back up and running anyway, the mood is obviously a bit sombre but everyone is getting on with things. I've yet to land on anything other than 24 so have some interesting challenges to come, but I think the pylons are definitely the highest risk. It gets very busy there over the weekend and yes they operate a couple of Cessna 'caravans' amongst other things which are large, turbine powered single props.