Marco, I agree with you on th erelative "dangers2 of Aero-Ektar use and fondling.

But I would be extremely sceptical about interpolating anything to do with the bedrock of Norway. I've worked here as a geologist for 25 years, and there are daily surprises! I think Statens Strålevern might need a little bit more geological competence in their numbers - if the oil boom ends, I'll send them a note.