The figure of 2.5 million curies / 90 PBq on this article page has been queried on the talk page for Windscale. Can we have a source for this figure, please? I've seen a figure of 3 x 10^17 Bq (of Xenon 133) quoted in Radiation and Health: The Biological Effects of Low Level Exposure to Ionizing Radiation Edited by Robin Russell Jones and Richard Southwood, published by John Wiley ISBN 0-471-91674-9. 07:58, 2005 May 11 (UTC)