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