 |
 |
Yes, the Windscale accident was on 10 October 1957 and the report into it was published on 8 November 1957. For more info see http://news.bbc.co.uk/onthisday/hi/dates/stories/november/8/newsid_3181000/3181342.stm On another point from the original question, the higher the atomic number of an element the better it will absorb X-rays (or gamma rays). The atomic number of barium is 56, whereas lead is 82, so lead should be better for absorbing the gamma rays. However barium sulphate may at the time have been cheaper and easier to obtain than lead. ----- Original Message ----- From: "Alan Rhodes" <[log in to unmask]> To: <[log in to unmask]> Sent: 24 September 2004 14:21 Subject: Re: [MINING-HISTORY] barium cement > Surely that was in 1957. > > Alan Rhodes > >