"Atoms" For Export -- A chemist handling radioactive phosphorus in one of the new laboratories at the Radiochemical Centre, at Amersham. He is protected by a screen of transparent. He is protected by a screen of transparent plastic one inch in thickness. Radioactive Products for Medical Use. The first buildings to have been specially designed to accommodate isotype production processed have been opened at the Radiochemical Centre, Amersham, Buckinghamshire, Eng. At the centre radioactive products are prepared for medical and industrial use. April 08, 1954.