First Pictures Of Britain's Atomic Research Laboratories -- One of the first pictures taken inside the laboratories of Britain's atomic energy research establishment at Harwell, Berkshire. The picture shows a phase ***** the production of Radioactive Isotopes. A sample is being taken out after irradiation in a Gleep. The face of the pile is in the background. The sample is in an aluminum container, which during irradiation is placed in one of the holes in the graphite blocks (bottom right) and the latter are pushed manually in and out of the pile through a hole in the concrete shield. November 02, 1949.