Local ceramic specialist Chris Cumberpatch gave a talk about the existing production sites which we are currently aware of in South Yorkshire, and the crucial importance of how we deal with any future sites in the area.
There are many people who can't tell when a piece of pottery was made.
I appraised a mascara jar that was so old it dated back to the lifetime of the ancient Egyptian queen, Cleopatra, circa 50 BC.
The training session also covered the importance of targeted questions when considering the use of this technique, and the best practice for onsite retrieval, and post-excavation treatment of pottery samples.
The afternoon session was about anticipating and locating pottery production sites, and understanding the available methods and strategies for examining and recording these types of site.
In thermoluminescence dating, this can be used to date buried objects that have been heated in the past, since the ionizing dose received from radioactive elements in the soil or from cosmic rays is proportional to age.