Example #1 – An old Roman Jupiter Pillar
In preparation for restoration work on the Great Mayence Jupiter pillar, an inscription block and one of the five pillar drums were brought to YXLON labs to be evaluated. Based on CT scans, the material and methodology of a 1905 restoration was closely examined.
The CT scans were done with a linear accelerator at our location in Hattingen, Germany. This LINAC unit provides energies up to several mega-electron-volts. High energy is necessary to penetrate heavy dense objects (e.g. stone). Visible at a glance in the tomograms are the various materials the pillar is composed of:
Example #2 – Bronze Age Gold Treasure
- Original sandstone (bright)
- Hollow areas and cracks (black)
- The older addition of gypsum (dark grey)
- Younger addition of gypsum (light grey), and
- Armor made of iron (white spot)
During the construction of a pipeline in lower Saxony, Germany in 2011, a massive metal presence was found in a concentrated area in the ground. For security reasons a block of 50 x 50 x 25 cm was excavated for immediate analysis.
First X-ray inspection with 200 kV resulted in very diffuse images. With more kV at an automotive lab (450kV) a first CT showed an enormous treasure find. But higher Energy was needed. With 6 MeV at YXLON in Hattingen the archeologists could determine very precisely what they found. Dozens of rings, amulets, and more.
The 3D CT model was printed in plastic to support the experts in uncovering the treasure. After month of work the objects of the treasure were exhibited.