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• The well was about 80 m deep, and drilled at a slight angle towards the buildings.

• Separated from their surrounding rock, the fossils are dissected with fine chisels and delicate drills and then photographed.

• Dental inlay involves drilling holes and inserting various materials therein.

• Scrapers, drills etc. are shown and 'explained' by displaying them next to a modern variant.

• Several edges of this plaque appear smoke-smudged, and drilled depressions probably held inlays.

• Each palaeomagnetic site comprises between 7 and 12 independently drilled 2.4-cm-diameter short cores in a single rock unit.

• Most of these boreholes were drilled in the 1970s and 1980s for water pumping and are out of use at present.

• In most cases these holes were drilled bilaterally.