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Another team working at the same site applied a technique called thermoluminescence dating to bricks used in the site's architecture.

With tales of conspiracy, mishandled funds and even federal neglect, I knew I had found a good story, no matter how buried it was in arcane scientific details, thermoluminescence dating, electronic spin resonance and superconducting quantum interference.

Mr. Rudigier has science: thermoluminescence testing, which dates an object by measuring light levels emitted when traces of the bronze’s casting core, made from materials like clay and still left inside the sculpture, are removed and heated.

Known for its striking rock art, researchers proposed in 1989 that the shelter was the oldest human occupation in Australia, after they dated sediments containing stone tools to 50,000 to 60,000 years ago using the then-experimental method of thermoluminescence.

They used a technique called thermoluminescence to date stone tools found in the same stratum as the fossils.