Radioactive dating of trees
On pages 186 and 187 he describes the discovery at Oklo in the West African Republic of Gabon, of the remnants of an ancient site where an accident of geology produced, for a while, the conditions suitable for a sustained chain reaction to take place - a sort of natural nuclear reactor.
As the water vapor condensed and reformed, the reaction would pick up the pace again.
Oklo I've been reading "Impossibility: The Limits of Science and the Science of Limits" by John D.
Barrow and he has an interesting discussion on the speed of light in our geological past.
The objective of the RATE research is to develop a model which is consistent with the radioisotopic data and with the Biblical record of a recent creation and catastrophic global flood.
The need to spend money on analyses of rock samples by reputable laboratories is to ensure that we have data to model that are free of any bias that may have occurred in laboratories where the 'target ages' are known before the analyses.