On December 10, 1967, the US Atomic Energy Commission detonated...

On December 10, 1967, the US Atomic Energy Commission detonated a 29 kiloton underground nuclear explosion to test the nuclear method of fracking for natural gas.
It was the first of three such tests conducted in the US which was a part of a wider program (called Operation Plowshare) to find civil engineering uses for atom bombs.
Project Gasbuggy was of direct relevance to Central Australia because great expectations were held of this method for potential use in the new Mereenie gas field.
In fact, Magellan Petroleum had already applied to the US and Australian Atomic Energy Commissions for a licence to conduct nuclear fracking in The Centre.
Hopes were dashed when the gas extracted from the test sites consistently proved too contaminated with radioactive particles to be safely used; and the new method of hydraulic fracturing helped bring to an end the research program of Operation Plowshare in the mid 1970s.