Unfortunately, a house fire destroyed over 90% of my photos in 1982, so I have little to contribute by way of personal photos. But Willies post about the Argo's, and the 3-wheel trailer-mounted drill rig reminds me of the Nickel exploration that was going on in the '69-'73 period around the Goldfields of W.A. - when the nickel price was ballistic, and the Poseidon Nickel shares were going the same way.
There was a lot of nickel exploration going on in the area South of Kambalda, around Widgiemooltha, at the time I turned up in the area, after leaving the Army at the finish of my National Service on 1st Oct 1971.
The older brother, my business partner, had gone to the Goldfields from the Wheatbelt while I was in the Army, and that was because there was a massive drought in the W.A. Wheatbelt between 1969 and 1972, and he ran out of work. But the Nickel exploration teams were pegging like crazy in the nickel boom, and dozer work was plentiful, so the brother took one of our Cat D6C's up to the Goldfields, and made good money clearing gridlines for the peggers.
When I rolled up, we were doing gridlines in the Widgiemooltha area, and the two main Nickel companies operating there were the original (U.S.) Anaconda Mining, and a Belgian company called Union Miniere. The area is full of salt lakes, with Lake Lefroy and Lake Cowan being the biggest, in a string of salt lakes that run from Kambalda to Norseman.
There was a lot of drilling to be done on the salt lakes, but getting out on them was a real hassle. They often contained areas of deep mud under the salt, although some areas of the salt lakes were quite firm, and could be driven on. The only way to get to the spots requiring drilling was building elevated roads, like jetties, out across the salt. As you could imagine, this was bloody expensive.
But Union Miniere had a neat little beast that could run around on the salt anywhere. I had a photo of it, but its gone. It was called the Cuthbertson Tracked Landrover. This Landrover was used substantially to get around on the lakes, and it was neat to watch. They were built by a Scottish company, who are still in business - but they no longer build tracked conversions.
I wasn't aware until I did some research, that Cuthbertson only built about 15 or 20 of these units, before they ceased production of them. I have no idea what happened to Union Miniere's Cuthbertson Landrover, maybe it wore out and was scrapped.
https://silodrome.com/tracked-cuthbertson-land-rover/
https://www.lrukforums.com/threads/tracked.256227/