That was just the remote sensing method to identify the target for doing the actual field investigation. They still dug the site to get the physical evidence.
Mineral exploration works much the same way.
There used to be one on Vancouver Island
and then Port Alberni
This Article from 2004 suggests that the station was going to be used again ... but a quick search revealed nothing more on this ...
Are you researching or collecting ? If the former I'd suggest checking with the Military History Research Centre at the Canadian War Museum.
(Of course you may have already done this ... ) A search of the catalogue shows a 1863, and a combined 1865-1867 volume with no indication of a 1862 or...
Retiring a plane that is still in production ?
Granted the production rate is slowing but that doesn't equal retirement.
"Cemetery CA40 was made right after the battle and contained 44 Soldiers of The 16th Canadian Infantry, The Canadian Scottish, killed on Vimy Ridge, April 9th, 1917, including William Milne, VC. it was supposed to have been concentrated into another War Cemetery close-by, but clearly this never...
I'd go further back to immediate post WWI and the allied "interventions" in Siberia and Vladivostok ... There was a brief discussion on it all right here a few years back ...
Edit: for link