Well, you gotta remember, we were barely getting online in those days. I had contact with them, helped them, got help from them a time or two (they had Lachmann on their radar too), but there wasn't a forum like this. No public one at least. And they never recruited like you folks did.
What I do know is that they were driven by the same things you are. The search for the lost collection. They thought it would lead them to the truth about the world.
Not sure how many Mountaineers there were in the end. I knew Ascender, Augernon, and Knatz, but I heard other names like Tinkerdown, Huma, and Saberlane. (I'm in my fifties now so apologies if those last ones aren't 100% right.)
I know they got close to something, never completely said what, and then everything went quiet.
They'd covered the tracks to their public lives pretty well so I only ever heard what happened to them second-hand. They got too close to something dangerous or something came for them. By then I'd found more of the "Low World" that the '94 Mountaineers had been a part of. A loose web of underground organizations, fronts, and societies like the Mountaineers.
Turns out people had been wondering about and looking for the truth for decades. I only came into it completely after the Lachmann disappearance. Anyway, through the Low I heard that the Mountaineers had been scattered like leaves because of how close they got to something.
I never figured out what the "something" was. And never knew if they'd been scared off, forced out, or killed.
I heard the name Ascender again when he and the new Mounties went public with the MAGIQ Guide, their version of an insurance plan against being quietly wiped out again. And I only found out about Augernon being in a hospital when Ascender posted about it here.
Seems the truth had been plied from their brains, and Ascender was the only one who escaped mostly intact.