So after talking with "Steve" at climbing anchors australia; good man; I thought I'd post his link via Fixe about what, when, how, and so on vis-a-vis bolt and anchor placing specs. It's pretty much an engineers wet dream kinda thing, but gives you a good idea of how technical it has all become (and hopefully how much safer) since the days of dodgy hardware shop bolts being banged in on the crux by Joe Blow during his 1st ever bolting effort.
One thing internet discussion threads highlighted to me as being crucially important in placing bolts was the tightening force (torque) on different bolts. Too much (easier to do than you might think) and the best bolts snap like chalk sticks, too little and they can pull out when your rope jiggles!
So what I've learnt is that our 10mm Fixe Wedge bolts (stainless Steel) are designed especially for climbing, and required a torque tightening of 35Nm. The anchors we have (also Fixe two bolt chain jobs) should be placed in a vertical orientation (one high, one low) and are way stronger and safer than tradition two bolt horizontally placed bolt anchors (because they have almost zero shock-loading and good minimum angle force distribution).
We will be looking for volunteers to help rebolt at Yongseo sometime soon.