Bad: It can take a few tries to implement even when you know what to do.
The solution Insane Steve mentioned might save the most lemmings, but since we only need 92% (up to 6 lost), I believe there's a slightly easier solution:
1) After 2nd lemming emerges, raise RR to 99
2) After 5th lemming emerges, lower RR back to 85 (not strictly necessary)
3) 1st lemming bombs as close to the first trap as possible, so that the bombed hole goes under the first trap allowing everyone to pass that trap. 2nd lemming will die.
4) Make 7th lemming blocker after the bombed hole.
5) Because of the RR adjustment, as lemmings 3-6 goes thru the remaining 3 traps, 3 will die but the last one will remain.
6) Have him do the usual mining upwards. However, you no longer need to be precise, because you will keep mining until you are about 6-8 pixels below ground level, then you will bash left to free the blocker.
7) With luck, the basher might even stop bashing at the bombed hole, but even if you lost him, you've just saved enough for 92%.
The hardest part of this solution is to time the bomber, but at least it's less frustrating then incorrectly positioning the miner towards the end as ISteve's solution requires.
