by Okocim » Sun Sep 27, 2015 11:55 pm
Imho placing a minehole without rustroot isn't a waste. You'r going to look for metals that are deeper anyways, and you need to go down L2 to look for metals at L3.
And it's extremely easy to avoid cave-ins when you understand how it works and it's as efective as zig-zag i think.