Mining questions

[NowIsGood]

I started mining and i can't surmount some of my problems:
1.How can I get rid of rubble boulders? They stuck in my mine and take a lot of space.
2.Is it possible to mine iron boulder without using ,,pile of wood''?
3.This one would be hard to explain but, If I make a one-block passage through the rocks and then made tunnels on the left and right every 5 ,,blocks'' will I have to place any mine support?

By using blocks I mean one square 1x1 in salem.

[WormPL87]

1. Chip them, and use rubble as pavement/sifting material.
2. Pile of wood is only needed when you encounter a dark rock wall, it's use is to soften the wall to become a light rock wall. You can mine out ore boulders w/o piles.
3. I don't think so, but it might start a cave in if you will want to connect them under area where there are no supports.

[kataklinger]

Youll need mine support anyway you do it. The way you plan to mine the chance for a cave in is a bit lesser but it still can happen.
Once the cave in starts just build the support under it.

[NowIsGood]

Thank you for quick answers.
I have never used ore smelter, but from what is written on salemwiki I assume that the best combination of ore and lime is to place 13ore 12 lime or 14ore 11lime. Am I right?

[WormPL87]

I believe it's 13 ore / 12 lime or 12 ore / 13 lime. Just fill half of your smelter with ore then other half with lime and you should be fine.

[Lihz]

You can also blow up the rubble with boomsticks