Originally posted by Renlish:

Dig a diggy-diggy hole away from base and just drop stuff in it. The obliterator works too (once you have all the mats to make one) but make sure you build that away from base too. Bad stuff happens.

My obilterator is inside my main base just far enough away from any other structures that its not a problem. That way I can take the coal out of the obliterator and take it inside where my smelter and blast furnace are.