Press the ] or [ key and select the 'bomb' or whatever it's called (the thing that mara picked up and she said 'u know, people shouldn't be lying these around, someone could get hurt.') well go up to the dome, and select that bomb thing and press enter.
Hope that helps.
"Without strife, the victory has no meaning. Without strife, one does not advance. Without strife, there is only stagnation."