Then we keep working. [Yes, this is a much better topic. It's something he can channel that earlier feeling into, disguise it as anger. He manages to resist slamming his mug down to the point of shattering it, but the table still shakes all the same.]

Christine is helping me find more gold. If we can create more fulminate, I can use it on the wall the same way I did the train.

[He doesn't mention his doubts to Stephen -- that if they could slam instruments against the doors without a single scratch, there's no chance an explosion would do what he hoped. But it's actionable, and takes them further from the topic at hand.]