Thurst says nothing, he simply kneels before the plate and begins to examine it closely, as if he were making precise technical calculations in his mind. Before any onlookers can stop and laugh at the absurdity of the scene the dwarf unhooks his mechanical mace and gets to work.
The mace is unlike anything anyone in the group has seen before. With only a few subtle movements, and a fair bit of whirring and clicking, it is transformed into a shape more appropriate to the task at hand. Those watching are so caught up in trying to figure out what it is they are looking at they don't realize for several moments that the sewer entrance is open and ready.