Gun powder from the old guns was overpowering with the smell and threatening to make them lose their sight with the thick smoke becoming more and more prominent.
The other problem they facted was the fact that the little noise their guns made was now attracting more. They weren't shocked anymore when they met the intruders, no gun had ever been fired inside the walls of that mine until today.
That told everyone within it that there were dangerous people attempting to either expose the slave mine or steal the minerals in there.
While this mineral should have been all for Sanctauri to use, Blakeson and his people decided a long ago that they would monopolise it then sell it to the government.
That was the business of this mine, they sold it for billions to the government and the government kept the lights on in Sanctauri, to them that was little to pay for, not knowing that they were also being exploited.