William Aikman, Popular Science Monthly (1874)
“ Yet, incredible as it may appear, the authority of the proprietors is absolutely necessary to enforce this prohibition. A proprietor of a powder-mill once said to me, that in the face of the ever-present danger, and of the most positive orders, it was impossible to prevent the men, at times, from taking their lighted pipes into the works; that he had detected the men thrusting their lighted pipes into their jacket-pockets to escape observation, as he had unexpectedly come upon them! A triumph of art—to smoke one's pipe in a powder-mill, and "the boss not find it out!" ”
