His labor took him about one minute to learn. Before him was one of the vents of the mill in which the fertilizer was being ground--rushing forth in a great brown river, with a spray of the finest dust floating forth in clouds. Jurgis was given a shovel, and along with half a dozen others it was his task to shovel this fertilizer into carts. That others were at work he knew by the sound, and by the fact that he sometimes collided with them; otherwise they might as well not have been there, for in the blinding dust-storm a man could not see six feet in front of his face. When he had filled one cart he had to grope around him until another came, and if there was none on hand he continued to grope till one arrived. In five minutes he was, of course, a mass of fertilizer from head to feet; they gave him a sponge to tie over his mouth, so that he could breathe, but the sponge did not prevent his lips and eyelids from caking up with it and his ears from filling solid. He looked like a brown ghost at twilight--from hair to shoes he became the color of the building and of everything in it, and for that matter a hundred yards outside it. The building had to be left open, and when the wind blew Durham and Company lost a great deal of fertilizer. Working in his shirt-sleeves, and with the thermometer at over a hundred, the phosphates soaked in through every pore of Jurgis' skin, and in five minutes he had a headache, and in fifteen was almost dazed. The blood was pounding in his brain like an engine's throbbing; there was a frightful pain in the top of his skull, and he could hardly control his hands. Still, with the memory of his four jobless months behind him, he fought on, in a frenzy of determination; and half an hour later he began to vomit--he vomited until it seemed as if his inwards must be torn into shreds. A man could get used to the fertilizer-mill, the boss had said, if he would only make up his mind to it; but Jurgis now began to see that it was a question of making up his stomach.