King Coal by Upton Sinclair

At moments in the midst of this confusion, Hal found himself trying to recall who had worked in Number One, among the people he knew. He himself had been employed in Number Two, so he had naturally come to know more men in that mine. But he had known some from the other mine -- Old Rafferty for one, and Mary Burke's father for another, and at least one of the members of his check-weighman group -- Zamierowski. Hal saw in a sudden vision the face of this patient little man, who smiled so good-naturedly while Americans were trying to say his name. And Old Rafferty, with all his little Rafferties, and his piteous efforts to keep the favour of his employers! And poor Patrick Burke, whom Hal had never seen sober; doubtless he was sober now, if he was still alive!

Then in the crowd Hal encountered Jerry Minetti, and learned that another man who had been down was Farenzena, the Italian whose "fanciulla" had played with him; and yet another was Judas Apostolikas -- having taken his thirty pieces of silver with him into the deathtrap!