It was understood, also, that several New York officials were to be in the party, and every department head in the mines was ordered to leave nothing undone to have all things under his charge in perfect order. "We are about the only ones whose work won't show," complained Jarvis. "Why not, Bob?" demanded Steve. "Why, a track is a track, that's all. It doesn't show all the work we have put on it. They'll just walk along on our job while they are admiring the other fellow's work." "I think you are in error. The officials of these big corporations are all practical men. Most of them have had personal experience; some of them have not. I don't know about the New Yorkers, but I know Mr. Carrhart has been all through the mill. He will notice everything; you see if he doesn't." Three days after this conversation the visitors arrived. The Iron Boys were engaged in other parts of the mine and did not know of the arrival. Along in the early afternoon, however, their duties led them to the seventeenth level. Of course they were on opposite sides of the mine, but as it chanced each was heading for the chutes on that level, where their patrol would end. After a time a bobbing candle appeared far down the level. A moment later another appeared coming from the opposite direction. Two young men came swinging along the tracks. Their step was springy and there was an alertness about them that at once attracted the observing ones. These two were Steve Rush and Bob Jarvis. They approached each other rapidly and waved their hands in greeting. "Bob, there are the visitors," said Steve in a low tone. "Oh, that's so; I hadn't noticed them. When did they come in?" "I do not know. I had not seen them before." Eight or ten men were assembled on the platform where the tally-board was located. The superintendent was holding an earnest conversation with them, the visitors keeping up a running fire of questions and comment. They had been through part of the mine and were discussing conditions and proposed improvements. The boys had matters of their own to discuss, so they gave little attention to the gathering, so far as the latter observed. But the lads were interested, just the same. "I suppose most of those fellows are millionaires," said Bob, indicating the group by a jerk of his thumb in their direction. "They are not fellows, Bob; they are gentlemen," corrected Rush. "How do you know they are?" came back the quick question. "It is reasonable to suppose they are. I know one of them is, for I have met him." "Who is that?" "Mr. Carrhart, president of the company."