The last chapter illustrated how physically taxing and hard the work in the mine is in general. The reader could already see that the workers gain an extremely low wage for the work that they have to do, that they are paid based on their team's output, and that they have to do upaid maintainance work on the mine (which is a very nice way to phrase it -- the corridors will collapse, burying them underneath, if they don't put up props and timber the walls during their regular work hours). In this chapter, there are several instances that show up how on top of that, they are treated unfairly and exploitatively, as seen by Négrels lines of argument:
The workers did not properly secure the walls and ceilings -- this is because they don't properly understand their work and can't judge the safety issue
In case the corridor really does collapse, the mining company will have to pay for the damage and pay the incapacitated workers a pension or support their wives -- therefore, by not doing the maintanance, the workers are willfully harming the company ("as long as you can get away with it, you think it's none of your business!")
The workers would "cut off [their] arms to fill up a couple of extra tubs a day" -- is he implying that they're greedy here?
For not doing the maintanance, a fine of three francs will have to be cut from their payment (compared to them earning 30 sous each a day and about 25 sous=1 franc iir)
Maheu calmly explaining that they are not being paid for this additional work backfires: Négrel declares that from now on, they are going to be paid separately, but the difference will be taken off the payment per output. The "audacity" of asking for proper payment therefore leads to them being overall paid even less.
We also get a glimpse of some interesting characteristics of the people we already know at this point:
Levaque is said to be "obsessed with the idea that he [is] being spied on" -- however, a minute later, the pit engineer and the overman do arrive, so maybe he's just cautious or has had the most experience.
Négrel, the foreman, tries to appear to the workers as a co-worker by dressing like them and showing presence in the mine, but at the same time is "authoritarian" and "intolerant" towards them. Basically, on first glance, he's just like..."that" type of boss, y'know.
Maheu stays calm faced with Négrels accusations and also naturally seems the one to respond on behalf of the whole group.
The pit is organised by a "military command structure". Throughout the chapter, we see several instances of the effects of it, with the deputy pretending not to hear the protest until he can no longer ignore it or the person operating the elevator refusing to get the team up out of fear of punishment for it. Interestingly, the pit engineer Négrel holds more power than the overman Dansaert, but Dansaert seems to be more hated among the workers. Maybe it's because Dansaert is more present or because he has to actually oversee the measures inflicted by his superior.
Working times seem to be from after four in the morning (when they get up) to one
There might be something about the horses being "wellfed, healthy beasts, the workers that everyone liked"
Négrel and Danseart get to go on the elevator alone in the end, making everyone else wait even longer
Dansaert has a "wide, sensual nose" and I just can't with 19th century physiognomy
At the very least, the narrative calls Ătienne out for sulking "irrationally" about Catherine, but my notes for "she already swung her hips like a little tramp" just read "Jesus Christ"