I read it that way also, a failure to proritise what should be mandated safety checks prior to delaring the line open for use, caused by a cascading chain of jamming too much work into too short a shift.

My father had many stints on many mine sites as a leading foreman in charge of shift workers and yard crews .. it's been Occ Health and Safety protocol since the 1970s (in Australia at least) to post game events that result in death, injury, or even a near miss in order to adapt procedures to minimise similar things happening again.

As I read it, at the time of this accident they hadn't gotten to the stage of mandated safety checks and trial runs prior to live runs.

Incidents like these are why many workplaces have check lists and strict protocols.

The working at night part is largely irrelevant to the actual accident, in this part of the world we run the longest heaviest trains in the world 24/7/365 largely fatal accident free and have dedicated safety officers looking out around the clock.

My company tracks near misses with that same progams. That is any situation where someone could have got hurt but by luck either nobody was there when the accident hapyened or someone noticed something that is wasn't procedure to look for.