If it's two or more guys and they eauch had multiple vehicles, you could be stalking someone for quite a while before someone notices.
And they can give each other alibi's.
Like 'I went fishing with Jim, if you don't believe me ask him'. And vice versa.
I mean it was Saturday morning 5 am. Do mining supervisors work those hours on a Suturday?
I can't say to sure what the mine schedules are. That's actually a very good and pertinent question DutchTreat.
I have to think that the mine doesn't close up for the weekends like a bank does, but probably have some long 1o or 12 hour shifts like Panasonic, so that people are working 4 - 10's or so and there are multiple shifts. I'd think start-up for a lot of that heavy equipment would take a long time so you don't tend to take them off line except for regular maintenance.