The coffers I opened on the 4th were accumulated over a couple of weeks.
I didn’t play my miner much through the halloween event, but two days ago I started mining silver on Xindus. I opened what I had collected between the 4th and the 12th at the end of my session on the 12th.
Then yesterday I mined all day. Mostly silver seams. So that last pic was the result of roughly 8 to 10 hours of mining, tons of precious metal seams and whatever else on a T6.
Pics of (most of) the output: