How long do you estimate that you've spent on this rock?

The other day I repeated an experiment I did a while back to compare this method to just mining the top of the rock. The results were pretty much the same.

Mining the exposed portion of the rock took about 7 minutes, and I got around 55 copper.

I didn't exactly time this method, since I just had planned on comparing yield, but I did record a good portion of it.

First I dug around the rock, which took about a full game day, so about 20 minutes. Of course, a good portion of the tock was too low to dig. Another portion was under water. I spent another couple of game days getting to about where you are now, so, generously say 35 minutes.

I almost died a couple of times jumping on to the top of the rock and either missing or falling through when the rock broke. After that I broke the rock from the bottom using steps to reach the rock. and finally got it all mined.

I recorded the latter part, after clearing the edge, and it took around 45 minutes total. That's over an hour on one rock, and I got about 110 copper.

In summary, it took me over an hour to get 110 copper, and 7 minutes to get 55 copper. I did get twice as much copper, but it took almost 10 times as long.

I'm wondering if any others have done a similar experiment and gotten different results. Both times I've tried it, it was a grueling experience, and I can't imagine why anyone would choose that method.

FWIW, that method works very well for silver.