I frequent Mines as I am about 2 miles from the start on Liv side. I find it to be a great "fix", about 2 hours up to the Junction and back, with some chat time up there when it's open, maybe about 100 times or so now??? Some times up to Lick and sometimes all the way to San Jose and then back over 237 to get home. I've seen most of what everyone said above. Ranch vehicles all over the road, getting passed by the crazy ass SM's about 12 inches close, oh deer moments, cows in the middle of the road, snakes, swarms of bees, very slow HD's that will not wave you by, the list goes on. Had dudes wreck right in front of me. I used to video but they all came out the same so pretty much quit videoing.
This is from 2014 Calaveras and Mines combo. Skip to 2:30 for bike remnants of a victim from the same turn as the "aw fuck" video above, but he was going the other direction and apparently did not slow down much.
https://www.youtube.com/watch?v=mYGSprX_2e4
I will search for more Mines video tidbits.