I have looked at the 1792 Daniel map of the UNC area a number of times before. And of course, I noted the Jones Saw Mill shown on Bolin Creek:
I had always assumed that the Jones Saw Mill was the same mill site that was located about where Martin Luther King Blvd crosses Bolin Creek (that is, the A J Brockwell Mill as shown on the 1891 Tate Map of Orange County).
But just this morning I was experimenting with superimposing some of the later maps of UNC onto the 1792 Daniel map to see what that might reveal. I was surprised to realize that the road next to the Jones Saw Mill is not MLK Blvd, but rather Franklin Street. It should have been obvious because the map identifies that road as going to Oxford, which would make it essentially US-15. Franklin Street is US-15-501 business and in that sense it goes to Oxford (among other places. Also MLK Blvd goes to Hillsborough, not Oxford.
Here's what the two maps look like when pieced together (shown at a slightly different scale than the map above):
So apparently there was an additional mill site on Bolin Creek: The Jones Saw Mill. That site was at the Franklin Street bridge over Bolin Creek, about where the Sunrise Biscuit Kitchen is today.