Where were Adam Harmon and Jacob Castle living in 17

 1746 is the year we find Adam Harmon and Jacob Castle listed as working on the road from the home of Adam Harmon to the North fork of the Roanoke River.  For more information about this go to my previous post:

https://castleydna.blogspot.com/2024/12/time-line-for-fg-2.html

In that blog post I established where researchers have agreed that Adam Harmon was living at the time.  At first I assumed that Jacob Castle would have been living close by since they were on the same road order group.  But I have been reading Mary Kegley's Early Adventurers on the Western Waters Vol III, part 1 Section 3 that starts on page 217.  She has convinced me that Jacob Castle's land was located on the land that became the lead mines. Her information is wonderful.....but my favorite is her mention that it is said that Jacob Castle bought his land ....well can't find this information right now....and so not sure it is from Mary Kegley and if I spend the time looking I will not finish putting in the maps ....I'll update when I have time.

So now I believe that Jacob Castle was living on land that became the Lead Mines and Austinville

map from: https://www.arcgis.com/home/webmap/viewer.html?webmap=75dbb34a4b8f40ee9af4a8b974d049ed&extent=-82.6142,36.1961,-79.3759,37.5168

Need to put map here showing Adam Harmon's home area.  

The distance between the two men's land was about 40 or 50 miles.  Quick research on the internet would make me guess that it would take a day to make the trip because of the rough terrain and lack of roads.  So the question in my mind at this point is did these men get together only a few times per year and work for a week and then go home?  I will need to do some research on "road gangs" in Colonial times.