I added a powerline that starts just south of Safford, AZ and runs toward Duncan, AZ. From what I read, this line is called a subtransmission line, so I labeled it a power=minor_line. Currently, I am concentrating on finding poles that are endpoints to segments of the line and I hope to fill in the rest of the poles, eventually.
I am also adding the access road that runs under the line. I find it difficult to add nodes to the road (using JOSM) without accidentally connecting the road to the power line.
I've also noticed that the area around South Barney Lane has changed considerably. Currently, there is a road named Emory Road on the map, but I can't find it. There is a road named Busby Drive that has some similar points to Emory Road, so I guess I'll put Emory Road as its old_name. In the next several days, I'll make some corrections to the area.
When I started mapping the area earlier this year, I was worried that I'd run out of things to do, but every time I add a feature to the map, I find plenty of other features that need mapping!