Hey GS,
Just to clear a couple of things up:
The document doesn't appear to log cell tower hand-offs. I don't know if that exists, but I haven't seen it.
There are three calls where the exact cell tower location is unknown. Two of those are the Whitney Ranch calls you reference. As I explain in the pop-up balloons, these are placed in arbitrary, high traffic locations in Whitney Ranch. Take these exact locations with a grain of salt.
That said, Whitney Ranch is relatively small. I have drawn a box around the Whitney Ranch borders.
ETA: I was the one talking to you with Rolf at the search about the pings. I don't remember saying they were all over the valley. But I do remember explaining what I've learned about cell towers. Basically, they can see a phone up to 30 miles IF there's line of site. If overloaded, they'll hand off a call to the next tower, and if that tower is overloaded, it'll do the same. Since Vegas is flat,
Steve could have hypothetically been in North Las Vegas and had his calls ping off Henderson towers. I think that is extremely unlikely and that Steve was in a close proximity to the towers he pinged off of for two reasons: cell phones look for the closest tower and most calls appear on towers in the same area where he was last seen.
Also, there's something I forgot to mention that might be important or not.
This is the model of phone Steve used.