From what I have gathered.....everything he brought with him on the trip was left at the campground with the exception of a black and white backpack, yellow boots, a pair of crampons, an ice axe, his cell phone, a red digital camera, his wallet, the items he was wearing and some pages out of a hiking book and the few items that were found to be with his car in the shop. He was planning on leaving on July 18th when his car was supposed to be ready for him to pick up. He had paid for his stay at the campground for the night of the 16th and 17th. The camp host threw all of his belongings in storage when he hadn't returned (not sure exactly when this occurred.) He was on his cell phone texting friends the afternoon and evening of the 16th up until approximately 9:30pm (I don't have the exact times in front of me) normal conversations, nothing out of the ordinary, no mention of what he would be doing the following day. The pings from his phone put him at or near the campground, where he was believed to be, during that time period. A text came into his phone close to 3am PST on the 17th from a friend back home. I am under the impression that his phone had been powered off and then turned on for a very brief period at that time and that is why the text was received. It is my understanding that the phone may have been in another location in the Mammoth area (not the same location as it has been the night before) when that text was received. No further cell phone activity; it is believed his phone battery is dead. I believe he checked into the campground with his friends near the end of June. Hope that helps!
"Gear:
He was carrying a large black/white backpack, yellow LaSportiva Nepal Extremes boots, crampons, and one ice axe. He did not have his tent, bivvy, sleeping bag, stove, or green heavy jacket indicating he only expected to do a day hike.
Last known contacts:
His Father via phone: July 16th
Friend via text (no info): night of July 16th"
http://www.supertopo.com/climbers-forum/2195321/Missing-friend-in-Mammoth-Lakes-area
ETA - "wallet"
raying:
