There's some new info out at: http://dailynews.yahoo.com/h/nm/20000803/ts/crash_concorde_dc_30.html
http://www.airliners.net/open.file?id=99601 The gear item mentioned is clearly visible in this photo. Note the proximity of the gear truck to the front of the pod intakes. Conversely, imagine the location of the (recessed) engine cores with respect to the tires.
http://www.airliners.net/open.file?id=54005 This photo is *not* of a Concorde, but is a close-up of a similar gear truck after blowing tires upon landing. (767 major electical failure inbound to BOS). Note the position of the truck's wheel/brake assemblies, and the reduced ground clearance. Also note that this aircraft was DE-accelerating, and not operating at the higher (takeoff) speeds as was the Concorde.
http://www.airliners.net/open.file?id=98245 Another good view, this one from head-on: You know where the engines and fuel tanks are.
I'm not posting these in any way to re-hash the various theories out there. I just wanted to post the latest news and some appropriate reference photos all in a single place so some of the possible failure modes might be more readily understood and/or discussed.
Still waiting for Pierre Sallinger to chime in on this accident...