The tank Explosion discussion was hot and heavy a few years back prior to Luxfers trade-in policy to get suspected tanks off the market and prior to VIP's using eddy currents to check for cracks. It seemed to die down until this incident. The power of a tank exploding is huge. Two or three years ago the dive shop in Sebastian, Florida was blown up when an old steel tank came apart while filling. This killed the owner by decapitation, blew out the supporting wall into the parking lot, fill tank, and collapsed the ceiling. The owners wife and customer only a few feet away were not physically hurt, deaf maybe, in shock, and of course horrified, but otherwise unhurt.
The shop was closed for a year until a new owner bought it. I didn't witness the explosion but did stop by a few weeks later and was amazed to see cement blocks thrown 30 feet out into the parking lot.