There were two explosions and they were about 7 minutes apart according to the seismologists, which is a long time when your body and clothing are on fire. A doctor who survived reported a loud buzzing during the interval. He later appeared on TV and recanted his testimony. Sounds like Michael Riconsiuto's "blue death".
Let's not forget that scoundrel, Clinton, who actually set the date for the OKC bombing. He was governor of Arkansas when sentencing the purported perp, who supposedly was the reason the Elohim chaps picked that day. Come to find out though, practically everyone at Elohim was an FBi informant.
you prolly remember that there were a couple of independent verifications of the two explosions posted here at FR way back when.
iirc, one was made from a telephone recording device in a lawyer or judges office across the street from murrah.
a second is referred to as the water board recording of the two distinct events coming about 4.2 seconds apart.
you may recall old FR poster, michael rivero. he posted a lot on this subject and may still have some of this documentation on his website???