This figure is practically impossible to reach, I've seen estimates that are more along the lines of the 10k mark, which seems more reasonable. Which is still absurdly high.
If you use the 70k tonnes figure, if you took every operational plane IAF has (+-200), and they used the largest bomb (2000lb Mk84/Paveway Series), the operational tempo per plane needs to average out to 350 sorties. Which, over a 7 month period is practically impossible to achieve. Given F-15 and F16 readiness rates are pretty well known, this sortie rate is impossible.
Anyway, only post i'm making on this subject lest I be accused of diversion again, but these military technical topics are of great interest to me