Originally Posted by T.G

I can't say for certain that such a system does not exist, or was not tried at some point in the past, but I've been to a number of factories and I've neither seen, nor heard of, any apparatus fitting that description.

I'm thinking that what they might have been talking about was the aforementioned blast freezing process where a freezer room is stacked, then brought down to extreme sub-zero temperatures very rapidly and held there for a few days. The eggs that aren't shattered by the rapid temperature drop and freezing should be rendered non-viable by the long period of sub-zero temperatures.