Cracked blocks....fixable?

[PxTx]

I have seen a repair where a machinist will drill holes at each end of the crack, which is supposed to stop the crack from traveling. He then continues to drill in between the crack creating a series of holes which touch each other. These holes are then tapped for threads. A bolt or somthing is then threaded in each hole, with the threads locking into each other with a slight overlap at the 9 and 3 o'clock position. The bolt heads are broken off so that the next bolt can be tapped right next to the last. Kinda get the idea?

Paul T