To which phase of disposal of stolen goods does altering serial numbers belong

The alteration of serial numbers belong to the "Recovery of stolen electrical goods" phase.

NC, sterilization or removing a serial range is usually charged as a secondary offense aboard a thievery offense. Generally, a person who alters or removes a serial range is doing this to hide the actual fact that they either scarf the property or received transferred possession. As such, there's a public interest in toilsome people who have interaction during this activity.

Carbon-14 has a half-life of 5,730 years and most igneous rock is older than that.