A more thorough explanation:

Definition: Claim-jumping is when someone extends the borders of their mining claim to take over other areas or claims that belong to someone else. It can also refer to filing a duplicate claim to take advantage of a mistake in the original claim.

Example 1: A miner discovers a rich vein of gold on their mining claim. They then extend the borders of their claim to include the neighboring claim, which belongs to another miner.

Example 2: A miner files a claim for a piece of land that has already been claimed by someone else. They do this because they know that the original claim has a mistake in it, which they can use to their advantage.

These examples illustrate how claim-jumping involves taking over someone else's property or using deceitful tactics to gain control of a mining claim. It is illegal and can lead to disputes and legal action.