It isn't on a plot. Its in the wild of the nether and no where near anyone else. I have built about six of these on this server to date and never had any issues with the lava hurting anyone or escaping. the grinder is built, i'm just waiting for lava for the on off switch. you can check it out yourself, it wont leak and there's no way of someone stumbling into it cause of the wg. the big thing about this is that I, and I know many others have had this done before, the issue of whether it was against the rules was raised then and it was deemed ok. What has changed? this is going to effect me greatly as I have a few of these grinders and i'm currently building 2 for other people.