Known bugs: if multiple people throw items at the same time (one a mine, one not), both will become mines.
If you want to make the mines less visible, change the /entitydata command's "CustomNameVisible:0" to "CustomNameVisible:1".
Known bugs: if multiple people throw items at the same time (one a mine, one not), both will become mines.
If you want to make the mines less visible, change the /entitydata command's "CustomNameVisible:0" to "CustomNameVisible:1".