@Override
    public void onBlockBurn(BlockBurnEvent event) {
        plugin.log("onBlockBurn();");
        event.setCancelled(true);
        final BlockFace[] faces = {BlockFace.NORTH, BlockFace.EAST, BlockFace.SOUTH, BlockFace.WEST, BlockFace.UP, BlockFace.DOWN};
        for ( int i = 0; i < faces.length; i++ ) {
            final Block block = event.getBlock().getFace(faces[i]);
            if ( block.getTypeId() == 51 ) {
               block.setTypeId(0);
            }
        }
    }