I don't think this route gets much traffic, but in case anyone had hoped to go down the big stope from Rosa adit to Mitchell's, the little letterbox squeeze is totally blocked by a fall.
The timbers comprising one of the stulls with packwalled sides have given way, meaning this route can no longer be passed.
The west pitch might be passable, haven't tried, but there's some dodgy falling rocks and rotten timbers, so probably best to give it a miss.