I remember using an MRD at Manston. We were supposed to clear the runway centreline first and then do either side. Unfortunately there was a slight sideways incline, so the melted snow turned to ice under the' lower' uncleared snow causing even bigger problems.
We also used to have snow-blows - a sideways mounted jet engine on a trailer towed by a tractor and used to clear the taxiways. They were fun too.