SRA
In the 70's and early 80's controllers practised SRA'S - sometimes live, sometimes on (primitive) simulation. A dedicated radar map was required, and if memory serves, ML had one for only one runway - RWY 16* (which is why Centaurus might have had trouble with 27). At one time there was a requirement on TMA endorsement and every year or so to demonstrate ability to conduct an SRA. Eventually the maps, techniques and practices were dropped, the reason possibly being that other modern aviation equipment and redundancy made SRA unnecessary.
*memory a bit dodgy here.