BOAC:
ss41 - thanks for jogging my memory there - I had not visited that forum for a few days, but what IS again of interest there is 'Tailwind' (who appears to know a bit about it) saying on Sunday
"First there are published procedures for NDB or VOR approach for rwy 12 OPRN, however these are non-precision approached. These procedures have their own limitations and minimas as is the case with any approach. "
Any procedures that the country intends to be for public use would appear in their ICAO-compliant AIP. Those procedures would be charted by both Jeppesen and Lido.