Hi folks
I'm not convinced it's TROP, as it would need to be used as 'DE TROP'.
On the other hand, PROP can be formed from a rearrangement of PPOR within (could be inside) SUPPORT. There is such a thing as a PROP WALL in mining apparently.
Any further views - it was a toughie this week, but 27 DOWN is the only one I'm unsure of. What does Kayakamina think?