I can't recall any PSAs with that "mountain code." Where have you heard these things? You got a link to any of them?
A tiny country in Northern Europe called Norway...
Sorry, no videos or anything, my 60 seconds youtube/google-search turned up negative. You can find more details about the mountain code in the links of my previous posts.
The background was the easter of 1967 when a total of eighten people died after really good weather turned really bad in the Norwegian mountains.