Here's a few photos of a mission I was on up at Whidbey SAR April, 1975 when we landed on Mt. Baker and dropped off a group of scientists and all their gear.
Went into an immediate white out, at or just above 10,000 ft, hard to breath lugging all the gear out, breaking through the snow, and clear of the rotors.
Photos taken from back up H-46 above.
Picking a spot
Going in Immediate White out!
Clearing up
Dan