Howdy Rick
Holy Cow dude, you are a SAR stud!!! Thanks for returning our marines to Uncle Sam
The trauma/burn surgeon (Dr. Pax) at Desert Regional said I did not have true 2nd stage frostbite but what he called 2nd stage cold injury. I don't recall whether they took pictures of my hands and knees in the ER. He called for gradual rewarming -- letting nature take it's course. Dr. Pax thought I would make a full recovery since I still had sensation in my finger tips. Only my right big toe was affected. I was wearing all leather Merrell boots and Thurlo trekking (100% wool) socks
As the hands warmed up (by Tuesday morning), they looked awful. I had black tissue on the underside of my fingertips and blisters on top on my fingers between the nails and knuckles. Several knuckles were also blistered. About 12 days after the initial injury (Feb 2), the black tissue began to peel off and I had bright pink healthy tissue underneath.
Currently (3 weeks from initial cold injury), I have residual numbness and the fingertips are extremely sensitive. I still have two broken blisters that are healing. I'll keep track of how long it takes to regain full sensation.
I suspect I sustained the cold injury due to crawling through snow (even though I wore waterproof gloves) rather than due to the ambient temperature in the hut. I doubt it got much below 0 degrees in the hut. It was 17 degrees when I was rescued at 8:30 AM. Compared to when I was shivering, 17 degrees felt "warm."
Your Denali exposure was so much worse. The coldest temperature I've been in was -30 at high camp (19,300) at night on Aconcagua during a storm. However, we were protected in our sleeping bags in our tents.
Forgive my ignorance, but were you wearing double-plastic boots back then?
Miles of smiles,
Ellen