I think the temperature at that altitude is ideal for mining (It also bears the risk of the equipment freezing!). Now if only we could stick together a couple of S9's and hook them up to a little solar power generator in there... That would be even more amazing!
Hook it on what?

Temperature in space close to Earth is around 10 Celsius, there is no risk of freezing and without air there is actually no air convection and heat is lost through radiation....it gets complicated.
But that balloon was flying in the stratosphere and at those levels the average is -20-10 C.
...
Really? Haven't you heard of portable solar power generators? Here, let me show you the Google search results for that:
https://www.google.com/search?q=portable+solar+power+generatorAnd 100,000 feet above the surface level is not by any means "close to Earth" AT ALL!
And there is a REAL risk of equipment freezing at that altitude, because temperature is around -50° Fahrenheit or less (-46° Celsius) up there, not "-20-10 C."
Unprotected electronic devices in general (and mining rigs in particular) are not designed to operate at those temperatures.
100 000 feet is indeed close to Earth, everything is the stratosphere can be deemed close to Earth when we talk about space.
Second, you took the temperature from 100 000, but that is just a "record" that doesn't have anything practical in it. If you were to hook your miner on a balloon you would go to the limit at which typical weather balloons fly and that is over 120 000-130 000 feet up, at that level it's not that cold anymore.
It makes no sense to stay at exactly 100 000 feet which is just an arbitrary point by
human american standards, as half of the worlds doesn't have a clue how long a foot is.
Above 40 km

up the
average temperature is indeed -20 C.
Now, you would have to re read what I wrote before using caps:
Temperature in space close to Earth is around 10 Celsius, there is no risk of freezing and without air there is actually no air convection and heat is lost through radiation....it gets complicated
I said in
space, close to Earth, and no, a miner will not freeze in space!
I'm not even going to comment on the portable solar generators....common, be serious!!!!
Lol! Do you even know what common sense is, Mr Proud Non-American?! And why do you imply that Americans are not human? Did they hurt you in your past?!
BTW, you don't have to take everything you read on the Internet literally. No offence, but it makes you sound not so intelligent.
And I am being serious. Seriously, look them up. Portable solar power generators are available in all sorts of capacities and can be used in there if protected properly.
The other parts of your post is not worth answering because whatever I say includes common sense and you don't want to include that in your comprehension skills so you can "win" a fight over the Internet.