Trying to remove 50 inch oak tree stump with Bobcat backhoe. Struggling

[BucketHoe]

Knowing now what you had to do to get to this point, I think you should have just sold the property

 

[California]

The down hole is the chimney and the side hole is the draft,---making a rocket stove out of the stump! It will work!

And here's a genius idea for a bellows: Fill a garbage bag with air then squeeze it into the side hole. Repeat as needed. Instant blowtorch!
https://www.reddit.com/r/Damnthatsinteresting/comments/odmz9x