
(More SS's at https://imgur.com/a/juMCE)
* Inserting from a belt works just fine, as expected.
* A chain of Box => Inserter => Empty Space => Inserter => Miner works.
If I put ore to the box, the inserter will grab some, and insert it as fuel, but it won't refuel. If I add more coal to the box, the inserter will once more grab coal, and transfer it.