Looks good to me. In action and results you are 'stoker-feeding' your stove..
by that I mean a smaller amount of coal, it is allowed the heat and burn off it's volitiles at a controled rate, and once it has burned off,
you then add some more, in a controled rate and manner, allowing the gradual heating and burn-off.
I wonder what the first guy, who had experience burning only anthracite thought when he lite off some Bit coal?? That the coal was possessed?
The smaller, more frequent batches of fresh coal seem to have tamed your burning experience.