I see you are in Seward so I asume your coal came from Healy, just like mine, in other words combustable dirt.
I recomend you try and protect it from the weather as it will break down and once it gets small it is hard to burn, not sure why but it probably holds more water in the space between the pieces.
If you keep it out of the rain say in a car port I doubt it will absorb more water it is already over 25% water, see data sheet, http://www.usibelli.com/Coal_data.asp
You can take a fist sized piece of coal put it on an acurate scale and place it in you house and it will loose about 20% of it's wieght in a week, and it will form shrinkage cracks all over it, I doubt you can make it signifigantly heavier without a hose full of water.
Experiments were done to dry the coal but it just absorbed the water back once the heat was removed, treating with diesel when dry was tried but diesel is now expensive.
These experiment were done by Earl Dunkle and are talked about in the book Alaska's Flying Miner
I never actually read the book.
When I hand fed this stuff I would have two coal hods, about three gallons each and as soon as one was empty I would fill it and place them as close to the heat as possible.
If you pile this coal on a fire it will make white smoke, it likes about four cups of coal every 20 minutes, that is a real hassle, so throw a bunch in on a hot fire and if your stove has over fire air you may be able to get the white smoke to burn, or dam near explode, the white smoke is not combustable imediatly but as the fire heats the fresh coal is will be capable of combustion with the addition of air above the fire, in this condition if you open the door to look at your fire it can take a gulp of air and woosh combustion.
With this in mind never completely cover the hot fire with new coal, always allow some flame to exist above the new coal, to help consume the white smoke and keep the people next door happier.
What kind of stove do you have? I see now you have a Harmon TLC 2000, never run one, might be the greatest.
As you burn you will learn. (quote from somone on this forum)