I've just finished my 2nd week burning 1/2 TSC (Reading), and the other half Lehigh stove size. I've been adding Lehigh to a slow burning pot, to speed up the recovery, and layering the TSC nut on top, once the fire is established. Because the temps are still in the 40s, the nut coal doesn't burn as hot, (and I'm noticing, not so well either). Good if you don't want to overheat the rooms, but bad if you need to make any real heat. Today, it's 40° outside, and I began with my Lehigh, after a long night of burning, and got a good burn going before a full shake down. Once the stove was "de-ashed", I tossed in more Lehigh, and it too took off quickly. With the pot "mostly" full, and burning fine, I layered the top with TSC nut, and have waited literally hours
for it to take off, so I can close my primaries and MPD down. I've gone out there a few times, and even "stirred" the pot, to break up the nut blanket that is smothering the Lehigh. The barrel temps are actually lowering, but the thermometer monitoring the lower part of the coal bed, is still hot, (That's where all the Lehigh is.) Here's some pix.
This is the condition of the coal bed, after 2 hrs of a wide open MPD, and also ash pan, and klinker door.
And here is the temp on the barrel. Sorry for the blur.
Like I mentioned above, after hrs of an open MPD and ash pan door. If Lehigh was in there, the stove would've melted to a molten pool of iron after 45 mins.
I've been saving the fines coming from the bottom of the bags, and here is what is in the bag as of now, after a couple weeks.
It sort of resembles small "pea" coal, but beneath is finer. And here (in the hod) is a pic of what came out of my latest TSC Reading bag. From the middle, not the bottom. (A little over exposed, but you get the idea.)
When people tell you , "coal is coal" and there's no difference between manufacturers, from the little bit I've been burning, I'm beginning to see differences. And this year..."TSC Reading is crap". I'm sorry to say, the season is just beginning, and I still have about 30-40 something bags left.