The smallest size selection of coal that seems to be commonly sold is
called "rice coal", but it is still large compared to the actual size of a grain
of rice! What happens to coal particles that really are about the size of
a grain of rice or a pea (roughly 3/16 to 5/16 of an inch across)? I.E., is
there a market for it? I would like to obtain a sample of such coal to try
in a new type of stove.