In Australia there is a seam reported to be 750 meters thick....
Uh, make that maybe 110 meters thick, maybe as much as twice that thick
toward the eastern end. That is the Morwell brown coal (tertiary) near
Victoria. Maybe I was thinking feet? According to a friend who has been
there, the coal in places consists of moderately altered bark, etc. The
coal is surface strip mined, and fed directly into the power station, or
made into briquettes for sale on the retail market.
Art
http://chadwicka.swau.edu