1 Table of Contents: “...6. Coal -- Synopsis -- The Substance of coal -- Coal types -- Petrography of coal -- The chemical...”

2 “... best to use the tables; it has also been expanded to refer to ores, coal, waste and residues...”

3 “... have been able to draw upon the experiences of those at the "coal face" of deep-sea sampling, expanding...”

4 “... of coal, petroleum, and natural gas being fiercely depleted. Solar energy offers a ubiquitous...”

5 “... efficiently transform natural gas, coal, or biomass into diesel, jet fuel or gasoline to drive our machines...”