00596cam a22001811  4500008004100000100002300041245005200064250001200116260008100128300003100209440003000240500005300270504004200323650002200365003000100387005001700388040000900405                                        1 aMitchell, David R.00aCoal preparation,cedited by David R. Mitchell.  a2nd ed.  aNew York :bAmerican Institute of Mining and Metallurgical Engineers,c1950.  axi, 830 p.bill. ;c24 cm. 4aThe Seeley W. Mudd series  a"Sponsored by the Seeley W. Mudd Memorial Fund."  aIncludes bibliographical references . 0aCoal preparation.20230123134108.0  cNUST