Possible recovery of coal from waste at Illinois mines / by- Cloyde M. Smith and David R. Mitchell
Smith, Cloyde M.
Possible recovery of coal from waste at Illinois mines / by- Cloyde M. Smith and David R. Mitchell - Urbana, Illinois : University of Illinois, Engineering Experiment Station - 44 p. - Bulletin ; no.285 .
Possible recovery of coal from waste at Illinois mines / by- Cloyde M. Smith and David R. Mitchell - Urbana, Illinois : University of Illinois, Engineering Experiment Station - 44 p. - Bulletin ; no.285 .