US2765266A - Bulk density control of coking coal - Google ...
US2765266A US360174A US36017453A US2765266A US 2765266 A US2765266 A US 2765266A US 360174 A US360174 A US 360174A US 36017453 A US36017453 A US 36017453A US 2765266 A US2765266 A US 2765266A Authority US United States Prior art keywords coal bulk density conveyor uniform height Prior art date Legal status …
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