The Encyclopedia Americana: The International Reference Work, Volume 7Americana Corporation, 1955 - Encyclopedias and dictionaries |
From inside the book
Results 1-3 of 78
Page 72
The steel roll itself per- forms a crushing operation breaking up the clay as pressure increases between roll and housing . The double roll crusher performs the same two operations , tearing and crushing . It is con- structed of two ...
The steel roll itself per- forms a crushing operation breaking up the clay as pressure increases between roll and housing . The double roll crusher performs the same two operations , tearing and crushing . It is con- structed of two ...
Page 153
Mule haulage was used most exten- sively and is still used in some small mines , but it has been replaced in large operations , not so much because of improved efficiency as of the limitations of local conditions - low roof , heavy cars ...
Mule haulage was used most exten- sively and is still used in some small mines , but it has been replaced in large operations , not so much because of improved efficiency as of the limitations of local conditions - low roof , heavy cars ...
Page 612
types , it is still an ideal bucket elevator for nominal capacity , for handling material that does not have very large lumps , and for inter- mittent operation . Perfect - Discharge Bucket Elevator . - This uses two strands of chain ...
types , it is still an ideal bucket elevator for nominal capacity , for handling material that does not have very large lumps , and for inter- mittent operation . Perfect - Discharge Bucket Elevator . - This uses two strands of chain ...
What people are saying - Write a review
We haven't found any reviews in the usual places.
Other editions - View all
Common terms and phrases
American army became British called carried cause cent century changes chief Church Civil clay Cleveland coal coast collection College colonies color Colorado comic command commerce continued countries early East effect England English established federal feet forces four France French given History House important increased industry interest internal Island Italy John June known land later less light London manufacturing March means ment miles mining natural North opened operation organized original Panama passed period plants practice present president published Railroad region result River separate served South studied temperature term tion town trade transportation Union United University usually various women York