Date of Version
January 1939
Recommended Citation
Colglazier, Ray, "Operation of Stone Quarries and Crushing Plants" (1939). Purdue Road School. 29.
https://docs.lib.purdue.edu/roadschool/1939/proceedings/29
Start Date
1-24-1939 12:00 AM
COinS
Jan 24th, 12:00 AM
Operation of Stone Quarries and Crushing Plants
